{"title":"Vegetables \u0026 Allotment","description":"\u003ch2\u003eFeeding a vegetable plot the organic way\u003c\/h2\u003e\n\u003cp\u003eAn allotment or kitchen garden is a dozen different crops with a dozen different appetites, and no single bag suits all of them equally. Brassicas and leeks want nitrogen and firm limed ground; roots want lean soil and a little potassium; potatoes want a great deal of everything and a slightly acid bed; beans make their own nitrogen and want potassium. The way to feed that without buying a shed full of products is a balanced base plus a few single nutrients to lean the mix one way or the other. That is what this collection is: the two all-round blends, and the single-nutrient inputs to adjust them, with every ingredient listed.\u003c\/p\u003e\n\n\u003ch2\u003eStart with one of two bags\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/products\/organic-fruit-vegetable-fertiliser\"\u003eFruit \u0026amp; Vegetable Fertiliser 4-5-6\u003c\/a\u003e is the vegetable fertiliser for a mixed plot: enough nitrogen for leafy growth, with phosphorus and potassium ahead of it for root, flower and fruit. If you only buy one feed for the allotment, it is this one. \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eOrganic All Purpose Fertiliser 4-4-4\u003c\/a\u003e is the evenly balanced alternative, better where the soil is already rich in potassium or where you are feeding ornamentals from the same bag. \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-4-4-4-fertiliser\"\u003eWhat is 4-4-4 organic fertiliser\u003c\/a\u003e sets out the difference, and the best organic fertiliser for vegetables takes it crop by crop.\u003c\/p\u003e\n\n\u003ch2\u003eThe single nutrients\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/organic-nitrogen-fertiliser\"\u003eOrganic Nitrogen Fertiliser, 13% N\u003c\/a\u003e. Plant-based nitrogen for the hungry leaf crops: brassicas, leeks, sweetcorn, and anything that has stalled and gone pale. \u003ca href=\"\/blogs\/the-dr-forest-blog\/high-nitrogen-feed\"\u003eHigh nitrogen fertiliser: when it helps and when it harms\u003c\/a\u003e is worth reading first.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/organic-alfalfa-meal-pellets-2-5-0-3-2\"\u003eAlfalfa Meal Pellets\u003c\/a\u003e. A gentler nitrogen that also feeds the soil life; good worked in before planting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/sulphate-of-potash\"\u003eSulphate of Potash, 50% K₂O\u003c\/a\u003e. Potassium for beans, onions, roots and anything fruiting, without the chloride of muriate.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/rock-phosphate-fertiliser-uk-31\"\u003eRock Phosphate, 31% P\u003c\/a\u003e. Slow phosphorus and calcium for new beds and root crops; it releases over years rather than weeks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003ca href=\"\/products\/organic-potato-fertiliser\"\u003eOrganic Potato Fertiliser 3-5-8\u003c\/a\u003e. The one crop that earns its own blend.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEach nutrient has its own page with the liquid and granular options together: \u003ca href=\"\/collections\/nitrogen-fertilisers\"\u003enitrogen\u003c\/a\u003e, \u003ca href=\"\/collections\/potash-fertilisers\"\u003epotash and potassium\u003c\/a\u003e, \u003ca href=\"\/collections\/phosphorus-fertilisers\"\u003ephosphorus\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eSeedlings and liquid feeding\u003c\/h2\u003e\n\u003cp\u003e\u003ca href=\"\/products\/organic-liquid-seedling-fertiliser\"\u003eLiquid Seedling Fertiliser\u003c\/a\u003e is a mild root starter for modules and pricked-out plants, when a full-strength feed would do more harm than good. \u003ca href=\"\/products\/organic-liquid-fertiliser-5-2-5\"\u003eOrganic Liquid Fertiliser 5-2-5\u003c\/a\u003e is the balanced liquid for the growing season, for containers and for crops that need a quick lift between granular feeds. The \u003ca href=\"\/pages\/liquid-fertiliser-calculator\"\u003eliquid fertiliser calculator\u003c\/a\u003e works out dilution for whatever can or sprayer you use.\u003c\/p\u003e\n\n\u003ch2\u003eCommon questions\u003c\/h2\u003e\n\u003ch3\u003eWhich is better for vegetables, 4-4-4 or 4-5-6?\u003c\/h3\u003e\n\u003cp\u003eFor fruiting and rooting crops the 4-5-6. For a bed that is mostly leaves, or where you want one feed for veg and borders alike, the 4-4-4. Both are slow-release and neither will scorch when used at the rate on the pack.\u003c\/p\u003e\n\u003ch3\u003eWhen do I feed?\u003c\/h3\u003e\n\u003cp\u003eGranular blends are worked in before sowing or planting and top-dressed once the crop is established. Liquids start once plants are growing away. The rates on each product page are the ones to follow.\u003c\/p\u003e\n\u003ch3\u003eDo I need to lime?\u003c\/h3\u003e\n\u003cp\u003eBrassicas prefer a limed, firm soil; potatoes prefer it slightly acid. Test before you add anything. \u003ca href=\"\/products\/garden-lime\"\u003eGarden Calcium Carbonate\u003c\/a\u003e raises pH gently where it is needed, and \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-increase-or-decrease-your-soil-ph\"\u003ehow to increase or decrease your soil pH\u003c\/a\u003e explains how much.\u003c\/p\u003e\n\u003cp\u003eFor tomatoes and chillies specifically, see \u003ca href=\"\/collections\/tomatoes-edibles\"\u003etomatoes, chillies and peppers\u003c\/a\u003e, and for soft fruit, \u003ca href=\"\/collections\/fruit-trees-soft-fruit\"\u003efruit trees and soft fruit\u003c\/a\u003e; for feeding the soil itself, \u003ca href=\"\/collections\/soil-improver\"\u003esoil conditioners\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"organic-bokashi-bran","title":"Bokashi Bran | Kitchen Waste Activator in a Compostable Bag","description":"\u003c!-- Dr Forest — Bokashi Bran Product Page (v2 — Design System v1.0) --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- Prefix: drf-bk- · 4-tab layout · Pure CSS radio-input tabs + checkbox FAQ. No JavaScript. Shopify-safe. --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; 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flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003c!-- ===== 4-TAB BODY (Overview \/ The Science \/ How to Use \/ FAQ) ===== --\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-bk-tabset\" id=\"drf-bk-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-bk-tabset\" id=\"drf-bk-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-bk-tabset\" id=\"drf-bk-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-bk-tabset\" id=\"drf-bk-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-bk-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-bk-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-bk-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-bk-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-bk-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eBokashi bran: an EM compost activator for kitchen food waste\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eEffective-microorganism culture\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eCompost Activator\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eCompostable Packaging\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eCooked Food, Meat \u0026amp; Dairy\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e1.5 kg \u0026amp; 4.5 kg\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eBokashi bran is wheat bran inoculated with an effective-microorganism culture, sprinkled over kitchen food waste in a sealed bin to ferment it rather than let it rot.\u003c\/strong\u003e The lactic acid bacteria in the bran drop the pH of the waste below 5, so it pickles, and the pickled material breaks down in the soil in a matter of weeks. Dr Forest bokashi bran is made with an effective-microorganism culture of the kind developed by Professor Teruo Higa at the University of the Ryukyus in Okinawa, and comes in compostable paper bags with no plastic anywhere.\u003c\/p\u003e\n\u003cp\u003eIt takes everything a conventional compost heap cannot: cooked food, meat, fish, dairy, bread, rice and pasta, alongside the usual peelings. The fermentation stage happens in the bin in your kitchen, so it carries on through winter when an outdoor heap has stopped. Available in 1.5 kg and 4.5 kg bags, posted from our workshop in Stockport, Greater Manchester to anywhere in the UK.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e2–3 wk\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSealed fermentation\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e2–4 wk\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eBuried to soil\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eWheat\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eBran base (contains wheat)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eZero\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePlastic packaging\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat is bokashi bran used for?\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposting all kitchen food waste\u003c\/strong\u003e — cooked leftovers, meat, fish, cheese and bread go in the bokashi bin; a conventional heap cannot take them without smelling and drawing vermin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComposting in a flat or a house without a garden\u003c\/strong\u003e — the fermentation happens in a sealed bin the size of a kitchen bin; the finished material goes into a large planter, an allotment bed or a community garden\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBokashi tea for plants\u003c\/strong\u003e — the liquid drained from the bin is a concentrated, acidic microbial liquid that is diluted and used as a soil drench, or poured neat down the drain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeeping food waste out of landfill\u003c\/strong\u003e — food waste in landfill is one of the largest man-made sources of methane; bokashi keeps it at home and puts it in the ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilding soil humus and biology\u003c\/strong\u003e — burying the fermented material feeds earthworms and the soil food web, and trench-fed beds suit hungry crops the following season\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWinter composting\u003c\/strong\u003e — fermentation runs at room temperature all year, so you keep going in January when the outdoor heap is cold and idle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy bokashi rather than a conventional compost heap?\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eBokashi bran fermentation\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTakes cooked food, meat, fish, dairy and bread as well as raw peelings\u003c\/li\u003e\n\u003cli\u003eSealed bin, so no flies, and nothing for rats to get at\u003c\/li\u003e\n\u003cli\u003eRuns at room temperature all year, in the kitchen\u003c\/li\u003e\n\u003cli\u003eFour to seven weeks from full bin to soil (2–3 weeks sealed, 2–4 weeks buried)\u003c\/li\u003e\n\u003cli\u003eYields bokashi tea as a by-product\u003c\/li\u003e\n\u003cli\u003eLactic fermentation holds nutrients in the material\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eConventional aerobic compost heap\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRaw vegetable waste and garden waste only; cooked food, meat and dairy cause smells and vermin\u003c\/li\u003e\n\u003cli\u003eNeeds outdoor space and a good six to twelve months in a typical UK garden\u003c\/li\u003e\n\u003cli\u003eSlows to a standstill in winter\u003c\/li\u003e\n\u003cli\u003eTurning the heap speeds it up but drives off nitrogen as ammonia\u003c\/li\u003e\n\u003cli\u003eStill the right tool for grass clippings, prunings and bulk garden waste, so the two work well together\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003cp\u003eDr Forest is a small-batch fertiliser maker in Stockport, Greater Manchester. This bran is packed here by hand in compostable paper bags, and the empty bag can go in your food waste caddy or straight into the bokashi bin. If you are new to the method, start with our guide \u003ca href=\"\/blogs\/the-dr-forest-blog\/bokashi-bran-what-it-is-how-to-use-it\"\u003eBokashi bran: what it is, and how to use it to compost\u003c\/a\u003e. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════ TAB 2 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-bk-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eThe science of bokashi: how a lactic ferment works\u003c\/h2\u003e\n\u003ch3\u003eWhat bokashi bran is made of\u003c\/h3\u003e\n\u003cp\u003eBokashi bran is wheat bran soaked in an effective-microorganism culture and molasses, fermented, and dried. The molasses feeds the culture while it colonises the bran; drying sends the organisms dormant so the bran keeps in the bag. In a sealed bin of wet food waste they wake up, eat the sugars, and produce lactic acid.\u003c\/p\u003e\n\u003cp\u003eThe effective-microorganism culture is the one Professor Teruo Higa developed at the University of the Ryukyus in the 1980s. As formulated, it combines lactic acid bacteria, yeasts and photosynthetic bacteria, all of them organisms already in use in food fermentation [1]. The field evidence for EM as a soil or crop treatment is weak: in a four-year Swiss trial, living EM performed no better than the same preparation sterilised, and the small yield gains came from the bokashi substrate, not the organisms [2]. In the one job that matters here, fermenting food waste in a bucket, it is the lactic acid bacteria doing the work [3]. We sell the bran for the bucket. Our \u003ca href=\"\/products\/effective-microorganisms-em1\"\u003eliquid effective-microorganism culture\u003c\/a\u003e is the same organisms in liquid form, for anyone who wants to make their own bran.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eWhat happens in the bin\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eStage\u003c\/th\u003e\n\u003cth\u003eWhat is going on\u003c\/th\u003e\n\u003cth\u003eSign\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirst days\u003c\/td\u003e\n\u003ctd\u003eLactic acid bacteria multiply on sugars in the waste; oxygen in trapped air is used up\u003c\/td\u003e\n\u003ctd\u003eFaint sweet smell when opened\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWhile the bin fills\u003c\/td\u003e\n\u003ctd\u003epH falls to roughly 3.7–4.9 and the liquid turns acidic\u003c\/td\u003e\n\u003ctd\u003ePickled, cider-vinegar smell; liquid collects in the base\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeeks 2–3 sealed\u003c\/td\u003e\n\u003ctd\u003eFermentation completes; material is stable and preserved\u003c\/td\u003e\n\u003ctd\u003eWhite yeast bloom on the surface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeeks 2–4 buried\u003c\/td\u003e\n\u003ctd\u003eSoil organisms finish the job; pH returns to normal as the material breaks down\u003c\/td\u003e\n\u003ctd\u003eMaterial disappears into the soil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe pH figures are from a 2026 culture-independent pilot study of six household bokashi bins in Finland. Lactic acid bacteria dominated the actively fermenting bins, with \u003cem\u003eLentilactobacillus\u003c\/em\u003e alone at 20–60% of the community in five of the six households; leachate pH sat between 3.7 and 4.9, and organisms flagged as potential pathogens averaged 0.2% of reads [3]. That is the whole trick: a lactic ferment, the same as sauerkraut or silage, applied to the contents of your kitchen caddy.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eThe bin pickles your food waste. The soil composts it afterwards.\u003c\/div\u003e\n\u003ch3\u003eMechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eAcidification stops putrefaction\u003c\/h4\u003e\n\u003cp\u003eRotting is what happens when food waste sits without oxygen and the wrong bacteria win. Lactic acid bacteria win instead when they are given a head start, a food source and no air, which is what the bran, the molasses and the sealed bin provide. In the Finnish bins, running at pH 3.7–4.9, potential pathogens were a fraction of a percent of the community [3]. This is why a working bin smells of vinegar rather than the bottom of a wheelie bin.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eNutrients stay in the material\u003c\/h4\u003e\n\u003cp\u003eAn aerobic compost heap loses nitrogen to the air as ammonia, and turning it makes that worse: a systematic review of solid-waste management found turned composting raised ammonia emissions by around 54% compared with simple storage [6]. A lactic ferment behaves differently. In a benchtop trial on brewery spent grain, bokashi fermentation cut ammonia lost from the substrate by 84–86% and all but eliminated nitrous oxide [7]. Different feedstock, same chemistry: more of the nitrogen is still in the material when you bury it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eFast breakdown once buried\u003c\/h4\u003e\n\u003cp\u003eFermentation partly digests the material before it reaches the soil, so earthworms, fungi and soil bacteria finish it quickly. A University of Vermont trial comparing fermented food waste with thermophilic compost and vermicompost in spinach beds found the bokashi plots gave the highest marketable yield at the second cutting and the highest soil nitrate by the end of the experiment, with higher leaf nitrogen, potassium, manganese and zinc [4]. One trial, one crop, so treat it as encouraging rather than settled.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eFood waste out of landfill\u003c\/h4\u003e\n\u003cp\u003eLandfill gas is one of the largest human sources of methane, largely because of food waste; a 2006 modelling study put landfill at around 8% of global anthropogenic methane emissions and showed that diverting food waste to composting or digestion cuts that share [5]. A bokashi bin diverts every scrap your household produces, and the fermented output ends up feeding the soil in your own beds rather than in a lorry.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eWhat the organisms do not do\u003c\/h4\u003e\n\u003cp\u003eFermented bokashi is a good soil amendment because of what it is made of. The evidence that the EM organisms themselves do anything in the soil is thin. In the Swiss field trial, sterilised bokashi performed the same as live bokashi [2], and the Finnish study did not detect photosynthetic bacteria in any of the activated starter brans it sampled [3]. Treat the bran as a fermentation starter. The soil benefit comes from the food waste it lets you keep.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003cp\u003eFor how the finished material behaves once it is in the ground, and how it fits alongside a no-dig bed, read \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-use-bokashi-bran-in-soil\"\u003eHow to use bokashi bran in your soil\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eHiga, T. \u0026amp; Parr, J.F. (1994). Beneficial and Effective Microorganisms for a Sustainable Agriculture and Environment. \u003cem\u003eInternational Nature Farming Research Center\u003c\/em\u003e, Atami, Japan.\u003c\/li\u003e\n\u003cli\u003eMayer, J., Scheid, S., Widmer, F., Fliessbach, A. \u0026amp; Oberholzer, H.-R. (2010). How effective are 'Effective microorganisms (EM)'? Results from a field study in temperate climate. \u003cem\u003eApplied Soil Ecology\u003c\/em\u003e, 46(2), 230–239.\u003c\/li\u003e\n\u003cli\u003eKujala, K. \u0026amp; Kinnunen, V. (2026). Lactic acid bacteria dominate urban Bokashi: a participatory, culture-independent pilot study of microbial diversity and functional potential in household-scale food waste fermentation. \u003cem\u003eFEMS Microbes\u003c\/em\u003e, 7, xtag018.\u003c\/li\u003e\n\u003cli\u003eChristel, D.M. (2017). The use of bokashi as a soil fertility amendment in organic spinach cultivation. MSc thesis, \u003cem\u003eUniversity of Vermont\u003c\/em\u003e, Graduate College Dissertations and Theses 678.\u003c\/li\u003e\n\u003cli\u003eAdhikari, B.K., Barrington, S. \u0026amp; Martinez, J. (2006). Predicted growth of world urban food waste and methane production. \u003cem\u003eWaste Management \u0026amp; Research\u003c\/em\u003e, 24(5), 421–433.\u003c\/li\u003e\n\u003cli\u003ePardo, G., Moral, R., Aguilera, E. \u0026amp; Del Prado, A. (2015). Gaseous emissions from management of solid waste: a systematic review. \u003cem\u003eGlobal Change Biology\u003c\/em\u003e, 21(4), 1313–1327.\u003c\/li\u003e\n\u003cli\u003eGebiola, M., Rodriguez, M.V., Garcia, A., Garnica, A., Tomberlin, J.K., Hopkins, F.M. \u0026amp; Mauck, K.E. (2023). Bokashi fermentation of brewery's spent grains positively affects larval performance of the black soldier fly \u003cem\u003eHermetia illucens\u003c\/em\u003e while reducing gaseous nitrogen losses. \u003cem\u003eWaste Management\u003c\/em\u003e, 171, 411–420.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-bk-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use bokashi bran: step-by-step kitchen composting guide\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWhat you need to get started\u003c\/span\u003e\n\u003cp\u003eA bokashi bin (any airtight container with a tap at the base for draining liquid; dedicated bokashi bins are widely available), this bokashi bran, and your kitchen food waste. That is all. No garden is needed for the fermentation stage; it can be done in a flat, apartment or any kitchen. You will need access to soil (garden bed, allotment, large planter or community garden) for the burial stage, or you can add the fermented material to a conventional compost bin.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eThe one rule\u003c\/span\u003e\n\u003cp\u003e\u003cstrong\u003eKeep the air out and the liquid drained.\u003c\/strong\u003e Press each layer down, seal the lid every time, and drain the tap every 2–3 days. Nearly every failed bin comes down to one of those three.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eStep-by-step bokashi composting\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdd a layer of food waste to your bokashi bin.\u003c\/strong\u003e Cut large pieces into smaller chunks to speed fermentation. You can add all kitchen waste: vegetable peelings, fruit scraps, cooked food, meat, fish, dairy, bread, rice, pasta, tea bags, coffee grounds, essentially anything that was once food. Avoid large bones, excessive liquid and non-food items.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSprinkle a generous handful of bokashi bran over the layer.\u003c\/strong\u003e Aim for a thin but complete coverage, roughly 1–2 tablespoons per kilo of food waste. Use more bran for meat, fish and dairy; less for fruit and vegetable scraps. The bran introduces the EM organisms that drive the fermentation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePress down firmly and seal the lid.\u003c\/strong\u003e Compress the food waste to remove air pockets. The fermentation is anaerobic (without oxygen), so minimising trapped air improves the process. Close the lid tightly. Open only to add more waste.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRepeat layers until the bin is full.\u003c\/strong\u003e Continue adding food waste and bran in layers each day. Press down each time. Drain the bokashi tea from the tap every 2–3 days (use it diluted on plants or neat down drains).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeal and leave for 2–3 weeks.\u003c\/strong\u003e Once the bin is full, seal it and leave undisturbed at room temperature for 2–3 weeks. The fermentation happens inside the sealed bin; you do not need to turn, stir or manage it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBury the fermented material in your garden.\u003c\/strong\u003e Dig a trench or hole 20–30 cm deep in a garden bed, empty the fermented bokashi into it, and cover with the excavated soil. Within 2–4 weeks the material will have decomposed completely into the surrounding soil. Alternatively, add the fermented material to a traditional compost bin, where it will accelerate the composting process.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eApplication rates and tips\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBran per layer of food waste\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–2 tablespoons per kilo of food waste | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every time you add food waste\u003c\/div\u003e\n\u003cp\u003eUse a generous sprinkle; it is better to use slightly too much bran than too little. Meat, fish and dairy benefit from a heavier application. Fruit and vegetable scraps need less. If in doubt, add more. The bran is the inoculant that ensures fermentation dominates over putrefaction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBokashi tea as a plant feed\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Dilute approximately 1:100 with water | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Drain every 2–3 days; use diluted on plants immediately\u003c\/div\u003e\n\u003cp\u003eThe liquid that collects in the base of the bokashi bin is a concentrated microbial tea. Dilute approximately one capful or tablespoon per litre of water and use as a soil drench for plants in pots, containers and garden beds. Use within 24 hours of draining; it loses potency quickly. Do not store.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBokashi tea as a drain cleaner\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Undiluted, poured neat down the drain | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Weekly or as needed\u003c\/div\u003e\n\u003cp\u003ePour the undiluted bokashi tea directly down kitchen and bathroom drains. The acidic, microbially active liquid breaks down build-up in pipes: grease, food residue and soap scum. This is a practical use for any excess tea you do not need for plants.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBurying fermented bokashi in garden beds\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e One bin-load per 1–2 m of trench, buried 20–30 cm deep | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Each time a bin completes fermentation\u003c\/div\u003e\n\u003cp\u003eDig a trench or series of holes, empty the fermented material, and cover immediately with at least 15 cm of soil. The fermented material is acidic (pH ~3.5–4.0) and should not come into direct contact with plant roots until it has decomposed; allow 2–4 weeks before planting directly into the burial site. Rotate burial locations around the garden to spread the benefit evenly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eAdding fermented bokashi to a compost bin\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e One bin-load mixed into the compost heap | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Each time a bin completes fermentation\u003c\/div\u003e\n\u003cp\u003eIf you have a conventional compost bin, the fermented bokashi material can be added directly to it instead of burying. The pre-fermented material accelerates the composting process and introduces beneficial microorganisms. Mix it into the centre of the heap and cover with existing compost material.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eSigns of successful fermentation\u003c\/span\u003e\n\u003cp\u003eA properly fermented bokashi bin has a sweet-sour, pickled smell, similar to cider vinegar or silage. You may see white mould on the surface; this is normal and indicates healthy fermentation (it is a beneficial yeast colony, not putrefaction). If the bin smells putrid or rotten, or if you see blue, green or black mould, the fermentation has failed, usually because the lid was not sealed properly, not enough bran was used, or too much liquid was left in the bin without draining.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003eBokashi is a complementary system, not a replacement for other soil-building practices. Combine with regular additions of \u003ca href=\"\/products\/slow-release-humic-acid\"\u003eSlow Release Humic Acid\u003c\/a\u003e to build soil CEC and humus, and use \u003ca href=\"\/products\/un-sulphured-sugar-cane-molasses\"\u003eUnsulphured Molasses\u003c\/a\u003e if you are activating your own bran from \u003ca href=\"\/products\/effective-microorganisms-em1\"\u003eliquid effective-microorganism culture\u003c\/a\u003e. For a ready-fermented bran to work into beds and pots directly, without the bucket stage, see \u003ca href=\"\/products\/bokashi-soil-conditioner\"\u003eGrow-Kashi Bokashi\u003c\/a\u003e. Use the bokashi burial sites as the beds for nutrient-hungry crops like tomatoes, courgettes and brassicas; the decomposed material provides a rich reserve of humus and microbial activity. For container growers without garden space, bury small amounts of fermented bokashi in the bottom third of large pots when repotting, and cover with 15 cm of potting soil before planting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage\u003c\/span\u003e\n\u003cp\u003eKeep the bag sealed in a cool, dry place out of direct sunlight. The organisms stay dormant while the bran is dry and begin to activate if it takes on moisture. Once opened, reseal tightly or decant into an airtight tub. Properly stored, the bran remains active for at least 12 months. A strong sour smell from the bag means it has started to ferment in storage; it is still usable, but use it promptly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════ TAB 4 — FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-bk-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions about bokashi bran\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq1\"\u003eWhat is bokashi bran and what is it made of?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eBokashi bran is wheat bran that has been fermented with an effective-microorganism culture and molasses, then dried so the organisms go dormant. Sprinkled over food waste in a sealed bin, the lactic acid bacteria wake up and pickle the waste. It is a compost activator for a bokashi bin; the plant food is the fermented waste you bury afterwards.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq2\"\u003eHow much bokashi bran do I use?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eSprinkle 1–2 tablespoons of bran per kilo of food waste every time you add to the bin. Use more over meat, fish and dairy and less over fruit and vegetable peelings. If in doubt, add more; too little bran is the commonest reason a bin goes wrong. A 1.5 kg bag lasts a typical household bin for a good few fills.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq3\"\u003eWhat can I put in a bokashi bin?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eAll kitchen food waste: vegetable peelings, fruit scraps, cooked food, meat, fish, dairy, cheese, bread, rice, pasta, tea bags, coffee grounds and egg shells. This is the main advantage over a conventional heap, which cannot take cooked food, meat or dairy without smelling and drawing vermin. Leave out large bones, which take too long, excess liquid (drain soups and sauces first), and anything that is not food. Small amounts of paper napkin and kitchen roll are fine.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq4\"\u003eDoes a bokashi bin smell?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eWith the lid sealed, no. When you open it to add waste there is a mild sweet-sour smell, like cider vinegar or pickled vegetables. That is the lactic acid bacteria at work, holding the pH low enough that the putrefying organisms cannot get going. If the bin smells rotten, the ferment has failed, almost always because the lid was not sealed, too little bran went in, or the liquid was not drained often enough.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq5\"\u003eWhat is bokashi tea and what do I do with it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eBokashi tea, also called bokashi liquid or bokashi juice, is the acidic liquid that drains into the base of the bin during fermentation. Diluted at roughly 1:100 with water (one tablespoon per litre), it is used as a soil drench for plants in pots and in garden beds. Neat, it goes down the kitchen or bathroom drain, where the acidic, microbially active liquid breaks down grease and build-up. Use it within 24 hours of draining; it does not keep.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq6\"\u003eCan I use bokashi in a flat or apartment without a garden?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. The fermentation stage happens in a sealed bin in the kitchen, no bigger than a normal kitchen bin. You do need somewhere to bury the fermented material afterwards: a large planter on a balcony, a community garden, an allotment or a friend's bed all work. Some councils accept fermented bokashi in food waste collections; check your local guidance. It can also go into a wormery, a little at a time.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq7\"\u003eHow long does the whole process take, from scraps to soil?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eTypically 6–8 weeks. Filling the bin takes as long as your household takes to produce the waste, usually 1–3 weeks. The sealed ferment after that takes 2–3 weeks. Burial and breakdown in the soil takes a further 2–4 weeks depending on soil temperature and biology; in warm summer soil it can be gone in a fortnight.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq8\"\u003eIs this made with effective microorganisms?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. The bran is fermented with an effective-microorganism culture, the approach developed by Professor Teruo Higa. If you would rather make your own bran, we sell the \u003ca href=\"\/products\/effective-microorganisms-em1\"\u003eliquid culture\u003c\/a\u003e and \u003ca href=\"\/products\/un-sulphured-sugar-cane-molasses\"\u003eunsulphured molasses\u003c\/a\u003e separately; most people find the ready-made bran quicker and more reliable.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq9\"\u003eHow long does bokashi bran last, and how should I store it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eSealed and kept cool, dry and out of the sun, it stays active for at least 12 months. The organisms are dormant while the bran is dry and start to wake up if it gets damp, so reseal the bag or decant into an airtight tub after opening. If it smells strongly sour before you have used it, it has begun fermenting in the bag; it still works, but use it soon.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bk-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bk-faq10\"\u003eWhere can I buy bokashi bran in the UK?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eHere. We pack it by hand in Stockport, Greater Manchester, in 1.5 kg and 4.5 kg compostable paper bags, and post it to any UK address; delivery terms are on our \u003ca href=\"\/policies\/shipping-policy\"\u003eshipping page\u003c\/a\u003e. For where bokashi sits alongside other soil inputs, see our post on \u003ca href=\"\/blogs\/the-dr-forest-blog\/organic-dry-amendments\"\u003edry soil amendments\u003c\/a\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-bk-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-bk-faq-paa1\" class=\"drf-faq-q\"\u003eCan you add bokashi directly to soil?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes, once it has fermented, and that's the usual way to finish it. After two to three weeks sealed in the bin, dig a trench or hole 20–30 cm deep in a bed, empty the fermented waste in, mix a little soil through and cover it with at least 15 cm of soil. It is acidic at first (around pH 3.5–4), so keep it out of direct contact with plant roots; within two to four weeks it breaks down into the surrounding soil. The bran itself is the starter for the bin, not a soil feed on its own. More detail in \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-use-bokashi-bran-in-soil\"\u003ehow to use bokashi bran in your soil\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-bk-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-bk-faq-paa2\" class=\"drf-faq-q\"\u003eCan compostable caddy liners go in the bokashi bin?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. Compostable bags, including compostable food caddy liners, break down in bokashi along with the food waste, so you can tip the liner in with the scraps. Our own bag is compostable paper with no plastic, so when it's empty it can go in your food waste caddy or straight into the bin.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-bk-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-bk-faq-paa3\" class=\"drf-faq-q\"\u003eDoes bokashi bran contain wheat?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. It's made from wheat bran, so it contains wheat. Keep that in mind if anyone in the house has a wheat allergy, and wash your hands after sprinkling it.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ===== END 4-TAB BODY ===== --\u003e","brand":"Dr Forest","offers":[{"title":"1.5kg","offer_id":44586005266619,"sku":"DF-BOKASHI-1.5","price":14.5,"currency_code":"GBP","in_stock":true},{"title":"4.5kg","offer_id":44586005299387,"sku":"DF-BOKASHI-4.5","price":34.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/dr-higas-bokashi-bran-100-compostable-packaging-two-beige-paper-432.webp?v=1785512768"},{"product_id":"micronized-volcanic-rock-dust","title":"Micronised Volcanic Rock Dust","description":"\u003c!-- Dr Forest — Micronised Volcanic Rock Dust Product Page (v2 — Design System v1.0) --\u003e\n\u003c!-- Prefix: drf-vr- · 4-tab layout · Pure CSS radio-input tabs + checkbox FAQ. No JavaScript. Shopify-safe. --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; font-weight: 600; font-size: 0.85em; letter-spacing: 0.2em; text-transform: uppercase; color: var(--drf-muted); margin: 1.2em 0 0.3em; }\n  .drf-wrap p { margin-bottom: 0.9em; }\n  .drf-wrap ul { padding-left: 1.2em; margin-bottom: 0.9em; }\n  .drf-wrap ul li { margin-bottom: 0.35em; }\n  .drf-wrap strong { font-weight: 500; color: var(--drf-grn); }\n  .drf-wrap em { font-style: italic; color: var(--drf-muted); }\n  .drf-wrap a { color: var(--drf-grn); text-decoration: underline; text-underline-offset: 2px; }\n  .drf-eyebrow { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--drf-gold); display: block; margin-bottom: 0.4em; }\n\n  \/* ── BADGES (hardcoded hex for legacy compatibility) ── *\/\n  .drf-badge-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 7px; margin: 0 0 12px; }\n  .drf-badge { padding: 9px 12px; font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; display: flex; align-items: center; justify-content: center; text-align: center; min-height: 36px; line-height: 1.3; }\n  .drf-badge-green { background: #eaf4ea; color: #2d6a2d; border: 1px solid #c0d8b0; }\n  .drf-badge-gold  { background: #fdf6e3; color: #8b6914; border: 1px solid #e0cc80; }\n  .drf-badge-dark  { background: var(--drf-grn-dark); color: #d4e4c8; border: 1px solid #2d6a2d; }\n\n  \/* ── STATS (white cards, gold top border on the grid, grid-line trick) ── *\/\n  .drf-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--drf-border); border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); margin: 1.2em 0; max-width: 100%; }\n  .drf-stat { background: var(--drf-white); padding: 0.7em 0.5em; text-align: center; }\n  .drf-stat-number { font-family: 'Cormorant Garamond', serif; font-size: 1.45em; font-weight: 400; color: var(--drf-grn); line-height: 1.1; display: block; }\n  .drf-stat-label { font-size: 0.62em; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--drf-gold); display: block; margin-top: 0.3em; }\n\n  \/* ── TABS (font-size: 0.72em for 5-tab, 0.82em for 4-tab) ── *\/\n  .drf-tabs-wrap { max-width: 100%; overflow: hidden; }\n  .drf-tabs-wrap input[type=\"radio\"] { display: none; }\n  .drf-tab-labels { display: flex; align-items: stretch; border-bottom: 2px solid var(--drf-border); margin-bottom: 1.2em; }\n  .drf-tab-labels label { flex: 1 1 0; padding: 0.75em 0.4em; font-size: 0.82em; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: #8b6914; background: var(--drf-gold-light); cursor: pointer; text-align: center; display: flex; align-items: center; justify-content: center; border-bottom: 3px solid var(--drf-gold); margin-bottom: -2px; transition: all 0.15s; }\n  .drf-tab-labels label:hover { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); }\n  .drf-panel { display: none; }\n  #drf-vr-tab1:checked ~ .drf-tab-labels label[for=\"drf-vr-tab1\"],\n  #drf-vr-tab2:checked ~ .drf-tab-labels label[for=\"drf-vr-tab2\"],\n  #drf-vr-tab3:checked ~ .drf-tab-labels label[for=\"drf-vr-tab3\"],\n  #drf-vr-tab4:checked ~ .drf-tab-labels label[for=\"drf-vr-tab4\"],\n  #drf-vr-tab5:checked ~ .drf-tab-labels label[for=\"drf-vr-tab5\"] { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 700; }\n  #drf-vr-tab1:checked ~ .drf-panels #drf-vr-panel1,\n  #drf-vr-tab2:checked ~ .drf-panels #drf-vr-panel2,\n  #drf-vr-tab3:checked ~ .drf-panels #drf-vr-panel3,\n  #drf-vr-tab4:checked ~ .drf-panels #drf-vr-panel4,\n  #drf-vr-tab5:checked ~ .drf-panels #drf-vr-panel5 { display: block; }\n\n  \/* ── CALLOUTS (square; light \/ gold \/ dark) ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); color: var(--drf-cream); border-left-color: var(--drf-gold); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout-dark a { color: var(--drf-cream); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n\n  \/* ── PULL QUOTE ── *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: 1.4em; color: var(--drf-grn); text-align: center; padding: 1.4em 1em; margin: 1.8em auto; max-width: 80%; line-height: 1.5; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); }\n\n  \/* ── INGREDIENT CARDS (5-tab) ── *\/\n  .drf-ing { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-white); }\n  .drf-ing-head { display: flex; align-items: baseline; justify-content: space-between; }\n  .drf-ing-num { font-family: 'Cormorant Garamond', serif; font-size: 1.6em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-ing-pct { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--drf-gold); }\n  .drf-ing h4 { margin: 0.2em 0 0.3em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-ing p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── MECHANISM CARDS ── *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); font-weight: 600; }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate p:last-child { margin-bottom: 0; }\n  .drf-rate ul { font-size: 0.92em; color: var(--drf-muted); margin: 0.4em 0 0; }\n  .drf-rate ul li { margin-bottom: 0.25em; }\n\n  \/* ── STEPS (square block numbers) ── *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.9em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST (1px hairline borders, alternating gold \/ green) ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* ── COMPARISON BOXES (stack vertically) ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\n\n\u003c!-- ===== 4-TAB BODY (Overview \/ The Science \/ How to Use \/ FAQ) ===== --\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-vr-tabset\" id=\"drf-vr-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-vr-tabset\" id=\"drf-vr-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-vr-tabset\" id=\"drf-vr-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-vr-tabset\" id=\"drf-vr-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-vr-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-vr-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-vr-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-vr-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-vr-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eMicronised volcanic rock dust: fine volcanic rock powder for beds, pots and compost tea\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eMicronised powder\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e48% silica\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eCompost tea ready\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSingle ingredient · mined\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eMicronised volcanic rock dust is finely ground volcanic silicate rock that weathers in moist soil to release silicon and trace minerals, and raises the pH of acid soil as it does so.\u003c\/strong\u003e Grinding the rock to a fine powder gives soil water far more surface to work on than a granule, so the same weight of rock reacts sooner. This is the fast format of the pair Dr Forest sells: a zeolite-bearing volcanic silicate, 48% silica, pH 11, milled fine enough to stay suspended in an aerated compost tea.\u003c\/p\u003e\n\u003cp\u003eIt is a soil conditioner, not a fertiliser. There is no useful nitrogen in it and it will not replace your feed. What it does is put back the slow-release minerals that decades of cropping and peat-free compost leave short, and it does it in a form that gets going within a single season. Use it in potting mixes, rake it into beds at planting, dust it through the compost heap, or add it to a tea brew. For lawns and large areas where dust is a nuisance, the \u003ca href=\"\/products\/organic-granulated-volcanic-rock-minerals-basalt-soil-conditioner\"\u003egranulated rock dust\u003c\/a\u003e is the easier product to spread.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e48%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSilica\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003epH 11\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eRaises acid soil\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e1–2 g\/L\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCompost tea rate\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e100 g\/m²\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eBed maintenance\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat micronised rock dust is used for in the garden\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompost tea mineral enrichment\u003c\/strong\u003e — the powder stays in suspension in an aerated brew, so a trace-mineral drench goes on with the microbes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotting mixes\u003c\/strong\u003e — 5 g per litre at potting; fine particles weather within the season, which granules in a pot do not\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemineralising beds\u003c\/strong\u003e — raked into the top 5 cm at 100 g\/m², or worked deeper at 200–300 g\/m² on new or tired ground\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA gentler lime alternative\u003c\/strong\u003e — at pH 11 it lifts acid soil gradually, and brings silica and trace minerals that lime does not\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilicon supply\u003c\/strong\u003e — silicon deposited in stems and leaves gives structurally stronger plants that hold up better under drought and heavy fruit loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompost heap activation\u003c\/strong\u003e — a dusting between layers, where heat and microbial acids weather the rock faster than open soil\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCarbon capture\u003c\/strong\u003e — silicate weathering ties up dissolved CO₂ as bicarbonate; a small contribution per garden, but a measured one\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMicronised powder or granulated rock dust?\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eMicronised volcanic rock powder (this product)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFine powder with the most surface area per gram, so it weathers first\u003c\/li\u003e\n\u003cli\u003eSuspends in water: the only format that works in compost tea or a drench\u003c\/li\u003e\n\u003cli\u003eThe right choice for pots, potting mixes and one-season results\u003c\/li\u003e\n\u003cli\u003eRaises pH usefully at 200–400 g\/m²\u003c\/li\u003e\n\u003cli\u003eDusty. Apply on still days, or to moist soil\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eDr Forest granulated volcanic rock dust\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCoarser grains that release over months to years\u003c\/li\u003e\n\u003cli\u003eSpreads cleanly across lawns and large beds without dust\u003c\/li\u003e\n\u003cli\u003eBuilds a mineral reserve that stays in the soil for years\u003c\/li\u003e\n\u003cli\u003eWill not suspend in liquid, so no use in tea\u003c\/li\u003e\n\u003cli\u003eMost people end up using both: powder for the season in hand, granules for the years after\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eSmall-batch in Stockport\u003c\/span\u003e\n\u003cp\u003eA single mined ingredient, milled fine, weighed out and packed by hand in small batches in Stockport, Greater Manchester. Vegan and free of animal by-products by nature; nothing added. Safe to use around children, pets, bees and wildlife once it is in the soil. If you want the longer story on what rock dust can and cannot do, read \u003ca href=\"\/blogs\/the-dr-forest-blog\/volcanic-rock-dust-guide\"\u003eHow volcanic rock dust works\u003c\/a\u003e. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 2 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-vr-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eWhy this powder weathers faster\u003c\/h2\u003e\n\u003ch3\u003eWhat is in this micronised powder\u003c\/h3\u003e\n\u003cp\u003eThis rock is a volcanic silicate with zeolite minerals intact: 48% silica by analysis, pH 11 in water. Milled to a fine powder, it presents a large reactive surface to soil moisture. It does not dissolve like a soluble feed; it weathers. Water and the weak acids from roots and microbes free silicon, calcium, magnesium, potassium and trace elements slowly, along with bicarbonate that buffers acidity.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eProperty\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003cth\u003eWhat it means in the garden\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilica (SiO₂)\u003c\/td\u003e\n\u003ctd\u003e48%\u003c\/td\u003e\n\u003ctd\u003eWeathers to silicic acid, the only form plants can take up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH (dry powder)\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003eRaises acid soil gradually; not a concern at compost-tea rates\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFormat\u003c\/td\u003e\n\u003ctd\u003eMicronised powder\u003c\/td\u003e\n\u003ctd\u003eStays suspended in aerated liquid; weathers within a season\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMineral class\u003c\/td\u003e\n\u003ctd\u003eZeolite-bearing volcanic silicate\u003c\/td\u003e\n\u003ctd\u003eCation exchange and water holding alongside mineral release\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eFiner grind means a response this season in pots, beds and compost tea — that is the SKU job. For the full evidence on silicon, yield trials, liming and carbon (Kelland, Skov, Beerling and the rest), read \u003ca href=\"\/blogs\/the-dr-forest-blog\/volcanic-rock-dust-guide\"\u003eHow volcanic rock dust works\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-vr-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use micronised volcanic rock dust: compost tea, soil rates and pH correction\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eDust precaution\u003c\/span\u003e\n\u003cp\u003eThe micronised powder is very fine and will become airborne in dry, windy conditions. Apply on calm days or when soil is moist. Wear a dust mask when handling in enclosed spaces such as polytunnels or glasshouses. Outdoors in normal conditions no mask is required for typical garden quantities.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eA soil conditioner, not a fertiliser\u003c\/span\u003e\n\u003cp\u003eRock dust supplies minerals; \u003cstrong\u003eit does not replace nitrogen or fast-acting nutrition\u003c\/strong\u003e. Run it alongside a base feed such as \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eOrganic All Purpose Fertiliser 4-4-4\u003c\/a\u003e or a crop-specific blend, and give it a season. Even the fine powder works by weathering, not instant solubility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eMethod 1: compost tea mineral enrichment\u003c\/h3\u003e\n\u003cp\u003eAdding the powder to an actively aerated compost tea brew introduces a broad trace-mineral spectrum alongside the microbial content of the tea. The fine particles suspend in the aerated liquid and the minerals are partially chelated by the fulvic and humic acids produced during brewing, which makes them more readily plant-available.\u003c\/p\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare your compost tea as normal.\u003c\/strong\u003e Fill your brew vessel with dechlorinated water, add compost or worm castings in a mesh bag, and start your air pump and airstone. Begin aeration before adding the rock dust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdd the powder at 1–2 g per litre of brew volume.\u003c\/strong\u003e For a 20-litre bucket, add 20–40 g. The agitation from the airstone keeps the fine particles in suspension throughout the brew.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrew for the normal period, 24–48 hours.\u003c\/strong\u003e Keep the air pump running throughout. The rock dust remains suspended during active aeration and minerals are progressively chelated by the organic acids produced during the brew.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply immediately after brewing.\u003c\/strong\u003e Use within 4 hours of switching off the pump. Stir well before applying to redistribute any settled particles. Apply as a soil drench or foliar spray (filter through 200 micron mesh for fine spray nozzles).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eCompost tea rate reference\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–2 g per litre of brew  |  \u003cstrong\u003e20-litre bucket:\u003c\/strong\u003e 20–40 g\u003c\/div\u003e\n\u003cp\u003eFor an enhanced mineral drench, add \u003ca href=\"\/products\/fulvic-acid\"\u003eFulvic Acid Powder\u003c\/a\u003e at 1–2 g\/L to the finished tea before application. The fulvic acid chelates the volcanic minerals into a more immediately plant-available form.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eMethod 2: soil broadcast and incorporation\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eVegetable beds and borders: maintenance\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100 g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Spring and\/or autumn\u003c\/div\u003e\n\u003cp\u003eScatter over moist soil surface and rake into the top 5 cm immediately to prevent wind dispersal. Water in well. The fine particles begin weathering on contact with soil moisture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eNew or depleted beds: first application\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 200–300 g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once, before first planting\u003c\/div\u003e\n\u003cp\u003eIncorporate into the top 15–20 cm thoroughly before planting. Use the higher rate for soils that have never received rock dust or that are known to be mineral-depleted. The fine particles begin producing silicic acid and releasing trace minerals within days of incorporation into moist soil.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eContainers and potting media\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 5 g per litre of compost (approx. 1 teaspoon per litre)  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once at potting\u003c\/div\u003e\n\u003cp\u003eMix thoroughly into compost before planting. Far more effective than granulated rock dust in containers: the fine particles weather within a single growing season, releasing their mineral content while the plant is actively growing. Worth doing in peat-free media, which contain very little native mineral content.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eCompost heap activation\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Light dusting between layers  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Each time you add material\u003c\/div\u003e\n\u003cp\u003eDust between green and brown layers as you build or turn the heap. The heat, moisture and microbial acidity within an active compost heap weather the fine particles far faster than open soil, and the finished compost carries the mineral content with it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eAcid soil pH correction: lime alternative\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 200–400 g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Annually until target pH is reached\u003c\/div\u003e\n\u003cp\u003eAt pH 11, the powder raises soil pH progressively through the same weathering reaction that releases its minerals. Apply 200–400 g\/m² annually and test soil pH each spring. The correction is gentler and longer-lasting than lime, with no overliming risk, and it supplies trace minerals and silica that lime does not. Expect pH to rise by approximately 0.3–0.5 units per growing season at the higher application rate, depending on starting pH and soil type. If you are not sure which way your soil needs to go, start with \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-increase-or-decrease-your-soil-ph\"\u003ehow to make soil more acidic, or raise the pH\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawns\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100–200 g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once or twice a year, spring and\/or autumn\u003c\/div\u003e\n\u003cp\u003eSpread on a damp, still day and water in well afterwards. The fine dust can sit on the grass blades until it is washed down to the soil.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eRates at a glance\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSituation\u003c\/th\u003e\n\u003cth\u003eRate\u003c\/th\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompost tea\u003c\/td\u003e\n\u003ctd\u003e1–2 g per litre of brew (20–40 g per 20 L)\u003c\/td\u003e\n\u003ctd\u003eEach brew; use within 4 hours of stopping aeration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeds and borders, maintenance\u003c\/td\u003e\n\u003ctd\u003e100 g per m²\u003c\/td\u003e\n\u003ctd\u003eSpring and\/or autumn\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNew or depleted beds\u003c\/td\u003e\n\u003ctd\u003e200–300 g per m²\u003c\/td\u003e\n\u003ctd\u003eOnce, before first planting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContainers and potting media\u003c\/td\u003e\n\u003ctd\u003e5 g per litre of compost\u003c\/td\u003e\n\u003ctd\u003eOnce at potting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompost heap\u003c\/td\u003e\n\u003ctd\u003eLight dusting between layers\u003c\/td\u003e\n\u003ctd\u003eEach time you add material\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAcid soil pH correction\u003c\/td\u003e\n\u003ctd\u003e200–400 g per m²\u003c\/td\u003e\n\u003ctd\u003eAnnually until target pH is reached\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLawns\u003c\/td\u003e\n\u003ctd\u003e100–200 g per m²\u003c\/td\u003e\n\u003ctd\u003eOnce or twice a year, spring and\/or autumn; water in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eA note on timescales\u003c\/span\u003e\n\u003cp\u003eEven micronised powder works through mineral weathering rather than instant solubility; this is not a liquid fertiliser. The finer particle size means faster results than granulated material, but the full mineral benefit still builds over one or more growing seasons. Most growers notice silicon-driven improvements, stronger stems and firmer fruit, within the first season. The mineral reserve compounds over successive annual applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003eCombine with a base granular fertiliser, the \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eOrganic All Purpose Fertiliser 4-4-4\u003c\/a\u003e or a crop-specific blend. Adding \u003ca href=\"\/products\/fulvic-acid\"\u003eFulvic Acid Powder\u003c\/a\u003e to compost tea applications improves mineral uptake, since the fulvic acid chelates the volcanic minerals for root absorption. For long-term soil building, combine with soluble \u003ca href=\"\/products\/humic-acid\"\u003eHumic Acid Flakes\u003c\/a\u003e as a monthly soil drench and \u003ca href=\"\/products\/organic-granulated-volcanic-rock-minerals-basalt-soil-conditioner\"\u003eGranulated Volcanic Rock Dust\u003c\/a\u003e for the slow-release reservoir. Use \u003ca href=\"\/products\/bokashi-soil-conditioner\"\u003eGrow-Kashi\u003c\/a\u003e to inoculate the biology that weathers rock particles fastest.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage\u003c\/span\u003e\n\u003cp\u003eKeep the bag sealed, or decant into an airtight tub, somewhere cool and dry. The powder draws moisture from the air and clumps if left open; clumping does not affect it, but it makes measuring a nuisance. Stored dry it does not go off. Rock does not have a shelf life.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 4 — FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-vr-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions about this micronised powder\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq1\"\u003eWhat is this micronised powder for?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThis bag is the fine powder form: fast-weathering silicon and 60+ trace minerals for compost tea, pots and beds, with a dry pH of 11 so it also works as a gentle lime alternative. For the definition of rock dust itself — what it is, silicon, carbon and the research — see \u003ca href=\"\/blogs\/the-dr-forest-blog\/volcanic-rock-dust-guide\"\u003eHow volcanic rock dust works\u003c\/a\u003e.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq2\"\u003eWhy choose the powder over the granulated version?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThe powder has far more surface area per gram, so it weathers sooner. Pick it when you want a response this season, when you want to use it in compost tea or a drench, or when mixing into potting compost. The granulated version is better for lawns and open ground where you want a long-term reserve without dust. Plenty of people use both: powder for the fast hit, granules for the years after.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq3\"\u003eCan I use it to raise soil pH instead of lime?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. The dry powder is pH 11, and it raises soil pH progressively through the same weathering reaction that releases its minerals. Apply 200–400 g\/m² annually and test soil pH each spring; expect roughly 0.3–0.5 units per season at the higher rate, depending on your starting pH and soil type. It is gentler and slower than lime, with no overliming risk, and it brings silica and trace minerals that lime does not.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq4\"\u003eIs it safe to put in compost tea?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. The powder stays in suspension while the pump runs and the minerals are partly chelated by the organic acids the brew produces. At 1–2 g per litre the pH 11 of the dry powder is negligible; the brew water and its organic acids buffer it. Add 20–40 g to a 20-litre bucket, keep the air on for 24–48 hours, and use it within 4 hours of stopping aeration.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq5\"\u003eWill the powder block my sprayer or watering can?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eA watering can is fine. For a sprayer with fine nozzles, strain the tea through 200 micron mesh or finer first; most of the powder passes, and straining protects the nozzle. Do not run powder suspensions through drip irrigation emitters. Drench around the plants instead.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq6\"\u003eDoes volcanic rock dust replace fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNo. It supplies silicon and trace minerals that most fertilisers leave out, and nothing much in the way of nitrogen. Use it alongside a base feed such as \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eOrganic All Purpose Fertiliser 4-4-4\u003c\/a\u003e or a crop-specific blend. The minerals it supplies are the cofactors that let plants make full use of the NPK they are given.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq7\"\u003eHow quickly will I see results?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eWithin the first season for silicon-driven changes such as stronger stems and firmer fruit, because the fine powder starts producing silicic acid soon after it meets moist soil. The mineral reserve builds over successive annual applications. If you want a result you can see in a week, this is the wrong product; that is what a liquid feed is for.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq8\"\u003eIs it safe for children, pets, bees and edible crops?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. It is ground rock with nothing added, and there is no withholding period on edible crops. The Sheffield and Newcastle silicate-rock trials both checked for potentially toxic elements in the harvested crop and found no significant accumulation. Once it is raked in or watered in, the garden is safe for children and pets as normal. The one precaution is the dust itself: apply on a still day or to moist soil, and wear a mask in enclosed spaces.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq9\"\u003eIs it organic, and is it vegan?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is a single mined mineral with nothing added, so it suits organic, no-dig and vegan growing. It contains no animal or plant material of any kind, and no synthetic chemistry.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-vr-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-vr-faq10\"\u003eHow should I store the powder?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eSealed, cool and dry. Reseal the bag after each use or decant into an airtight tub. It absorbs moisture from the air and clumps if left open, which does no harm but makes it awkward to measure. Kept dry it lasts indefinitely.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-vr-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-vr-faq-paa1\" class=\"drf-faq-q\"\u003eWhere can I buy volcanic rock dust in the UK?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eHere. This micronised volcanic rock dust is packed in Stockport in 500 g, 1.5 kg, 4 kg, 9 kg and 15 kg bags and posted to any UK address. It's the fine powder: a zeolite-bearing volcanic silicate, 48% silica, pH 11, ground fine enough to stay suspended in compost tea and to start weathering in the first season. If you want a slower, longer-lasting dressing for open ground, the same rock comes as \u003ca href=\"\/products\/organic-granulated-volcanic-rock-minerals-basalt-soil-conditioner\"\u003egranulated rock dust\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-vr-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-vr-faq-paa2\" class=\"drf-faq-q\"\u003eHow much rock dust should I add to soil?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eFor established beds and borders, 100 g per m² in spring and\/or autumn, scattered on moist soil and raked into the top 5 cm. For new or depleted beds, 200–300 g per m² once, worked into the top 15–20 cm before planting. In pots, 5 g per litre of compost (about a teaspoon) mixed in at potting. In compost tea, 1–2 g per litre of brew. If you're using it to raise the pH of acid soil, 200–400 g per m² a year, testing each spring. Rake it in straight away so it doesn't blow about.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ===== END 4-TAB BODY ===== --\u003e\n","brand":"Dr Forest","offers":[{"title":"500g","offer_id":53587294323062,"sku":"DF-BASALT-500G","price":5.99,"currency_code":"GBP","in_stock":true},{"title":"1.5kg","offer_id":44205185794235,"sku":"DF-BASALT-1.5","price":11.0,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":33358119108696,"sku":"DF-BASALT-4","price":22.0,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":33358119141464,"sku":"DF-BASALT-9","price":40.49,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":44740971888827,"sku":"DF-BASALT-15","price":65.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/micronized-volcanic-rock-minerals-basalt-organic-soil-conditioner-975.webp?v=1786553589"},{"product_id":"organic-all-purpose-fertiliser-4-4-4","title":"Organic All Purpose Fertiliser 4-4-4 | Veg, Fruit \u0026 Flowers","description":"\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; 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padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; background: var(--drf-grn-dark); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 500; font-size: 0.95em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST (1px alternating) ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn-dark); }\n\n  \/* ── COMPARISON BOXES ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-white); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn-dark); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; font-weight: 500; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 500; color: var(--drf-grn-dark); font-size: 0.98em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '\\2212'; background: var(--drf-grn-dark); border-color: var(--drf-grn-dark); color: #fff; }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 2000px; }\n\n  \/* ── REFERENCES ── *\/\n  .drf-refs { font-size: 0.78em; color: #7d827c; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n\n  \/* ── TABLES ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.9em; }\n  .drf-wrap table th { background: var(--drf-grn-dark); color: #fff; padding: 0.6em 0.8em; text-align: left; font-weight: 500; font-size: 0.85em; letter-spacing: 0.04em; text-transform: uppercase; }\n  .drf-wrap table td { padding: 0.5em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: #f4f6f3; }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-ap-tabset\" id=\"drf-ap-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-ap-tabset\" id=\"drf-ap-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-ap-tabset\" id=\"drf-ap-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-ap-tabset\" id=\"drf-ap-tab4\"\u003e \u003cinput type=\"radio\" name=\"drf-ap-tabset\" id=\"drf-ap-tab5\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-ap-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-ap-tab2\"\u003eIngredients\u003c\/label\u003e \u003clabel for=\"drf-ap-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-ap-tab4\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-ap-tab5\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003c!-- TAB 1: OVERVIEW --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ap-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eOrganic fertiliser · balanced 4-4-4 · Stockport\u003c\/span\u003e\n\u003ch2\u003eAll Purpose 4-4-4 — a balanced organic fertiliser for the whole garden\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAll Purpose 4-4-4 is a balanced organic fertiliser that feeds almost everything in the garden from a single bag\u003c\/strong\u003e — vegetables, fruit, flowers, herbs, shrubs and container plants. An even ratio of nitrogen, phosphorus and potash covers leaf, root and flower together, released slowly through soil biology so there are no salt spikes and no scorched roots. Dr Forest blends this organic plant food by hand in Stockport from ten organic inputs, with slow-release phosphorus and calcium from bone meal and natural biostimulants from Scottish seaweed and alfalfa.\u003c\/p\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eBalanced 4-4-4 NPK\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e10 Organic Inputs\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eVeg · Fruit · Flowers\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eSlow \u0026amp; Steady Release\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003ePots, Beds \u0026amp; Allotments\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003eHandcrafted in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c!-- stage-feeding-link 2026-10-12 --\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStage feeding?\u003c\/span\u003e\n\u003cp\u003eIf you stage feed, this is for you. Our \u003ca href=\"\/pages\/feeding-schedule\"\u003efeeding schedule and calculator\u003c\/a\u003e pairs All Purpose 4-4-4 with Bloom 2-8-4 week by week. Enter your pot size for exact doses, the bags to buy and the cost per plant.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c!-- GEO published 2026-10-07 fix5 — AP compare table live --\u003e\n\u003cdiv class=\"drf-compare\" id=\"ap-vs-bfb-vs-liquid\" style=\"margin:24px 0 28px;padding:20px 22px;background:var(--drf-cream,#F5F2EC);border:1px solid #e6ede8;\"\u003e\n\u003cp class=\"drf-eyebrow\" style=\"margin:0 0 10px;\"\u003eCompare\u003c\/p\u003e\n\u003ch3 style=\"margin:0 0 8px;font-size:20px;color:var(--drf-grn-dark,#0F2A1F);\"\u003eHow it compares with blood, fish and bone, and plant-based liquids\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 14px;font-size:14px;line-height:1.55;\"\u003eUse this table when someone asks what “best organic fertiliser” means in practice.\u003c\/p\u003e\n\u003cdiv style=\"overflow-x:auto;\"\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:13px;line-height:1.45;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"text-align:left;border-bottom:2px solid var(--drf-grn,#1B3D2F);\"\u003e\n\u003cth style=\"padding:8px 10px;\"\u003e \u003c\/th\u003e\n\u003cth style=\"padding:8px 10px;\"\u003eAll Purpose 4-4-4\u003c\/th\u003e\n\u003cth style=\"padding:8px 10px;\"\u003eBlood, fish \u0026amp; bone\u003c\/th\u003e\n\u003cth style=\"padding:8px 10px;\"\u003ePlant-based liquid\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"border-bottom:1px solid #e6ede8;\"\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003e\u003cstrong\u003eTypical NPK role\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eBalanced 4-4-4: leaf, root and flower together\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eOften N- and P-led from animal meals; K usually lower unless fortified\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eWide range; many are dilute NPK or seaweed-led biostimulants labelled as feed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid #e6ede8;\"\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003e\u003cstrong\u003eRelease\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eSlow, via soil biology: weeks, not hours\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eModerate; blood\/fish faster than bone meal phosphorus\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eFast when nutrients are soluble; repeat applications common\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"border-bottom:1px solid #e6ede8;\"\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003e\u003cstrong\u003eCalcium \/ magnesium\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eBone meal calcium in the blend; magnesium from other meals as formulated\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eCalcium from bone; magnesium not the headline\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eUsually little Ca\/Mg unless the label adds them\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003e\u003cstrong\u003eVegan?\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eNo. Includes bone meal\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eNo. Animal by-products\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;\"\u003eOften yes, if plant-only (check the label)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eIt takes over from our Veg 4-4-4. Growers kept using that right across the plot rather than only for leafy growth, so we reformulated it as a true all-purpose feed — the same balanced 4-4-4 ratio, but a new recipe with some different ingredients chosen to suit the whole garden. The even ratio covers the majority of what UK gardeners grow, and the feeding guide simply matches the rate to how hungry each plant is.\u003c\/p\u003e\n\u003cp\u003eIt is a granular dry amendment — sprinkle it on or mix it in, with no dissolving, no measuring pH and no weekly liquid feeding. Because the nutrients come from organic meals and slow-release minerals rather than soluble salts, soil microbes release them at the pace the plant demands, building soil health rather than degrading it. Compostable packaging, handcrafted in small batches.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e4-4-4\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eBalanced NPK\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e10\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eOrganic Inputs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e8 wk\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eFeeds Up To\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eCa+Mg\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eBuilt In\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- wave-0-1:ap-default-bag --\u003e\n\u003ch2\u003eIs this the organic fertiliser to buy if I only want one bag?\u003c\/h2\u003e\n\u003cp\u003eYes — if you want \u003cstrong\u003eone default bag of organic fertiliser\u003c\/strong\u003e for mixed beds, pots and general garden use, start here. The balanced 4-4-4 covers leaf, root and flower together without chasing a different bag for every crop. Honest limits: lawns are better on a lawn specialist; heavy-fruiting tomatoes and peppers do better on \u003ca href=\"\/products\/organic-tomato-fertiliser\"\u003eTomato Fertiliser 3-4-6\u003c\/a\u003e; roses prefer their own \u003ca href=\"\/products\/organic-rose-fertiliser\"\u003eRose \u0026amp; Shrub 5-3-5\u003c\/a\u003e. If you garden vegan, this is not the bag — it contains bone meal — choose a plant-based or vegan SKU from the \u003ca href=\"\/collections\/organic-fertilisers\"\u003eorganic fertilisers\u003c\/a\u003e range instead. For the NPK in plain English, see \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-4-4-4-fertiliser\"\u003ewhat 4-4-4 means\u003c\/a\u003e; for more garden questions, the \u003ca href=\"\/pages\/organic-fertiliser-faq\"\u003eorganic fertiliser FAQ\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eA granular feed, not a weekly liquid\u003c\/h2\u003e\n\u003cp\u003eSearch “organic fertiliser”, “all purpose plant food” or “all-purpose fertiliser” and you are usually looking for the same job: a steady feed that does not scorch. This bag is a granular organic meal blend — you sprinkle it and soil life releases the nutrients over weeks — not a Miracle-Gro-style soluble liquid you mix weekly. British gardeners who want one Stockport-made bag for the plot, without a fake “lab test” story, land here. Browse crop blends and single nutrients in the \u003ca href=\"\/collections\/organic-fertilisers\"\u003eorganic fertilisers\u003c\/a\u003e collection when one bag is not enough.\u003c\/p\u003e\n\u003c!-- \/wave-0-1:ap-default-bag --\u003e\n\n\u003ch3\u003eOne fertiliser, the whole garden\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetable beds and allotments\u003c\/strong\u003e — feeds brassicas, roots, legumes, alliums and salad crops, with calcium and magnesium most veg feeds leave out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf, brassicas, herbs and borders.\u003c\/strong\u003e Tomatoes, cucumbers, peppers and chillies are better on their own packs. Roses are better on \u003ca href=\"\/products\/organic-rose-fertiliser\"\u003eRose \u0026amp; Shrub 5-3-5\u003c\/a\u003e, twice a season.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDahlias and flower borders\u003c\/strong\u003e — steady feeding for strong stems, healthy foliage and repeat blooms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePots, containers and hanging baskets\u003c\/strong\u003e — mix in at potting, then top dress as the compost runs down.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHerbs and leafy greens\u003c\/strong\u003e — gentle, sustained nitrogen for lettuce, spinach, chard, basil and parsley.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShrubs, evergreens, hedging and trees\u003c\/strong\u003e — a balanced spring and summer feed for box, yew, laurel, privet, conifers, acers, hydrangeas, ferns and ornamental grasses that have no crop-specific feed of their own.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo-dig and living-soil plots\u003c\/strong\u003e — feeds the soil food web directly; seaweed, humic acid and biochar build fertility season after season.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOrganic dry amendment vs synthetic soluble feed\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eDr Forest All Purpose 4-4-4\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e10 organic inputs — several sources per nutrient, for even release\u003c\/li\u003e\n\u003cli\u003eFeeds through microbial breakdown at the rate plants demand\u003c\/li\u003e\n\u003cli\u003eCalcium, magnesium and sulphur built in\u003c\/li\u003e\n\u003cli\u003eBuilds soil biology and structure with every application\u003c\/li\u003e\n\u003cli\u003eNo salt build-up; the soil improves rather than degrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eTypical synthetic soluble feed\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTwo or three mineral salts, quickly used up\u003c\/li\u003e\n\u003cli\u003eA spike of availability, then run-off\u003c\/li\u003e\n\u003cli\u003eUsually no calcium and few trace minerals\u003c\/li\u003e\n\u003cli\u003eBypasses the soil food web entirely\u003c\/li\u003e\n\u003cli\u003eSalt accumulation can harm roots and soil life over time\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 0.86em; color: #3a4a40;\"\u003eHandcrafted in small batches in Stockport, Greater Manchester, using British ingredients where possible, including Scottish seaweed. No synthetic chemistry. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- TAB 2: INGREDIENTS --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ap-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eWhat's Inside\u003c\/span\u003e\n\u003ch2\u003eTen organic inputs, each with a job to do\u003c\/h2\u003e\n\u003cp\u003eThis is a multi-input blend, not a two-part salt feed. Every ingredient earns its place — a primary nutrient, a secondary nutrient, or a biological function. Shares below are the proportion of the mix.\u003c\/p\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e01\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e33% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eAlfalfa meal\u003c\/h4\u003e\n\u003cp\u003eThe largest single input, and the carbon backbone of the blend. At a third of the mix, alfalfa is the main source of plant-based organic matter — the carbon that soil microbes feed on and steadily turn into humus, building soil structure, water-holding and long-term fertility. It also carries triacontanol, a natural growth promoter shown to lift chlorophyll and photosynthesis, along with nitrogen, potassium and amino acids that feed soil bacteria. It breaks down at a medium pace, bridging the fast and slow nitrogen sources.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e02\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e18% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eBone meal\u003c\/h4\u003e\n\u003cp\u003eThe main phosphorus and calcium source — around 18% phosphorus (P₂O₅) with a large calcium fraction, released slowly as soil acids and microbes work on it. Phosphorus drives roots, flowering and fruit set; calcium builds firm cell walls. Availability is best in slightly acidic to neutral soil. (Because it contains bone meal, this blend is not suitable for vegan gardening.)\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e03\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e18% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eNitrogen plant extract\u003c\/h4\u003e\n\u003cp\u003eA concentrated plant nitrogen at around 13% N, derived from molasses and rich in amino acids — the early drive of the blend. Amino-acid nitrogen is taken up efficiently and feeds through microbial mineralisation rather than as a soluble salt, so there is no ammonia volatilisation and no EC spike, just a steady release as the soil warms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e04\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e10% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eFlaxseed meal\u003c\/h4\u003e\n\u003cp\u003eCold-pressed linseed meal adds a further slow-release nitrogen source plus organic matter and oils that feed the soil microbiome. It rounds out the nitrogen curve and improves the texture and workability of the blend in the soil.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e05\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e6% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eGypsum\u003c\/h4\u003e\n\u003cp\u003eCalcium sulphate — a pH-neutral source of calcium and sulphur. It adds calcium without shifting soil pH, supports cell-wall strength and fruit quality, and helps open up heavier soils.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e06\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e5.5% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eSulphate of potash\u003c\/h4\u003e\n\u003cp\u003eChloride-free potassium (50% K₂O) with sulphur alongside. Potassium governs water movement, fruit and flower quality and disease resistance — the nutrient fruiting crops draw down hardest — and the sulphate form avoids the chloride that some crops dislike.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e07\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e5% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eKieserite\u003c\/h4\u003e\n\u003cp\u003eMagnesium sulphate — a steady source of magnesium and sulphur. Magnesium sits at the centre of every chlorophyll molecule, so it keeps foliage green; sulphur supports protein and amino-acid synthesis.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e08\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e2% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eScottish seaweed\u003c\/h4\u003e\n\u003cp\u003eCold-water \u003cem\u003eAscophyllum nodosum\u003c\/em\u003e from the Scottish coast. A biostimulant rather than a headline nutrient source, it supplies cytokinins, auxins, alginates and a spread of trace elements that prime the plant's own growth and stress responses.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e09\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e1% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eHumic \u0026amp; fulvic acid\u003c\/h4\u003e\n\u003cp\u003eHumic acid raises the soil's cation exchange capacity and improves structure and root growth; fulvic acid is a low-molecular-weight chelator that binds micronutrients into forms roots can take up. A little goes a long way.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e10\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e1% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eFermented biochar\u003c\/h4\u003e\n\u003cp\u003ePyrolysed carbon with a vast internal surface that houses beneficial microbes. Pre-fermented so it is biologically active from day one, it helps hold nutrients in the root zone and reduce leaching under heavy watering or rain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- TAB 3: HOW TO USE --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ap-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eFeeding guide: light, medium and heavy feeders\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eTwo ways to apply\u003c\/span\u003e\n\u003cp\u003e\u003cstrong\u003eSoil mix (before planting):\u003c\/strong\u003e 5–10 g per litre of soil or compost, worked in thoroughly. \u003cstrong\u003eTop dress (during growth):\u003c\/strong\u003e 2–4 g per litre of soil, scattered on the surface and watered in. As a guide, a level tablespoon holds roughly 12–15 g. Match the rate to how hungry the plant is, using the three groups below. For exact doses by pot size, use the \u003ca href=\"\/pages\/feeding-schedule\"\u003efeeding schedule and calculator\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003ePlants are grouped by how much feeding they need. Light feeders — legumes, root crops and Mediterranean herbs — grow best in leaner soil and can run to leaf or fork if overfed. Brassicas and container plants draw nutrients down fast. They need the top of the range. They do not need a fortnightly feed. Medium feeders sit in between.\u003c\/p\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLight feeders — lean and steady\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eSoil mix:\u003c\/strong\u003e 5 g\/L  |  \u003cstrong\u003eTop dress:\u003c\/strong\u003e 2 g\/L  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e every 5–6 weeks, or once per season\u003c\/div\u003e\n\u003cp style=\"margin-bottom: 0.5em;\"\u003eFix their own nitrogen or store food in their roots, so too much feed brings leafy tops, forked roots or fewer flowers.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetables:\u003c\/strong\u003e peas, broad beans, runner beans, French beans, carrots, parsnips, beetroot, radishes, turnips, onions, garlic, shallots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHerbs:\u003c\/strong\u003e rosemary, thyme, sage, oregano, bay, lavender.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrnamentals \u0026amp; evergreens:\u003c\/strong\u003e established trees and shrubs, conifers and evergreens, hedging (box, yew, privet, laurel), topiary, acers, ferns, ornamental grasses, alpines, nasturtiums and wildflower areas.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eMedium feeders — the everyday majority\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eSoil mix:\u003c\/strong\u003e 7–8 g\/L  |  \u003cstrong\u003eTop dress:\u003c\/strong\u003e 3 g\/L  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e every 3–4 weeks in the growing season\u003c\/div\u003e\n\u003cp style=\"margin-bottom: 0.5em;\"\u003eSteady demand through the season, happy on a balanced feed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetables:\u003c\/strong\u003e potatoes, sweetcorn, salad leaves, lettuce, spinach, chard, rocket, kale, leeks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruit:\u003c\/strong\u003e strawberries, raspberries, blackcurrants, redcurrants, gooseberries, blueberries. This is not an ericaceous feed: keep them in ericaceous compost or acid soil and stay at the low rate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlowers \u0026amp; shrubs:\u003c\/strong\u003e hardy annuals, cosmos, sweet peas, sunflowers, geraniums, petunias, most herbaceous perennials and bedding, flowering shrubs (hydrangea, hebe, viburnum) and climbers (wisteria, honeysuckle, jasmine).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eHeavy feeders — hungry and fast\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eSoil mix:\u003c\/strong\u003e 10 g\/L  |  \u003cstrong\u003eTop dress:\u003c\/strong\u003e 4 g\/L  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e every 3–4 weeks. Every 2 weeks only in thin, sandy soil, or if leaves are evenly pale. 4 g\/L is already the top of the range\u003c\/div\u003e\n\u003cp style=\"margin-bottom: 0.5em;\"\u003eHigh, sustained demand, especially in pots, grow bags and baskets where roots are confined and watering leaches nutrients away.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIf this is the only bag:\u003c\/strong\u003e tomatoes, cucumbers, courgettes, marrows, pumpkins, squash, peppers, chillies and aubergines can use it. Their own packs suit them better.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrassicas:\u003c\/strong\u003e cabbage, cauliflower, broccoli, Brussels sprouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHungry crops \u0026amp; flowers:\u003c\/strong\u003e rhubarb, celery, dahlias, chrysanthemums, clematis, hanging baskets and patio containers. Roses: two dressings a season on \u003ca href=\"\/products\/organic-rose-fertiliser\"\u003eRose \u0026amp; Shrub 5-3-5\u003c\/a\u003e, not every 3–4 weeks on this bag.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eOutdoor beds, borders and allotments\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100–300 g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e every 4–6 weeks in the growing season\u003c\/div\u003e\n\u003cp\u003eScatter evenly and work lightly into the top 5–10 cm. Lower end for light feeders and established beds. The upper end, around 300 g\/m², is for a new or tired bed, once. Do not repeat 300 g\/m² every 4 weeks. A handful is roughly 40–50 g.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eStep by step\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare the soil.\u003c\/strong\u003e For new plantings, mix All Purpose 4-4-4 into the compost or bed at 5–10 g per litre before planting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatch the rate to the plant.\u003c\/strong\u003e Light feeders at the lower end, heavy feeders at the upper end, using the three groups above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater in.\u003c\/strong\u003e After a top dress, water well — moisture activates the soil biology that releases the nutrients.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatch the plant.\u003c\/strong\u003e When lower leaves fade from deep green to pale, or growth slows, it is time to top dress again.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRepeat through the season.\u003c\/strong\u003e Keep to the frequency for the feeder group; ease off as crops finish or plants go dormant.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eFive common mistakes\u003c\/span\u003e\n\u003cp\u003e\u003cstrong\u003e1.\u003c\/strong\u003e Overfeeding light feeders — beans and carrots want lean soil. \u003cstrong\u003e2.\u003c\/strong\u003e Underfeeding pots — confined roots and frequent watering empty a container fast. \u003cstrong\u003e3.\u003c\/strong\u003e Expecting an overnight response — this feeds over weeks, not hours. \u003cstrong\u003e4.\u003c\/strong\u003e Applying to bone-dry soil — always water in. \u003cstrong\u003e5.\u003c\/strong\u003e Feeding dormant plants in winter — wait until growth restarts in spring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003ePair with \u003ca href=\"\/products\/sulphate-of-potash\"\u003eSulphate of Potash\u003c\/a\u003e for a potash lift on tomatoes, roses and fruit as they flower and set, and with \u003ca href=\"\/products\/organic-scottish-seaweed-kelp-meal-fertiliser\"\u003eSeaweed Plant Food\u003c\/a\u003e for extra biostimulant during heat or transplant stress, or mix \u003ca href=\"\/products\/organic-seaweed-powder-concentrated-100-soluble-fertiliser-dr\"\u003eSeaweed Extract Powder\u003c\/a\u003e into water as a soluble foliar. For fruiting crops that want more phosphorus and potash later on, our \u003ca href=\"\/products\/organic-fruit-vegetable-fertiliser\"\u003eFruit \u0026amp; Vegetable Fertiliser 4-5-6\u003c\/a\u003e carries them through to harvest.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage\u003c\/span\u003e\n\u003cp\u003eKeep the bag sealed in a cool, dry place. As a natural product it may vary slightly in colour and texture between batches, and the odd seed may sprout if left damp — neither affects performance. It contains bone meal, which some dogs find tempting, so store out of reach of children and pets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePacks, delivery and returns\u003c\/span\u003e\n\u003cp\u003eSold in 1.5 kg, 4 kg, 9 kg, 15 kg, 30 kg and 60 kg packs. Delivery is free on UK orders of £40 and over. Unopened packs can be returned within 30 days of delivery; return postage is yours unless the pack arrived damaged or you were sent the wrong item, in which case we replace or refund it. Full terms are in our \u003ca href=\"\/policies\/refund-policy\"\u003erefund policy\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- TAB 4: THE SCIENCE --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ap-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eWhy a balanced 4-4-4 works across so many plants\u003c\/h2\u003e\n\u003cp\u003eNitrogen builds leaves and stems, phosphorus drives roots and flower set, potassium governs water movement, fruit quality and disease resistance. Nearly every plant needs all three throughout its life; what changes between crops is the quantity, not the mix. A balanced 4-4-4 supplies the full range, and the feeding rate is matched to demand.\u003c\/p\u003e\n\u003cp\u003eBecause the nutrients are held in organic matter and slow-release minerals rather than soluble salts, soil microbes release them as the plant's roots call for them. That is why one bag suits a hungry courgette and a lean-feeding carrot: the plant and its root-zone biology set the pace.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eFeed the soil, and the soil feeds the plant — at the rate each crop actually demands.\u003c\/div\u003e\n\u003ch3\u003eMechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eFive nitrogen sources, released steadily\u003c\/h4\u003e\n\u003cp\u003eAn amino-acid nitrogen extract derived from molasses (13% N) gives the early drive, while alfalfa, flaxseed meal, bone meal and seaweed release nitrogen more slowly through microbial mineralisation (Cassity-Duffey et al., 2020). Staggered release means healthy growth without the soft, sappy, pest-prone tissue that a single hit of soluble nitrogen produces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eSlow-release phosphorus and calcium\u003c\/h4\u003e\n\u003cp\u003eBone meal supplies phosphorus (around 18% P₂O₅) alongside a large dose of calcium, released as soil acids and microbes work on it. Phosphorus is the core of ATP, driving root development, cell division and flower and fruit set. Availability is highest in slightly acidic to neutral soil (Penn \u0026amp; Camberato, 2019).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eChloride-free potash\u003c\/h4\u003e\n\u003cp\u003eSulphate of potash (50% K₂O) delivers potassium in a chloride-free form with sulphur alongside, topped up by potassium in alfalfa and seaweed. Sulphate-based potassium suits chloride-sensitive crops such as tomatoes, strawberries and potatoes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eCalcium, magnesium and sulphur built in\u003c\/h4\u003e\n\u003cp\u003eGypsum (calcium sulphate) and kieserite (magnesium sulphate) supply the calcium, magnesium and sulphur most all-purpose feeds omit, with more calcium from the bone meal. Most liquid feeds contain no calcium at all — a key gap this blend closes. Magnesium sits at the centre of chlorophyll; sulphur drives protein synthesis.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eSeaweed biostimulant\u003c\/h4\u003e\n\u003cp\u003eScottish seaweed (\u003cem\u003eAscophyllum nodosum\u003c\/em\u003e) supplies cytokinins, auxins, alginates and trace elements. Reviews of seaweed biostimulants report gains in growth, yield and crop quality across a range of crops (Khan et al., 2009; Ali et al., 2021).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003eTriacontanol from alfalfa\u003c\/h4\u003e\n\u003cp\u003eAlfalfa carries triacontanol, a natural plant growth regulator linked in the literature to higher chlorophyll content and photosynthetic rate (Naeem et al., 2012), on top of the nitrogen and amino acids it contributes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e07\u003c\/span\u003e\n\u003ch4\u003eHumic substances feed the biology\u003c\/h4\u003e\n\u003cp\u003eHumic and fulvic acids stimulate root growth and microbial activity and improve nutrient uptake (Nardi et al., 2002; Canellas \u0026amp; Olivares, 2014); they also raise the soil's cation exchange capacity. Fulvic acid chelates micronutrients into plant-available forms.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e08\u003c\/span\u003e\n\u003ch4\u003eBiochar holds nutrients in place\u003c\/h4\u003e\n\u003cp\u003eFermented biochar's vast internal surface provides habitat for soil microbes (Lehmann et al., 2011) and helps hold nutrients in the root zone, so less drains away after heavy watering or rain.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e09\u003c\/span\u003e\n\u003ch4\u003eAlfalfa: the carbon backbone that builds soil\u003c\/h4\u003e\n\u003cp\u003eAt a third of the blend, alfalfa is the main organic-carbon feedstock — the raw material soil microbes live on. As they consume it, part of that carbon is stabilised as soil organic matter, the humus fraction that holds water, resists compaction and stores nutrients on the soil's exchange sites. Feeding the soil organic carbon this way builds that fraction over repeated seasons, so fertility compounds rather than running down.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eOrganic versus synthetic — the evidence\u003c\/h3\u003e\n\u003cp\u003eDry organic feeding builds soil rather than depleting it. A global meta-analysis found organic fertilisation raised plant biomass by 56% while maintaining plant diversity, where inorganic-only feeding raised biomass 42% but cut species richness by 18% (Shi et al., 2024). Organic feeding also tends to lower nitrate accumulation in leafy crops compared with synthetic nitrogen, and long-term trials such as Rothamsted's Park Grass show organic plots holding or improving while mineral-only plots decline.\u003c\/p\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eKhan, W. et al. (2009). Seaweed extracts as biostimulants of plant growth and development. \u003cem\u003eJournal of Plant Growth Regulation\u003c\/em\u003e, 28, 386–399.\u003c\/li\u003e\n\u003cli\u003eAli, O., Ramsubhag, A. \u0026amp; Jayaraman, J. (2021). Biostimulant properties of seaweed extracts in plants: implications towards sustainable crop production. \u003cem\u003ePlants\u003c\/em\u003e, 10(3), 531.\u003c\/li\u003e\n\u003cli\u003eNaeem, M. et al. (2012). Triacontanol: a potent plant growth regulator in agriculture. \u003cem\u003eJournal of Plant Interactions\u003c\/em\u003e, 7(2), 129–142.\u003c\/li\u003e\n\u003cli\u003eNardi, S., Pizzeghello, D., Muscolo, A. \u0026amp; Vianello, A. (2002). Physiological effects of humic substances on higher plants. \u003cem\u003eSoil Biology \u0026amp; Biochemistry\u003c\/em\u003e, 34, 1527–1536.\u003c\/li\u003e\n\u003cli\u003eCanellas, L. \u0026amp; Olivares, F. (2014). Physiological responses to humic substances as plant growth promoter. \u003cem\u003eChemical and Biological Technologies in Agriculture\u003c\/em\u003e, 1, 3.\u003c\/li\u003e\n\u003cli\u003eLehmann, J. et al. (2011). Biochar effects on soil biota — a review. \u003cem\u003eSoil Biology \u0026amp; Biochemistry\u003c\/em\u003e, 43(9), 1812–1836.\u003c\/li\u003e\n\u003cli\u003ePenn, C. \u0026amp; Camberato, J. (2019). A critical review on soil pH and phosphorus availability. \u003cem\u003eAgriculture\u003c\/em\u003e, 9(6), 120.\u003c\/li\u003e\n\u003cli\u003eCassity-Duffey, K. et al. (2020). Nitrogen mineralisation from organic materials and fertilisers. \u003cem\u003eSoil Science Society of America Journal\u003c\/em\u003e, 84, 522–533.\u003c\/li\u003e\n\u003cli\u003eShi, T.-S. et al. (2024). A global meta-analysis on the effects of organic and inorganic fertilization on grasslands and croplands. \u003cem\u003eNature Communications\u003c\/em\u003e, 15, 3411.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"margin-top: 0.6em;\"\u003eFigures describe the published literature on these ingredient classes and are not product-specific yield guarantees.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- TAB 5: FAQ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ap-panel5\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq1\"\u003eWhat is the best organic fertiliser for planting?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eFor mixed planting across veg, fruit, flowers, herbs and containers, a balanced bag is the sensible start — not a different SKU for every plant. This All Purpose feed is \u003cstrong\u003e4% nitrogen, 4% phosphorus, 4% potash\u003c\/strong\u003e with ten named organic inputs, so one bag covers leaf, root and flower together. Use it as the default plant-out feed; switch to a crop blend or single nutrient only when the seasonal job is clear (fruiting push, nitrogen correction, and so on). Browse the full range on \u003ca href=\"\/collections\/organic-fertilisers\"\u003eorganic fertilisers\u003c\/a\u003e.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq2\"\u003eWhat is an all-purpose 4-4-4 fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eA balanced organic plant food with equal parts nitrogen, phosphorus and potash (\u003cstrong\u003e4% each\u003c\/strong\u003e). That even ratio feeds leaf, root and flower, so one product covers vegetables, fruit, flowers, herbs, shrubs and container plants. Ours is a granular dry amendment built from ten organic inputs, handcrafted in Stockport — the successor to the old Veg 4-4-4 ratio, reformulated as a true all-purpose garden feed.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq3\"\u003eHow much All Purpose 4-4-4 do I use?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAbout 5–10 g per litre of soil or compost at planting, then 2–4 g per litre as a top dress, or 100–300 g per m² on beds. The feeding guide under How to Use gives the rate and frequency for each type of plant. Always prefer the rate printed on the pack in front of you.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq4\"\u003eHow long does it take to work, and how long does a dressing feed?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAn initial soil-mix charge feeds most plants for \u003cstrong\u003eup to about 8 weeks\u003c\/strong\u003e. The faster inputs (nitrogen extract, alfalfa) start working within days. The slower ones (bone meal, gypsum) keep releasing a little phosphorus and calcium after that, so plan to top dress at around 8 weeks. It is a steady feed, not an instant green-up — judge it over weeks in warm, moist soil. Cold ground stalls microbial release.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq5\"\u003eWill it burn plants — and can you put too much on?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eVery unlikely at the recommended rates: release is microbial rather than a soluble-salt spike. Keep granules off stems, water top-dresses in, and do not heap it on because growth looks slow after a week. Overdoing nitrogen still pushes soft, floppy growth; stick to the published band above.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq6\"\u003eIs it organic, and is it granular or powder?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eMade with organic ingredients. It's not certified organic. It is a fine granular dry amendment — sprinkle it on or mix it in, with no dissolving, measuring or pH testing.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq7\"\u003eIs it suitable for vegans?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNo. It contains \u003cstrong\u003ebone meal\u003c\/strong\u003e as a slow-release phosphorus and calcium source, so it is not suitable for vegan gardening. For plant-based options, see seaweed and mineral products, or \u003ca href=\"\/products\/organic-nitrogen-fertiliser\"\u003eOrganic Nitrogen Fertiliser\u003c\/a\u003e (plant-based amino-acid nitrogen) when the job is a nitrogen correction.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq8\"\u003eCan I use one bag on tomatoes, roses and mixed veg?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes for leaf crops, brassicas, herbs, salads and a mixed border. Tomatoes, cucumbers, peppers and chillies are usually better on their own crop packs once fruiting. Roses want a spring feed and a post-flush feed, not the every-3–4-weeks cadence of hungry veg. Feeding detail for beds vs pots is on this page’s rate table.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq9\"\u003eHow often should I apply this versus a liquid feed?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eGranular All Purpose is the base feed: work in at planting or top-dress about every \u003cstrong\u003e4–6 weeks\u003c\/strong\u003e in beds (\u003cstrong\u003e3–4 weeks\u003c\/strong\u003e in hungry pots) through the growing season, then stop when growth slows. Liquids suit a mid-season top-up when a pot looks hungry — they act faster and fade faster.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq10\"\u003eIs it safe around children, pets and bees?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eTreat it as a sealed store-cupboard fertiliser: keep the bag sealed and out of pets' reach, keep it off play surfaces, and wash hands after handling. It contains bone meal, which dogs find very tempting and will dig for. Work it into the soil rather than leaving it on the surface, keep dogs off newly fed beds, and if a dog eats a quantity call your vet. Watering in alone does not remove that risk. Avoid creating dust clouds near hives on windy days.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq11\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq11\"\u003eIs this the same as your old Veg 4-4-4?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNot quite — it's the successor to Veg 4-4-4 rather than an identical relaunch. We kept the balanced 4-4-4 ratio that growers liked and reformulated it as a true all-purpose feed, with some different ingredients chosen to suit the whole garden rather than leafy growth alone.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ap-faq12\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ap-faq12\"\u003eHow is it different from your Fruit \u0026amp; Vegetable 4-5-6?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eFruit \u0026amp; Veg 4-5-6 has extra phosphorus and potash tuned for fruiting and cropping edibles. All Purpose 4-4-4 is fully balanced for the whole garden — leaf, root and flower alike — so it suits everything from flower borders to the veg patch from a single bag. Choose 4-4-4 as your general feed; add 4-5-6 or a potash feed to push a specific fruiting crop.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"1.5kg","offer_id":37609415835835,"sku":"DF-ALLPURPOSE-1.5","price":12.0,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":37609415868603,"sku":"DF-ALLPURPOSE-4","price":24.5,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":37609415901371,"sku":"DF-ALLPURPOSE-9","price":46.0,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":37609415934139,"sku":"DF-ALLPURPOSE-15","price":63.0,"currency_code":"GBP","in_stock":true},{"title":"30kg","offer_id":41834054123707,"sku":"DF-ALLPURPOSE-30","price":125.25,"currency_code":"GBP","in_stock":true},{"title":"60kg","offer_id":58357284340086,"sku":"DF-ALLPURPOSE-60","price":238.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/all_purpose_4-4-4.png?v=1786553590"},{"product_id":"sulphate-of-potash","title":"Sulphate of Potash | 50% K2O","description":"\u003c!-- Dr Forest — Sulphate of Potash Product Page — Design System v1.0 (granulate only) --\u003e\n\u003c!-- Prefix: sp --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; 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}\n\n  \/* CALLOUTS *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); border-left: 3px solid var(--drf-gold); padding: 1.1em 1.3em; margin: 1.2em 0; }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark p { color: #e8f0eb; }\n  .drf-callout-dark strong { color: #ffffff; }\n\n  \/* MECHANISM CARDS *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1em; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* RATE CARDS *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* STEPS *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid var(--drf-border); }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; border-radius: 0; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.95em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* USE-CASE LIST *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* COMPARISON BOXES *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* PULL QUOTE *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 1.3em; color: var(--drf-grn); text-align: center; line-height: 1.4; max-width: 90%; margin: 1.4em auto; padding: 0.8em 0; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); }\n\n  \/* FAQ *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 500; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border-radius: 0; border: 1px solid var(--drf-gold); background: var(--drf-white); display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 700px; }\n\n  \/* REFERENCES *\/\n  .drf-refs { font-size: 0.78em; color: var(--drf-muted); line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n\n  \/* HAIRLINE RULE *\/\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.5em auto; }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput checked id=\"drf-sp-tab1\" name=\"drf-sp-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-sp-tab2\" name=\"drf-sp-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-sp-tab3\" name=\"drf-sp-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-sp-tab4\" name=\"drf-sp-tabset\" type=\"radio\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-sp-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-sp-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-sp-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-sp-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-sp-panel1\"\u003e\n\u003ch2\u003eOrganic sulphate of potash — 50% K₂O chloride-free potassium \u0026amp; 18% sulphur\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003e50% K₂O Potash\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e18% Sulphur\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eChloride-Free\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eLow Salt Index\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eCertified Organic Input\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eRecyclable Packaging\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.drforest.co.uk\/products\/sulphate-of-potash\"\u003eDr Forest Sulphate of Potash\u003c\/a\u003e is a chloride-free potassium fertiliser (50% K₂O plus 18% sulphur) used as a high potash feed for fruit, flowers and roots, at 20 to 50 g\/m² on beds or 2 to 6 g per 10-litre pot. Potassium drives sugar transport, fruit ripening, flower colour, drought tolerance and disease resistance. Most budget potash supplies it as potassium chloride, which builds up in soil and damages sensitive crops. Dr Forest's is naturally mined potassium sulphate (K₂SO₄), a naturally mined mineral salt of the kind permitted in organic growing, and handmade in small batches in Stockport.\u003c\/p\u003e\n\u003cp\u003eAt 50% K₂O and 18% sulphur this isn't a diluted compound or a blend — it's pure potassium sulphate in a uniform granulate that spreads evenly and dissolves on contact with soil moisture. Two essential macronutrients, immediately available, with no chloride, no nitrogen and no phosphorus to upset a carefully balanced feeding programme.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e50%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eK₂O (Potash)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e18%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSulphur (S)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e0%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eChloride\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e0-0-50\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNPK Analysis\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat sulphate of potash is used for in the garden\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruiting and flowering crops\u003c\/strong\u003e — potassium regulates sugar transport, speeds ripening and intensifies flower colour; essential for tomatoes, strawberries, peppers, roses and all fruiting plants\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlavour and quality\u003c\/strong\u003e — research consistently links potassium sulphate to higher soluble sugars, vitamin C and dry matter than untreated controls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChloride-sensitive crops\u003c\/strong\u003e — berries, grapes, potatoes, tomatoes, citrus and salad crops all perform better on a sulphate-based source that avoids chloride build-up\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrought and frost resistance\u003c\/strong\u003e — potassium controls stomatal opening and cell turgor, cutting water loss and improving survival in temperature extremes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisease resistance\u003c\/strong\u003e — adequate potassium strengthens cell walls and activates plant defence enzymes, lowering susceptibility to fungal and bacterial problems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulphur supply\u003c\/strong\u003e —  18% sulphur supports amino acid synthesis, chlorophyll production and nitrogen use; particularly important for brassicas and alliums\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLawns and turf\u003c\/strong\u003e — potassium hardens turf for winter and improves drought tolerance and spring green-up without an excess-nitrogen flush\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalancing NPK feeds\u003c\/strong\u003e — zero nitrogen and zero phosphorus make it ideal for lifting the K of any feeding programme without touching the N or P\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy sulphate of potash instead of muriate of potash?\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eSulphate of potash (K₂SO₄) — this product\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e50% K₂O — high-concentration, chloride-free potassium\u003c\/li\u003e\n\u003cli\u003e18% sulphur — a second essential macronutrient in every application\u003c\/li\u003e\n\u003cli\u003eAlmost zero chloride — safe for sensitive fruit and veg\u003c\/li\u003e\n\u003cli\u003eLow salt index — minimal osmotic stress on roots\u003c\/li\u003e\n\u003cli\u003eNaturally mined, permitted in organic growing\u003c\/li\u003e\n\u003cli\u003eSulphate-S improves nitrogen uptake efficiency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eMuriate of potash (KCl)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e60% K₂O — more potassium per kg, but at a cost\u003c\/li\u003e\n\u003cli\u003e47% chloride — accumulates in soil and the root zone over time\u003c\/li\u003e\n\u003cli\u003eNo sulphur — delivers a single nutrient\u003c\/li\u003e\n\u003cli\u003eHigher salt index — greater risk of root burn and osmotic stress\u003c\/li\u003e\n\u003cli\u003eLinked to lower starch, dry matter and vitamin C in potatoes (Koch et al., 2022)\u003c\/li\u003e\n\u003cli\u003ePoorly suited to containers and tunnels where leaching is limited\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eHandcrafted in Stockport\u003c\/span\u003e\n\u003cp\u003eEvery Dr Forest product is made by hand in small batches at our workshop in Stockport, Greater Manchester. Recyclable packaging throughout, ingredients chosen for quality rather than cost, and no slaughterhouse by-products in this product.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-sp-panel2\"\u003e\n\u003ch2\u003eThe science of potassium and sulphur in plant nutrition\u003c\/h2\u003e\n\u003ch3\u003ePotassium: the quality nutrient\u003c\/h3\u003e\n\u003cp\u003ePotassium is the most abundant cation in plant tissue and the single most important nutrient for fruit quality. It never becomes part of an organic molecule — instead it works as a free ion, regulating water pressure, activating over 60 enzymes, balancing electrical charge and moving sugars from leaves into developing fruit. Plants short of potassium produce smaller, blander fruit with poorer shelf life and weaker resistance to disease and stress.\u003c\/p\u003e\n\u003cp\u003eUnlike nitrogen, which drives leafy growth and is easily over-applied, potassium can't really be made excessive in a practical garden. It is the nutrient most often under-supplied in container growing and intensive vegetable production.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003ePotassium decides size, flavour and shelf life — not just yield.\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eWhy the potassium source matters\u003c\/h3\u003e\n\u003cp\u003eRoughly 96% of the world's potassium fertiliser is sold as potassium chloride, or muriate of potash. It's cheap and concentrated. But the chloride ion it carries isn't inert — it accumulates in soil, raises salinity and damages sensitive crops directly. The choice between chloride and sulphate as the accompanying anion has measurable consequences for crop quality.\u003c\/p\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003ePotato quality — starch, sugars \u0026amp; vitamin C\u003c\/h4\u003e\n\u003cp\u003eA two-year field trial by Koch et al. (2022) compared K₂SO₄ and KCl on two potato cultivars. Potassium sulphate held higher starch and ascorbic acid (vitamin C), while KCl-treated tubers built up more reducing sugars in storage — the precursors to acrylamide during cooking. The KCl treatment also carried more lipid-derived off-flavour compounds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eFruit weight \u0026amp; soluble solids\u003c\/h4\u003e\n\u003cp\u003eIn pineapple, swapping KCl for K₂SO₄ at 20% less total potassium produced larger fruit and better bromatological quality, including total soluble solids and vitamin C (Arias-Vázquez et al., 2018). The sulphate-fed plants won on less total potassium — source matters as much as quantity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eChloride accumulation \u0026amp; root-zone salinity\u003c\/h4\u003e\n\u003cp\u003ePotassium sulphate adsorbs to soil particles more strongly than KCl, so it leaches less (Tisdale et al., 1999). In containers, where leaching is limited, that matters. Chloride from KCl accumulates in the root zone, raising osmotic potential and reducing water uptake. Sulphate ions don't carry that risk.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eSulphur, the fourth macronutrient\u003c\/h4\u003e\n\u003cp\u003eSulphur is essential for the amino acids cysteine and methionine — without them protein synthesis stalls. It's a structural part of coenzyme A and thiamine and is needed for chlorophyll. Sulphur deficiency caps nitrogen efficiency: adding N to a sulphur-short soil gives diminishing returns. Every application here delivers 18% S alongside the potassium.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003ePotassium \u0026amp; disease resistance\u003c\/h4\u003e\n\u003cp\u003eAdequate potassium thickens cell walls, increases cuticle wax and activates pathogenesis-related (PR) proteins. Potassium-sufficient plants show fewer fungal problems including powdery mildew, botrytis and fusarium wilt. The mechanism is mostly physical — stronger walls are harder for fungal hyphae to penetrate — backed by faster enzymatic defence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003ePotassium \u0026amp; water regulation\u003c\/h4\u003e\n\u003cp\u003ePotassium is the main ion controlling stomatal aperture. When it's adequate, guard cells close stomata quickly under water stress to cut transpiration — which makes potassium the single most important nutrient for drought tolerance. Well-supplied plants also recover faster from frost, since potassium lowers the freezing point of cell sap and protects membranes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eKoch, M. et al. (2022). Comparison of the effects of potassium sulphate and potassium chloride fertilisation on quality parameters of potato tubers. \u003cem\u003eFrontiers in Plant Science\u003c\/em\u003e, 13, 920212.\u003c\/li\u003e\n\u003cli\u003eArias-Vázquez, E.L. et al. (2018). Effects of potassium chloride and potassium sulphate on 'MD-2' pineapple fruit yield and quality. \u003cem\u003eActa Horticulturae\u003c\/em\u003e.\u003c\/li\u003e\n\u003cli\u003eTisdale, S.L. et al. (1999). \u003cem\u003eSoil Fertility and Fertilizers\u003c\/em\u003e. 5th ed. Prentice Hall.\u003c\/li\u003e\n\u003cli\u003eMengel, K. \u0026amp; Kirkby, E.A. (2001). \u003cem\u003ePrinciples of Plant Nutrition\u003c\/em\u003e. 5th ed. Kluwer Academic.\u003c\/li\u003e\n\u003cli\u003eSharma, U.C. \u0026amp; Sud, K.C. (2001). Effect of potassium sources on potato yield and quality in acidic and alluvial soils. \u003cem\u003eJ. Indian Potato Assoc.\u003c\/em\u003e, 28, 70–71.\u003c\/li\u003e\n\u003cli\u003eKumar, P. et al. (2004). Effect of sulphate and muriate of potash on quality of potato. \u003cem\u003eAnnals of Agricultural Research\u003c\/em\u003e, 25(3).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-sp-panel3\"\u003e\n\u003ch2\u003eHow to use sulphate of potash: application rates \u0026amp; guide\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eMeasuring \u0026amp; spreading\u003c\/span\u003e\n\u003cp\u003eA level teaspoon of granulate is roughly \u003cstrong\u003e5g\u003c\/strong\u003e. The granules are free-flowing — broadcast by hand or spreader, top-dress around plants, or stir into compost and potting mixes. Always water in after a soil application so the potassium reaches the root zone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication rates — soil\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSoil mix — potting and container preparation\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–2g per litre of compost  |  \u003cstrong\u003eWhen:\u003c\/strong\u003e at planting\u003c\/div\u003e\n\u003cp\u003eMix thoroughly through compost or potting soil before planting. Provides baseline potassium and sulphur for the first 4–6 weeks. Ideal for tomatoes, peppers, strawberries and other fruiting crops.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTop dressing — established containers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 2–6g per 10-litre pot  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e every 4–6 weeks in the growing season\u003c\/div\u003e\n\u003cp\u003eScatter granules evenly over the soil surface and water in well. Use the higher rate for heavy-fruiting crops at peak production. Work lightly into the top centimetre of soil where you can.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eOutdoor beds and borders\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 20–50g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e every 6–12 weeks, spring to autumn\u003c\/div\u003e\n\u003cp\u003eBroadcast evenly across the soil surface and water in. Lower rate for maintenance; higher rate for heavy-fruiting crops, new plantings, or where soil potassium is known to be low.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawns and turf\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 20–35g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e twice a year — spring and autumn\u003c\/div\u003e\n\u003cp\u003eApply in spring for active growth and in autumn to harden turf for winter. Water in immediately. Potassium improves drought tolerance, wear resistance and winter colour.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eDissolving for liquid feed\u003c\/h3\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eGranulate dissolves more slowly\u003c\/span\u003e\n\u003cp\u003eThe granulate is fully water-soluble, but it dissolves more slowly than a fine grade. Stir well, or dissolve in warm water and leave to stand for a few minutes before topping up. For a foliar spray, dissolve completely and strain through fine mesh first to protect your sprayer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLiquid feed \/ fertigation — root drench\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–2g per litre of water  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e weekly to fortnightly during fruiting\/flowering\u003c\/div\u003e\n\u003cp\u003eDissolve, then apply at the base of the plant. Ideal for topping up potassium when demand peaks. Lower rate for maintenance, higher rate when plants are in full production.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFoliar spray\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 5–10g per litre of water  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e every 2 weeks during fruiting\u003c\/div\u003e\n\u003cp\u003eApply to both leaf surfaces in early morning or late evening. Foliar potassium is absorbed quickly and can ease deficiency within days. Dissolve fully and strain before spraying.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eOn fruit trees and soft fruit\u003c\/h3\u003e\n\u003cp\u003eFruit needs potash to colour, sweeten and ripen, and to firm up its wood for winter. It needs far less per square metre than a vegetable bed, though. \u003cstrong\u003eFeed fruit once a year\u003c\/strong\u003e, not every 6–12 weeks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen:\u003c\/strong\u003e once a year in late winter or early spring (February to early April), as the buds begin to swell.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow:\u003c\/strong\u003e scatter it evenly over the ground under the branches, out to the branch tips, or along the row for cane fruit and strawberries. Keep it 30 cm from tree trunks, and off the stems of bushes, canes and strawberries. Water it in, or put it down just before rain. For trees growing in grass, clear a circle of turf first, or the grass takes the potash.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUsed on its own\u003c\/strong\u003e (no other fruit feed), per m² of ground under the branches or along the row:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApples:\u003c\/strong\u003e none without a soil test. Only use it if a test shows low potash: 44 g at Index 0 (low), 30 g at Index 1. None at Index 2, or at Index 3 or above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePears:\u003c\/strong\u003e 30 g with no soil test. With a test: 58 g at Index 0 (low), 44 g at Index 1, 30 g at Index 2, 14 g at Index 3 or above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlums, cherries:\u003c\/strong\u003e 20 g with no soil test. With a test: 44 g at Index 0 (low), 30 g at Index 1, 16 g at Index 2, none at Index 3 or above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaspberries, blackcurrants, redcurrants, gooseberries:\u003c\/strong\u003e 30 g with no soil test. With a test: 50 g at Index 0 (low), 36 g at Index 1, 24 g at Index 2, 12 g at Index 3 or above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlackberries and hybrid berries, strawberries:\u003c\/strong\u003e 20 g with no soil test. With a test: 44 g at Index 0 (low), 30 g at Index 1, 16 g at Index 2, none at Index 3 or above.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTopping up a general fruit feed\u003c\/strong\u003e (such as All Purpose 4-4-4 or Fruit \u0026amp; Vegetable 4-5-6): raspberries, currants and gooseberries need only \u003cstrong\u003e10 g per m²\u003c\/strong\u003e on average soil, or up to \u003cstrong\u003e25 g per m²\u003c\/strong\u003e where a soil test shows low potash.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eA level teaspoon holds about 5 g and a level tablespoon about 15 g. A plum tree 2 m across covers about 3 m², so it needs about 60 g, or 4 level tablespoons.\u003c\/em\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApples:\u003c\/strong\u003e more isn't better. Too much potash makes bitter pit (brown, corky spots in the flesh) more likely, shortens storage and crowds out magnesium. That's why apples only get it on soil tested low in potash. If older leaves yellow between the veins, use Kieserite rather than more potash.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn soil already at Index 2 or above\u003c\/strong\u003e, you can give a double dose every other year instead of a single dose every year.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanting new fruit:\u003c\/strong\u003e only add potash before planting if a soil test shows it's low. Use 40 g\/m² at Index 0 or 20 g\/m² at Index 1, forked through the whole bed in autumn. Don't put it in the planting hole; concentrated potash can scorch new roots.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruit in pots:\u003c\/strong\u003e mix 1–2 g per litre into the compost at potting. Then give 2–4 g per 10 litres of compost every 4–6 weeks from flowering, watered in. Stop by early July for trees; strawberries can carry on to the end of picking. Figs in pots get just two of these doses, in April and late May, and nothing after midsummer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFigs in the ground\u003c\/strong\u003e fruit best on lean soil. A fig with its roots restricted (in a lined planting pit) can have one light dressing of 5–10 g per tree (1–2 level teaspoons) in March–April. A fig growing unrestricted in mulched soil needs nothing unless growth is weak (less than about 30 cm of new shoot a year). Give a fig only one spring feed, this or a general fruit feed, and never feed after midsummer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrawberries, raspberries, redcurrants and gooseberries\u003c\/strong\u003e are sensitive to chloride. Sulphate of potash is the potash form fruit growers use for them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlueberries\u003c\/strong\u003e are sensitive to salts. Don't add it at planting. On an established bush, only use it if a soil test shows low potash, and then no more than 15 g per m².\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-step\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eIdentify your potassium need.\u003c\/strong\u003e Fruiting and flowering crops have the highest demand. Scorched leaf edges, poor fruit set and weaker disease resistance are classic deficiency signs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure the rate.\u003c\/strong\u003e Use the rates above as a starting guide — a level teaspoon of granulate is about 5g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply and water in.\u003c\/strong\u003e For soil, scatter evenly and water thoroughly. For liquid feeding, dissolve fully before applying. Watering in moves potassium into the root zone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime it to demand.\u003c\/strong\u003e Potassium demand peaks through flowering and fruit development. Start when the first flowers appear and carry on to harvest.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003ePair with Dr Forest crop feeds — \u003cstrong\u003eTomato\u003c\/strong\u003e, \u003ca href=\"\/products\/organic-rose-fertiliser\"\u003eRose \u0026amp; Flower\u003c\/a\u003e and \u003ca href=\"\/products\/organic-fruit-vegetable-fertiliser\"\u003eFruit \u0026amp; Vegetable\u003c\/a\u003e — where extra potassium is wanted during peak fruiting. Combine with \u003cstrong\u003eSeaweed\u003c\/strong\u003e for biostimulant activity and \u003cstrong\u003eCal-Mag\u003c\/strong\u003e where calcium is also needed. Zero nitrogen means it won't disturb bloom-phase ratios.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eFurther reading\u003c\/span\u003e\n\u003cp\u003eNew to potassium minerals? See our guide to \u003ca href=\"\/products\/polyhalite\"\u003epolyhalite\u003c\/a\u003e, a multi-nutrient potassium mineral, and \u003ca href=\"\/blogs\/the-dr-forest-blog\/why-are-my-tomato-leaves-turning-yellow\"\u003ewhy tomato leaves turn yellow\u003c\/a\u003e — often a potassium or magnesium signal.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-sp-panel4\"\u003e\n\u003ch2\u003eFrequently asked questions about sulphate of potash\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq1\"\u003eWhat is the difference between sulphate of potash and muriate of potash?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eBoth deliver potassium, but the accompanying ion differs. Muriate of potash (potassium chloride) carries 47% chloride, which can accumulate in soil and damage sensitive crops. Sulphate of potash is almost chloride-free and adds 18% sulphur. For container growing, tunnel crops and chloride-sensitive plants like tomatoes, strawberries and potatoes, sulphate of potash is the safer, better-quality choice.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq2\"\u003eIs sulphate of potash suitable for organic growing?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. This sulphate of potash is a naturally mined crude mineral salt of the kind permitted in organic growing, with no synthetic processing and no chemical additives. If you grow under a certification scheme, check it against your scheme's input rules.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq3\"\u003eWhen should I apply sulphate of potash?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003ePotassium demand peaks through flowering and fruiting — begin when the first flowers appear and continue to harvest. For lawns, apply in spring and autumn. For general soil maintenance, once or twice in the growing season. Leaf-edge scorching, poor fruit set or rising disease are deficiency signs that warrant an immediate application.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq4\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq4\"\u003eHow much sulphate of potash should I use?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eAs a guide: 1–2g per litre when mixing into compost, 2–6g per 10-litre pot as a top dressing every 4–6 weeks, 20–50g per m² on outdoor beds, and 20–35g per m² on lawns. A level teaspoon of granulate is roughly 5g. Start at the lower end and increase for heavy-fruiting crops.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq5\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq5\"\u003eCan I dissolve the granulate in water?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. Potassium sulphate is water-soluble, though the granulate dissolves more slowly than a fine grade. Stir well, or dissolve in warm water and let it stand for a few minutes. For foliar spraying, dissolve completely and strain through fine mesh first to protect your sprayer. For most gardeners, applying to the soil and watering in is the simplest route.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq6\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq6\"\u003eWill it burn my plants?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eSulphate of potash has a low salt index compared with muriate of potash, so it's much less likely to scorch roots. Apply at the recommended rates, water in afterwards and keep granules off stems. At normal garden rates the risk is very low.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq7\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq7\"\u003eHow is sulphate of potash different from tomato feed?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eMost liquid tomato feeds are balanced NPK fertilisers with nitrogen, phosphorus and potassium together. Sulphate of potash is a \u003cem\u003esingle-nutrient supplement\u003c\/em\u003e — only potassium and sulphur. That makes it ideal for lifting potassium on its own, without adding nitrogen (which pushes leafy growth at the expense of fruit) or phosphorus.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq8\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq8\"\u003eWhat crops benefit most from sulphate of potash?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eAll fruiting and flowering crops: tomatoes, peppers, chillies, strawberries, raspberries, grapes, courgettes, cucumbers, roses, dahlias and sweet peas. Root crops like potatoes and carrots benefit too, since potassium improves starch and storage quality. Brassicas and alliums make particular use of the sulphur.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq9\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq9\"\u003eCan I use it alongside Dr Forest fertilisers?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. It pairs naturally with any Dr Forest blend where extra potassium is wanted — usually at peak fruiting or flowering. With zero nitrogen and zero phosphorus, it won't disturb the NPK ratio of your base feed. Many growers run a crop-specific fertiliser as the base and add sulphate of potash as a targeted booster during heavy production.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq10\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sp-faq10\"\u003eHow should I store sulphate of potash?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eKeep it cool and dry in the sealed bag. Potassium sulphate isn't hygroscopic under normal conditions, so it won't draw in moisture and clump if kept sealed. Stored properly, shelf life is effectively indefinite — it's a stable mineral salt.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-sp-faq-paa1\" class=\"drf-faq-q\"\u003eWhich plants don't like potash, and can I use it on everything?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eVery few plants are harmed by potash at sensible rates, but not every plant needs extra. Leafy crops such as lettuce, spinach and cabbage, and lawns in spring, want nitrogen more than potassium. Acid-loving shrubs are fine with sulphate of potash, which doesn't raise pH, unlike wood ash. The real risk is overdoing it: too much potassium makes it harder for plants to take up magnesium and calcium, especially in pots and sandy soils. Keep it for flowering and fruiting crops, at 20–50 g per m² on beds, and don't stack it on top of a high-potash feed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-sp-faq-paa2\" class=\"drf-faq-q\"\u003eWhere can I buy sulphate of potash in the UK?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eHere. This is 50% K₂O sulphate of potash, packed in Stockport in 500 g, 1.5 kg, 4 kg, 9 kg, 15 kg and 36 kg bags and posted to any UK address. When you compare bags, check the potash figure (50% K₂O is the standard for a pure product) and make sure it's sulphate, not muriate (chloride) of potash, which carries chloride you don't want around tomatoes, fruit and potatoes.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sp-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-sp-faq-paa3\" class=\"drf-faq-q\"\u003eHow long does sulphate of potash last in the soil?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eIt's water-soluble, so it's available to roots within days of watering in, and a dressing carries a bed for roughly six to twelve weeks. How long it lasts depends on the soil. Clay and soils rich in organic matter hold potassium well; light sandy soils let it wash down in a wet winter. That's why the rate here is 20–50 g per m² every 6–12 weeks from spring to autumn, rather than one big dose. In pots, top-dress 2–6 g per 10-litre pot every 4–6 weeks. There's little point applying it in late autumn for next year.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"500g","offer_id":53587298615670,"sku":"DF-SOP-500G","price":6.25,"currency_code":"GBP","in_stock":true},{"title":"1.5kg","offer_id":37684919992507,"sku":"DF-SOP-1.5","price":11.0,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":37684920025275,"sku":"DF-SOP-4","price":21.99,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":37684920090811,"sku":"DF-SOP-9","price":40.0,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":44740949409979,"sku":"DF-SOP-15","price":60.0,"currency_code":"GBP","in_stock":true},{"title":"36kg","offer_id":57119511740790,"sku":"DF-SOP-36","price":117.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/parent-sop.jpg?v=1791377914"},{"product_id":"organic-fruit-vegetable-fertiliser","title":"Fruit \u0026 Vegetable Fertiliser (Veg Feed) 4-5-6","description":"\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; 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}\n    .drf-tab-labels label { flex: 1 1 33.333%; white-space: nowrap; }\n  }\n  .drf-panel { display: none; }\n  #drf-fv-tab1:checked ~ .drf-tab-labels label[for=\"drf-fv-tab1\"],\n  #drf-fv-tab2:checked ~ .drf-tab-labels label[for=\"drf-fv-tab2\"],\n  #drf-fv-tab3:checked ~ .drf-tab-labels label[for=\"drf-fv-tab3\"],\n  #drf-fv-tab4:checked ~ .drf-tab-labels label[for=\"drf-fv-tab4\"],\n  #drf-fv-tab5:checked ~ .drf-tab-labels label[for=\"drf-fv-tab5\"],\n  #drf-fv-tab6:checked ~ .drf-tab-labels label[for=\"drf-fv-tab6\"] { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 700; }\n  #drf-fv-tab1:checked ~ .drf-panels #drf-fv-panel1,\n  #drf-fv-tab2:checked ~ .drf-panels #drf-fv-panel2,\n  #drf-fv-tab3:checked ~ .drf-panels #drf-fv-panel3,\n  #drf-fv-tab4:checked ~ .drf-panels #drf-fv-panel4,\n  #drf-fv-tab5:checked ~ .drf-panels #drf-fv-panel5,\n  #drf-fv-tab6:checked ~ .drf-panels #drf-fv-panel6 { display: block; }\n\n  \/* ── CALLOUTS (square; light \/ gold \/ dark) ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); color: var(--drf-cream); border-left-color: var(--drf-gold); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout-dark a { color: var(--drf-cream); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n\n  \/* ── PULL QUOTE ── *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; 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}\n  .drf-ing p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── MECHANISM CARDS ── *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; 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display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST (1px hairline borders, alternating gold \/ green) ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* ── COMPARISON BOXES (stack vertically) ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003c!-- ===== 6-TAB BODY (Overview \/ Ingredients \/ How to Use \/ Growing Guide \/ The Science \/ FAQ) ===== --\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-fv-tabset\" id=\"drf-fv-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-fv-tabset\" id=\"drf-fv-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-fv-tabset\" id=\"drf-fv-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-fv-tabset\" id=\"drf-fv-tab4\"\u003e \u003cinput type=\"radio\" name=\"drf-fv-tabset\" id=\"drf-fv-tab5\"\u003e \u003cinput type=\"radio\" name=\"drf-fv-tabset\" id=\"drf-fv-tab6\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-fv-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-fv-tab2\"\u003eIngredients\u003c\/label\u003e \u003clabel for=\"drf-fv-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-fv-tab4\"\u003eGrowing Guide\u003c\/label\u003e \u003clabel for=\"drf-fv-tab5\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-fv-tab6\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-fv-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eFruit and vegetable fertiliser 4-5-6 — 19 ingredients, potash-led for fruit, roots and pods\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003e4-5-6 NPK\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e19 Ingredients\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eHigh Potash\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eFast \u0026amp; Slow Release\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eFull Ingredient Transparency\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003eHandcrafted in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eDr Forest Fruit \u0026amp; Vegetable Fertiliser is a premium 4-5-6 slow-release organic fertiliser for the kitchen garden: tomatoes, peppers, courgettes, root crops, beans and soft fruit.\u003c\/strong\u003e Potassium leads the ratio for fruit quality, and nitrogen is kept moderate so plants crop rather than run to leaf. Made with organic ingredients and natural minerals, it is blended by hand in small batches in Stockport, with all 19 ingredients listed.\u003c\/p\u003e\n\u003cp\u003eIt is an organic plant food for vegetables and fruit, made for people growing their own organic food on an allotment, in raised beds or in grow bags by the back door. The mineral fraction works within days of watering in, while the plant meals, polyhalite and rock phosphate release for weeks after. Of our \u003ca href=\"\/collections\/organic-fertilisers\"\u003eorganic fertilisers\u003c\/a\u003e, this is the all-rounder for edible crops.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e4-5-6\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNPK ratio\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e19\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eIngredients\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e6.2%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCalcium\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e5.4%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSulphur\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat it does across your kitchen garden\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotash for fruit quality\u003c\/strong\u003e — chloride-free potassium from sulphate of potash and Yorkshire polyhalite, the nutrient most tied to sweetness and colour.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium all season\u003c\/strong\u003e — 6.2% calcium from five of the ingredients. Watering still decides whether it reaches the fruit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhosphorus for roots and flowers\u003c\/strong\u003e — a quick-release phosphorus meal, with rock phosphate as the slow reserve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnesium for green leaves\u003c\/strong\u003e — three sources, fast to slow, for heavy croppers whose leaves yellow between the veins in midsummer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNitrogen in proportion\u003c\/strong\u003e — enough for steady growth, not so much that tomatoes and beans run to leaf.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter soil each year\u003c\/strong\u003e — British biochar, humic and fulvic acid, clay and Scottish seaweed go in with every feed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDr Forest Fruit \u0026amp; Vegetable vs a liquid tomato feed\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eDr Forest Fruit \u0026amp; Vegetable 4-5-6 — dry, slow-release blend\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e19 ingredients, every one named on this page\u003c\/li\u003e\n\u003cli\u003eCalcium, magnesium and sulphur alongside the NPK\u003c\/li\u003e\n\u003cli\u003eA top-dressing every 4–6 weeks for most crops\u003c\/li\u003e\n\u003cli\u003eAdds biochar, humic acid, clay and seaweed to the soil\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eTypical liquid tomato feed — soluble concentrate\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNPK, often with magnesium; calcium is rarely on the label\u003c\/li\u003e\n\u003cli\u003eDiluted in the can, usually weekly once fruit sets\u003c\/li\u003e\n\u003cli\u003eAvailable at once; what the roots miss drains away\u003c\/li\u003e\n\u003cli\u003eAdds nothing to the soil itself\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003eFor what goes into the best-known brands, see \u003ca href=\"\/blogs\/the-dr-forest-blog\/tomorite-vs-dr-forest-tomato-feed-compared\"\u003ewhat is actually in Tomorite\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eHandcrafted in Stockport\u003c\/span\u003e\n\u003cp\u003eBlended in small batches in Stockport, Greater Manchester, and packed in compostable packaging. Dr Forest is named after Joe's grandfather, Dr Forrest, a GP in a Lancashire mining town near Preston who kept a back-garden plot for the runner beans he turned into piccalilli for family and friends. For the thinking behind feeding the soil as well as the plant, read \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-living-soil\"\u003ewhat living soil is\u003c\/a\u003e. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 2 — INGREDIENTS ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-fv-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eWhat's Inside\u003c\/span\u003e\n\u003ch2\u003eAll 19 ingredients — what each one does for fruit and vegetables\u003c\/h2\u003e\n\u003cp\u003eA multi-input formula, with every input listed. The main plant meals come from Cambridgeshire, the polyhalite from North Yorkshire and the seaweed from Scotland; the biochar is British. Blend shares are shown where we publish them.\u003c\/p\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e01\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e28% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eNitrogen plant extract — Cambridgeshire, slow release\u003c\/h4\u003e\n\u003cp\u003ePlant protein concentrate at 12% N, 3% P₂O₅ and 4% K₂O: the main nitrogen source, released over six to eight weeks as microbes break it down.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e02\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e15% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003ePhosphorous rich plant meal — Cambridgeshire, fast release\u003c\/h4\u003e\n\u003cp\u003eA calcined plant meal at around 15% P₂O₅ and 9% CaO. The quicker phosphorus source, for rooting after transplanting and for flowering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e03\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e50–60 day release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eYorkshire polyhalite — North Yorkshire, slow release\u003c\/h4\u003e\n\u003cp\u003eOne mineral carrying 14% K₂O, 17% CaO, 6% MgO and 48% SO₃, mined 1,200 metres below the North Sea. It dissolves more slowly than sulphate of potash, extending supply by 50–60 days. See \u003ca href=\"\/products\/polyhalite\"\u003eour polyhalite guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e04\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eImmediate release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eSulphate of potash — mineral, immediate release\u003c\/h4\u003e\n\u003cp\u003e50% K₂O and chloride-free. The fast potassium, covering the crop until the slower polyhalite supply builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e05\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003e8% of blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eGypsum (calcium sulphate) — mineral, fast release\u003c\/h4\u003e\n\u003cp\u003e23.3% calcium and 18.6% sulphur in soluble form. Calcium can't be moved from older leaves into fruit, so the soil has to supply it all through fruiting, and gypsum does so without raising pH.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e06\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow reserve\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eMicronised rock phosphate — mineral, slow reserve\u003c\/h4\u003e\n\u003cp\u003e31% P₂O₅ and rich in calcium; it dissolves slowly, so it is still releasing phosphorus as the last fruit swells.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e07\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eRapeseed meal — British, slow release\u003c\/h4\u003e\n\u003cp\u003eA high-protein plant meal that microbes break down over six to eight weeks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e08\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003ePermanent\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eClay minerals — British, permanent\u003c\/h4\u003e\n\u003cp\u003eMontmorillonite and illite clays hold potassium, calcium and magnesium against leaching and release them to roots, which matters most in pots and grow bags.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e09\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eMealworm frass — sustainably reared\u003c\/h4\u003e\n\u003cp\u003eDroppings and shed skins from mealworm rearing: a little slow-release nitrogen and phosphorus, plus chitin, which may stimulate beneficial soil microbes (Barragán-Fonseca et al., 2022).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e10\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eTraditional blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eHerbal mixture — comfrey, nettle, yarrow and chamomile\u003c\/h4\u003e\n\u003cp\u003eDried herbs from the allotment tradition; comfrey is the classic British potash plant. Research on each herb alone is thin, so we claim no more than that.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e11\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eStructural\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eSilica meal — mineral, structural\u003c\/h4\u003e\n\u003cp\u003ePlants take up silicon in amounts comparable to calcium and magnesium, and plants short of it are often structurally weaker (Epstein, 1999).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e12\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eBiostimulant\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eSeaweed extracts — British coastal, biostimulant\u003c\/h4\u003e\n\u003cp\u003eA concentrated extract, there for its growth-regulating compounds (cytokinins, auxins and betaines among them) rather than its nutrients (Khan et al., 2009).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e13\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eLiving culture\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eEM microorganisms — living culture\u003c\/h4\u003e\n\u003cp\u003eA mixed culture of beneficial bacteria, yeasts, actinomycetes and lactic acid bacteria.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e14\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eAlfalfa meal — plant meal, slow release\u003c\/h4\u003e\n\u003cp\u003eAbout 2.5% N and 1.4% Ca. The growth-promoting substance in alfalfa meal was identified as triacontanol, a natural plant growth regulator (Ries et al., 1977). More on \u003ca href=\"\/blogs\/the-dr-forest-blog\/alfalfa-meal-organic-fertiliser\"\u003ealfalfa meal\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e15\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSustained release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eMicronised magnesium mineral — mineral, sustained release\u003c\/h4\u003e\n\u003cp\u003e20.9% Mg, the most concentrated magnesium source here, released slowly through the season.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e16\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eImmediate release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eMagnesium sulphate — mineral, immediate release\u003c\/h4\u003e\n\u003cp\u003eWater-soluble magnesium for the early growth spurt, until the slower sources take over.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e17\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eHand-harvested\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eScottish seaweed — hand-harvested\u003c\/h4\u003e\n\u003cp\u003eWhole seaweed from Scottish coastal waters, breaking down over weeks and adding trace elements; results vary with crop and conditions (Craigie, 2011).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e18\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eActivated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eFermented biochar — British, activated\u003c\/h4\u003e\n\u003cp\u003eFermented before blending to charge it with microbes. Its pores hold water and nutrients; pooled trials show a 10% average rise in crop productivity (Jeffery et al., 2011).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e19\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eChelation\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eHumic and fulvic acid — chelation and root growth\u003c\/h4\u003e\n\u003cp\u003eHumic substances make iron and zinc easier for roots to take up, and on average raised shoot and root growth by about a fifth, depending on source and rate (Rose et al., 2014).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-fv-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use fruit and vegetable fertiliser: rates, timing and method\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eDosages calibrated for 4-5-6 NPK\u003c\/span\u003e\n\u003cp\u003eAll g\/m² rates assume even surface incorporation to 2–3cm depth. For new beds, borders or containers being set up for the first time, apply at double the standard rate as an initial base charge and work into the full soil depth before planting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eStep-by-step application\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater first.\u003c\/strong\u003e Make sure the soil or compost is moist before applying. Never apply to bone-dry soil: the mineral fraction needs moisture to dissolve and reach the root zone. If it is very dry, water thoroughly and allow it to drain for 30 minutes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSprinkle evenly over the root zone.\u003c\/strong\u003e Spread it across the full root area, not just at the stem base. For containers, sprinkle across the entire compost surface. Avoid direct contact with leaves, stems and developing fruit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightly fork in.\u003c\/strong\u003e Work it into the top 2–3cm of soil or compost: a finger or small hand fork in pots, a border fork or hoe in open ground (more in \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-top-dress\"\u003ehow to top dress\u003c\/a\u003e). Avoid deep incorporation, because the soil biology is concentrated in the top layer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater in thoroughly.\u003c\/strong\u003e Water within 24 hours of application. In containers, water until it runs freely from the base. In open ground, apply before rain when possible.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eRates by crop\u003c\/h3\u003e\n\u003ch4\u003eFruiting vegetables\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePlant\u003c\/th\u003e\n\u003cth\u003eRate per m²\u003c\/th\u003e\n\u003cth\u003eFrequency \u0026amp; notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTomatoes\u003c\/td\u003e\n\u003ctd\u003e80–120g\u003c\/td\u003e\n\u003ctd\u003eBetter on Tomato Fertiliser 3-4-6. On this bag, from the first truss, every 4–5 weeks. Not every 2 weeks.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeppers \u0026amp; chillies\u003c\/td\u003e\n\u003ctd\u003e75–110g\u003c\/td\u003e\n\u003ctd\u003eBetter on Chilli \u0026amp; Pepper Fertiliser. On this bag, every 4 weeks, and ease off as fruit ripens.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCourgettes \u0026amp; summer squash\u003c\/td\u003e\n\u003ctd\u003e80–120g\u003c\/td\u003e\n\u003ctd\u003eEvery 4–5 weeks. Heavy potassium feeders.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWinter squash \u0026amp; pumpkins\u003c\/td\u003e\n\u003ctd\u003e80–110g\u003c\/td\u003e\n\u003ctd\u003eEvery 5 weeks through to August, then stop to allow hardening and sugaring of the skin before harvest.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCucumbers\u003c\/td\u003e\n\u003ctd\u003e75–100g\u003c\/td\u003e\n\u003ctd\u003eEvery 4 weeks.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRunner \u0026amp; French beans\u003c\/td\u003e\n\u003ctd\u003e55–70g\u003c\/td\u003e\n\u003ctd\u003eOnce, when you prepare the bed. They fix their own nitrogen. A top-dress only if growth is pale.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeas\u003c\/td\u003e\n\u003ctd\u003e30–45g\u003c\/td\u003e\n\u003ctd\u003eOnce, when you prepare the bed. They fix their own nitrogen and rarely need a top-dress.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSweetcorn\u003c\/td\u003e\n\u003ctd\u003e80–110g\u003c\/td\u003e\n\u003ctd\u003eAt planting then every 4 weeks until tassels appear. Reduces to every 6 weeks once silk has been pollinated.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eRoot vegetables\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePlant\u003c\/th\u003e\n\u003cth\u003eRate per m²\u003c\/th\u003e\n\u003cth\u003eFrequency \u0026amp; notes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotatoes\u003c\/td\u003e\n\u003ctd\u003e100–150g\u003c\/td\u003e\n\u003ctd\u003eBetter on Potato Fertiliser 3-5-8. At planting, then the sprinkle when you earth up, which is the top-dress. One or two top-dresses for earlies, two or three for maincrops.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCarrots\u003c\/td\u003e\n\u003ctd\u003e60–75g\u003c\/td\u003e\n\u003ctd\u003eOnce at sowing, and one top-dress at most. Extra nitrogen forks the root. Potassium supports sweetness and colour.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBeetroot \u0026amp; turnips\u003c\/td\u003e\n\u003ctd\u003e65–80g\u003c\/td\u003e\n\u003ctd\u003eEvery 5 weeks. Potassium and phosphorus drive root swelling and sugar build-up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOnions \u0026amp; garlic\u003c\/td\u003e\n\u003ctd\u003e65–80g\u003c\/td\u003e\n\u003ctd\u003eOnce at planting, and one top-dress at most. Stop once bulbs begin to swell. Extra feed makes bulbs that store badly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLeeks\u003c\/td\u003e\n\u003ctd\u003e70–110g\u003c\/td\u003e\n\u003ctd\u003eEvery 4–5 weeks. A long-season crop with high nutrient demand. Moderate nitrogen keeps the plant building shank rather than excess leaf.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eOn fruit trees and soft fruit\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eSoft fruit in the ground.\u003c\/strong\u003e Scatter the feed over the root area, along the row or under the bush, then hoe it in lightly and water.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrawberries:\u003c\/strong\u003e Strawberry Feed 3-2-7 suits them better. If you use this feed: summer-fruiting, 65–100 g per m² straight after picking (spring only for weak plants); everbearers, 50 g per m² in spring and again in midsummer. Don't go above 150 g per m² in a season.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSummer raspberries:\u003c\/strong\u003e 70–110 g per m² in March as buds break, then 50–100 g per m² in May or June. \u003cstrong\u003eNo feeding after the end of July.\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutumn raspberries:\u003c\/strong\u003e 70–110 g per m² in March, then 50–100 g per m² in June or July.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlackberries, tayberries, loganberries:\u003c\/strong\u003e 70–110 g per m² in March, then 50 g per m² in May or June if growth is weak.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlackcurrants:\u003c\/strong\u003e 100 g per m² in late winter and 100 g per m² in May. A further 50 g per m² after picking is optional.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRedcurrants, whitecurrants, gooseberries:\u003c\/strong\u003e 80–120 g per m² in late winter, plus 50 g per m² in May if growth is weak.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlueberries:\u003c\/strong\u003e this isn't an ericaceous feed, and a dedicated ericaceous feed suits them better. If you do use it, don't mix it in at planting or potting. Feed lightly three times, in late April, mid-May and mid-June: 30–50 g per bush in the ground, spread under the branches, or 1–2 g per litre of compost in pots. Keep them in acid soil or ericaceous compost (pH 4.5–5.5) and water with rainwater. Check the pH each spring; if it's above 5.5, stop and switch to an ericaceous feed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRaspberries, currants and gooseberries use a lot of potash. To top it up, add Sulphate of Potash in late winter: 10 g per m² on average soil, or up to 25 g per m² where a soil test shows low potash.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFruit and nut trees in the ground.\u003c\/strong\u003e One feed in spring is usually enough (almonds can have a second). Scatter it under the branches out to the tips, keeping it at least 30 cm from the trunk, and water in.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApples:\u003c\/strong\u003e 50–100 g per m² under the branches, March to early April. Nothing after early July.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePears, plums, gages, damsons, cherries:\u003c\/strong\u003e 100 g per m² under the branches, March–April. If plums still look pale by early summer, give a nitrogen-only feed by June rather than more of this bag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWalnuts:\u003c\/strong\u003e 100 g per m² under the branches in April. Nothing after June. On good soil, walnuts need nothing in their first year.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlmonds:\u003c\/strong\u003e 50–100 g per m² under the branches at flowering (February–March), with an optional second feed 4–6 weeks later. Nothing after June. Keep granules at least 45 cm from the trunk of young trees.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eA tree about 2 m across covers roughly 3 m², so it takes 150–300 g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBig established trees\u003c\/strong\u003e in mulched soil or grass often need no feeding. Feed them if growth is weak or crops are poor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNewly planted trees:\u003c\/strong\u003e don't put granules in the planting hole. Start feeding when growth begins the following spring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApples:\u003c\/strong\u003e don't overfeed. It gives greener, softer fruit that keeps less well. Only add Sulphate of Potash or Polyhalite if a soil test shows low potash.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWalnuts\u003c\/strong\u003e release natural compounds that affect neighbouring plants, such as tomatoes planted underneath. No fertiliser changes that.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFruit in pots\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatio apples, plums and figs:\u003c\/strong\u003e mix 4–6 g per litre of compost at potting. Then top-dress 2 g per litre of pot size in spring and again in late May. A 45 cm pot holds about 40 litres, so that's about 80 g each time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFigs:\u003c\/strong\u003e feed lightly and stop by midsummer. Kept a little hungry, they tend to make figs rather than leaves. A fig in the ground with its roots restricted (in a lined planting pit) can have one dressing of 40–50 g in March–April; one growing unrestricted in mulched soil needs nothing unless growth is weak (less than about 30 cm of new shoot a year). Give a fig only one spring feed, this or another fruit feed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLemons and other citrus\u003c\/strong\u003e are hungry plants. Mix 5 g per litre at potting, then top-dress 2 g per litre every 4–6 weeks from late March to September. Go up to 3 g per litre if the leaves turn evenly pale. Water with rainwater where you can.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYellow young leaves with green veins on citrus\u003c\/strong\u003e usually point to hard tap water or high pH rather than hunger. This isn't an iron feed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eSoil mix: charging compost at planting\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSituation\u003c\/th\u003e\n\u003cth\u003eRate\u003c\/th\u003e\n\u003cth\u003eMethod\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContainers \u0026amp; pots\u003c\/td\u003e\n\u003ctd\u003e4–6g per litre\u003c\/td\u003e\n\u003ctd\u003eMix evenly through the full volume before potting\u003c\/td\u003e\n\u003ctd\u003e4g\/L in compost already containing nutrients. 6g\/L in plain or peat-free mixes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrow bags (40–50L)\u003c\/td\u003e\n\u003ctd\u003e150–200g per bag\u003c\/td\u003e\n\u003ctd\u003eMix thoroughly throughout the full bag before planting\u003c\/td\u003e\n\u003ctd\u003e150g for bags with nutrients. 200g for plain bags.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRaised beds \u0026amp; borders\u003c\/td\u003e\n\u003ctd\u003e100–120g per m²\u003c\/td\u003e\n\u003ctd\u003eFork into the top 15–20cm before planting\u003c\/td\u003e\n\u003ctd\u003eDouble the standard top-dress rate as a single pre-season application.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle plant at transplanting\u003c\/td\u003e\n\u003ctd\u003e15–25g per plant\u003c\/td\u003e\n\u003ctd\u003eMix into the planting hole before placing the rootball\u003c\/td\u003e\n\u003ctd\u003e15g for small transplants. 25g for larger rootballs or hungry crops like tomatoes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eTop dressing: feeding through the season\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSituation\u003c\/th\u003e\n\u003cth\u003eRate\u003c\/th\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContainers (per litre of pot volume)\u003c\/td\u003e\n\u003ctd\u003e2–3g per litre\u003c\/td\u003e\n\u003ctd\u003eEvery 4 weeks\u003c\/td\u003e\n\u003ctd\u003eApply to compost surface, fork in lightly, water in thoroughly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrow bags (40–50L)\u003c\/td\u003e\n\u003ctd\u003e60–90g per bag\u003c\/td\u003e\n\u003ctd\u003eEvery 4 weeks from first truss\u003c\/td\u003e\n\u003ctd\u003eFor tomatoes and peppers, start top-dressing when first truss sets.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor beds \u0026amp; raised beds\u003c\/td\u003e\n\u003ctd\u003e80–100g per m²\u003c\/td\u003e\n\u003ctd\u003eEvery 4–6 weeks\u003c\/td\u003e\n\u003ctd\u003e4 weeks for heavy feeders. 5–6 weeks for root veg. Soft fruit: see the soft fruit section above.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle plant top-dressing\u003c\/td\u003e\n\u003ctd\u003e10–15g per plant\u003c\/td\u003e\n\u003ctd\u003eEvery 4 weeks\u003c\/td\u003e\n\u003ctd\u003eDistribute around the full root zone, not at the stem.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eSeasonal timing\u003c\/span\u003e\n\u003cp\u003eMid-March to end of August for most crops. Soil must be above 8°C for organic N fractions to mineralise, typically mid-to-late March in most of the UK. The mineral K and Ca fractions activate as soon as the soil is moist. Stop when fruit begins ripening in earnest.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eNever feed bone-dry soil\u003c\/span\u003e\n\u003cp\u003e\u003cstrong\u003eWater before you feed.\u003c\/strong\u003e Moisten the soil first and water in afterwards, as in steps 1 and 4.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003eUse Dr Forest \u003ca href=\"\/products\/organic-seaweed-powder-concentrated-100-soluble-fertiliser-dr\"\u003eOrganic Seaweed Extract Powder\u003c\/a\u003e as a fortnightly foliar or drench: it adds cytokinins without extra nitrogen load. Apply \u003ca href=\"\/products\/organic-amino-chelated-calcium\"\u003eAmino Chelated Calcium\u003c\/a\u003e as a targeted foliar spray if blossom end rot appears mid-season. Use the Dr Forest \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e during the vegetative establishment phase before switching to this formula at first flower.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 4 — GROWING GUIDE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-fv-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eGrowing Guide\u003c\/span\u003e\n\u003ch2\u003eKitchen garden growing guide — feeding roots, brassicas, legumes, fruiting veg and soft fruit\u003c\/h2\u003e\n\u003cp\u003eA UK kitchen garden runs on a short season: soil warm enough to feed from mid-to-late March, first frosts from October. Most problems come down to timing and water. For other allotment fertilisers and crop-specific feeds, see our \u003ca href=\"\/collections\/vegetables-allotment\"\u003evegetables and allotment range\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eFeeding fruit crops and vegetables by group\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eRoots and onions — potatoes, carrots, beetroot, onions, leeks\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eToo much nitrogen gives leaf at the root's expense; potatoes are the hungry exception\u003c\/li\u003e\n\u003cli\u003eUK varieties: potatoes 'Charlotte' and 'Maris Piper', carrot 'Nantes 2', beetroot 'Boltardy', onion 'Sturon', leek 'Musselburgh'\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eBrassicas — cabbage, kale, sprouts, broccoli\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLeaf and flower-head crops that stand for months in firm ground\u003c\/li\u003e\n\u003cli\u003eUK varieties: cabbage 'January King', kale 'Cavolo Nero', sprouting broccoli 'Claret', Brussels sprout 'Brigitte'\u003c\/li\u003e\n\u003cli\u003eNo brassica row in the rate tables; a balanced feed such as our \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e suits leaf crops better, though this formula won't harm them\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eLegumes — peas, runner beans, French beans, broad beans\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRoot nodules fix their own nitrogen; potassium and phosphorus help pod fill\u003c\/li\u003e\n\u003cli\u003eUK varieties: runner bean 'Scarlet Emperor', French bean 'Cobra', peas 'Hurst Green Shaft' and 'Kelvedon Wonder', broad bean 'Aquadulce Claudia'\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eFruiting veg — tomatoes, peppers, courgettes, squash, cucumbers, sweetcorn\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThe hungriest group; potassium carries flavour, while calcium and even watering keep fruit sound\u003c\/li\u003e\n\u003cli\u003eUK varieties: tomatoes 'Gardener's Delight' and 'Sungold', courgette 'Defender', squash 'Crown Prince', cucumber 'Marketmore', sweetcorn 'Swift'\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eSoft fruit crops — strawberries, raspberries, currants, gooseberries, blueberries\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePermanent plantings fed by the calendar; blueberries need acid soil, which our \u003ca href=\"\/products\/sulphur-soil-acidifier\"\u003eSulphur Soil Acidifier\u003c\/a\u003e can provide\u003c\/li\u003e\n\u003cli\u003eUK varieties: strawberry 'Cambridge Favourite', raspberries 'Glen Ample' and 'Autumn Bliss', blackcurrant 'Ben Sarek', gooseberry 'Invicta', blueberry 'Bluecrop'\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eFeeding adjustments by crop\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTomatoes — cordon and bush types\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 80–120g per m², or 60–90g per grow bag  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e every 4–5 weeks\u003c\/div\u003e\n\u003cp\u003eApply at planting, then top-dress every 4–5 weeks from when the first truss sets through to the end of harvest. Long-cropping cordons take more feeds than bush types.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003ePotatoes — earlies and maincrop\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100–150g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e at planting, then a top-dress when you earth up\u003c\/div\u003e\n\u003cp\u003eOne or two top-dresses for earlies, two or three for maincrops such as 'Maris Piper'. Use the upper rate (130–150g) where tuber bulk is the aim.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003ePeas and beans — the light feeders\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e peas 30–45g, runner and French beans 55–70g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e once, when the bed is prepared. A top-dress only if growth is pale\u003c\/div\u003e\n\u003cp\u003eLegumes make their own nitrogen; what they take from this feed is potassium and phosphorus.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eGreenhouse vs outdoor\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eGreenhouse and polytunnel\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTomatoes and cucumbers go in from late April in the south, May elsewhere\u003c\/li\u003e\n\u003cli\u003eMost crops are in pots or grow bags, so use those rows\u003c\/li\u003e\n\u003cli\u003eWater daily in hot spells and ventilate on warm days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eOutdoor beds and allotments\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTender crops go out after the last frost: mid-May in the south, late May to early June further north\u003c\/li\u003e\n\u003cli\u003eThe per-m² rates apply; feed before rain when you can\u003c\/li\u003e\n\u003cli\u003ePlant sweetcorn in blocks, not rows, so it pollinates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eWatering — the make-or-break factor\u003c\/h3\u003e\n\u003cp\u003eWater carries fertiliser to the roots and calcium into fruit, so erratic watering undoes good feeding. A thorough soak less often beats a daily splash.\u003c\/p\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eContainers and grow bags\u003c\/h4\u003e\n\u003cp\u003eCheck daily in summer and water until it runs from the base, twice a day for a grow-bag tomato in a heatwave.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eGreenhouse border\u003c\/h4\u003e\n\u003cp\u003eWater the soil, not the leaves, in the morning, and mulch to hold the moisture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eOutdoor beds and allotments\u003c\/h4\u003e\n\u003cp\u003eA weekly soak in dry spells, and never let peas and beans go dry at flowering or potatoes as the tubers form.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eCalcium moves with water\u003c\/span\u003e\n\u003cp\u003eHow much calcium reaches fruit depends heavily on water delivery (Hocking et al., 2016), so a plant that goes dry while its fruit swells can run short at the flower end even in calcium-rich soil. That is blossom end rot; more in \u003ca href=\"\/blogs\/the-dr-forest-blog\/blossom-end-rot-tomatoes\"\u003eour blossom end rot guide\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eCrop rotation on a four-bed plot\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBed one: potatoes.\u003c\/strong\u003e The hungriest crop, with outdoor tomatoes from the same family.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBed two: legumes and squash.\u003c\/strong\u003e Peas and beans, plus sweetcorn, courgettes and squash.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBed three: brassicas.\u003c\/strong\u003e They follow the legumes to use the nitrogen left behind.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBed four: roots and onions.\u003c\/strong\u003e None of them want freshly manured ground.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eEach group moves on one bed a year.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eUK seasonal timeline\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMonth\u003c\/th\u003e\n\u003cth\u003eTask\u003c\/th\u003e\n\u003cth\u003eFeeding\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJanuary\u003c\/td\u003e\n\u003ctd\u003ePlan the rotation. Winter-prune currants and gooseberries.\u003c\/td\u003e\n\u003ctd\u003eNone; feeding starts mid-to-late March\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFebruary\u003c\/td\u003e\n\u003ctd\u003eChit seed potatoes. Cut autumn raspberries to the ground.\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarch\u003c\/td\u003e\n\u003ctd\u003ePlant onion sets and first early potatoes. Sow tomatoes under cover.\u003c\/td\u003e\n\u003ctd\u003eSoft fruit: first feed. Beds: 100–120g per m² before planting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApril\u003c\/td\u003e\n\u003ctd\u003ePlant maincrop potatoes. Sow carrots, beetroot and peas outdoors.\u003c\/td\u003e\n\u003ctd\u003ePotatoes: 100–150g per m² at planting. Carrots: 60–75g per m² at sowing. Pots: 4–6g per litre\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMay\u003c\/td\u003e\n\u003ctd\u003ePlant greenhouse tomatoes. Plant out tender crops after the last frost. Earth up potatoes.\u003c\/td\u003e\n\u003ctd\u003eTransplants: 15–25g per plant. Grow bags: 150–200g per bag before planting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJune\u003c\/td\u003e\n\u003ctd\u003ePlant leeks. Pinch out tomato side shoots. Lift first earlies.\u003c\/td\u003e\n\u003ctd\u003eTomatoes: top-dressing starts as the first truss sets. Raspberries and blueberries: June feed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJuly\u003c\/td\u003e\n\u003ctd\u003eKeep watering steady. Harvest garlic, onions, courgettes and beans.\u003c\/td\u003e\n\u003ctd\u003eHeavy feeders: every 4 weeks. Summer-fruiting strawberries: straight after picking\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAugust\u003c\/td\u003e\n\u003ctd\u003eHarvest tomatoes, sweetcorn and summer raspberries. Plant new strawberries.\u003c\/td\u003e\n\u003ctd\u003eWinter squash: last feed. Summer raspberries: none after the end of July\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeptember\u003c\/td\u003e\n\u003ctd\u003eLift maincrop potatoes. Leave squash in the sun to harden their skins.\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOctober\u003c\/td\u003e\n\u003ctd\u003ePlant garlic and sow broad beans. Clear spent crops to the compost heap.\u003c\/td\u003e\n\u003ctd\u003eNone for most crops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNovember\u003c\/td\u003e\n\u003ctd\u003ePlant bare-root fruit bushes and canes. Mulch empty beds.\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDecember\u003c\/td\u003e\n\u003ctd\u003eCheck stored crops. Order seed.\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eCommon problems\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBlossom end rot on tomatoes and peppers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e calcium demand in swelling fruit outrunning delivery (Ho \u0026amp; White, 2005)\u003c\/div\u003e\n\u003cp\u003eA sunken, leathery patch at the flower end. Water deeply and evenly, and if it appears mid-season apply \u003ca href=\"\/products\/organic-amino-chelated-calcium\"\u003eAmino Chelated Calcium\u003c\/a\u003e as a targeted foliar spray.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eYellowing between the veins of older leaves\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e magnesium shortage, often brought on by heavy potash feeding\u003c\/div\u003e\n\u003cp\u003ePotassium suppresses magnesium uptake more than the reverse, and potassium-induced magnesium deficiency is widespread (Xie et al., 2021). This blend carries three magnesium sources alongside its potash. See \u003ca href=\"\/blogs\/the-dr-forest-blog\/why-are-my-tomato-leaves-turning-yellow\"\u003emagnesium deficiency in tomato plants\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eAll leaf and few flowers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e too much nitrogen, or dry roots at flowering\u003c\/div\u003e\n\u003cp\u003eFresh manure or a high-nitrogen feed keeps plants in leaf; switch to this formula at first flower. Runner beans that flower without setting are often dry at the roots.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSplit tomatoes and cracked roots\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e a heavy watering or downpour after a dry spell\u003c\/div\u003e\n\u003cp\u003eThe inside swells faster than the skin can stretch. Water evenly and mulch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eOnions that won't keep\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e feeding after the bulbs start to swell, or lifting before the necks dry\u003c\/div\u003e\n\u003cp\u003eStop feeding once bulbs begin to swell visibly. Let the tops fall, then lift on a dry day and dry them off before storing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 5 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-fv-panel5\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eWhy a potash-led organic fertiliser grows better fruit and veg\u003c\/h2\u003e\n\u003cp\u003eA 4-5-6 ratio follows what cropping plants take from the soil once established: steady phosphorus, moderate nitrogen and more potassium than a leaf crop would want.\u003c\/p\u003e\n\u003ch3\u003eWhy the 4-5-6 ratio works\u003c\/h3\u003e\n\u003cp\u003eOnce a plant turns from leaf to fruit, its main job is moving sugars into the part you'll eat, and potassium is central to that. Of all the mineral nutrients, potassium has the strongest influence on fruit quality, from sugars and firmness to vitamin C (Lester et al., 2010). Nitrogen stays moderate because a plant given plenty at flowering keeps making leaf.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e4-5-6\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNPK ratio\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e3:1:3\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCa:Mg:K target\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e−13%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eTomato nitrate, organic vs chemical\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e+32–84%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSoil microbial abundance and activity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-pullquote\"\u003ePotash decides how the fruit tastes, calcium whether it holds together, and water whether either of them gets there.\u003c\/div\u003e\n\u003ch3\u003eWhat each nutrient does in the crop\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eNutrient\u003c\/th\u003e\n\u003cth\u003eWhat it does\u003c\/th\u003e\n\u003cth\u003eCarried by, in this blend\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrogen\u003c\/td\u003e\n\u003ctd\u003eLeaf and stem growth\u003c\/td\u003e\n\u003ctd\u003eNitrogen plant extract, rapeseed meal, alfalfa meal, mealworm frass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhosphorus\u003c\/td\u003e\n\u003ctd\u003eRoots, flowering, pod and seed set\u003c\/td\u003e\n\u003ctd\u003ePhosphorous rich plant meal, rock phosphate, nitrogen plant extract, frass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotassium\u003c\/td\u003e\n\u003ctd\u003eSugar movement into fruit; sweetness and colour\u003c\/td\u003e\n\u003ctd\u003eSulphate of potash, polyhalite, nitrogen plant extract, herbal mixture (comfrey)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium\u003c\/td\u003e\n\u003ctd\u003eCell walls; a shortage at the flower end is blossom end rot\u003c\/td\u003e\n\u003ctd\u003eGypsum, polyhalite, rock phosphate, phosphorous rich plant meal, alfalfa meal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium\u003c\/td\u003e\n\u003ctd\u003eThe centre of every chlorophyll molecule\u003c\/td\u003e\n\u003ctd\u003eMicronised magnesium mineral, magnesium sulphate, polyhalite\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSulphur\u003c\/td\u003e\n\u003ctd\u003eProteins, and the flavour of onions, garlic and brassicas\u003c\/td\u003e\n\u003ctd\u003ePolyhalite, sulphate of potash, gypsum, magnesium sulphate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilicon\u003c\/td\u003e\n\u003ctd\u003eStructural strength in stems and leaves\u003c\/td\u003e\n\u003ctd\u003eSilica meal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eThe 3:1:3 calcium, magnesium and potassium target\u003c\/h3\u003e\n\u003cp\u003eThese three compete at the root, and potassium suppresses magnesium uptake more than the reverse (Xie et al., 2021), so the blend is designed around a 3:1:3 Ca:Mg:K target. We don't treat the ratio as magic: within normal soil ranges, cation ratios make little difference to fertility (Kopittke \u0026amp; Menzies, 2007). Having enough of each is what counts.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eFast minerals, slow meals: an organic-mineral fertiliser\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eImmediate mineral fraction — days 1–14\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSulphate of potash — 50% K₂O, soluble at once\u003c\/li\u003e\n\u003cli\u003eGypsum — 23.3% Ca and 18.6% S in sulphate form\u003c\/li\u003e\n\u003cli\u003eMagnesium sulphate — immediately available magnesium\u003c\/li\u003e\n\u003cli\u003ePhosphorous rich plant meal — the quick phosphorus\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eSlow-release fraction — weeks 3–10 and beyond\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNitrogen plant extract — nitrogen over 6–8 weeks\u003c\/li\u003e\n\u003cli\u003eYorkshire polyhalite — K, Ca, Mg and S over 50–60 days\u003c\/li\u003e\n\u003cli\u003eRapeseed meal — slow nitrogen as microbes break it down\u003c\/li\u003e\n\u003cli\u003eMicronised rock phosphate and magnesium mineral — reserves lasting months\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eWhat the organic fraction adds: the evidence\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eBetter tomatoes at a similar yield\u003c\/h4\u003e\n\u003cp\u003eAgainst chemical fertiliser alone, organic fertiliser moved tomato quality (nitrate, sugar, lycopene) far more than it moved yield (Fan et al., 2023).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eMore soil life\u003c\/h4\u003e\n\u003cp\u003eOrganic inputs were among the drivers of bigger, busier soil microbial communities in organically managed ground (Lori et al., 2017).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eMore soil carbon\u003c\/h4\u003e\n\u003cp\u003eOrganic systems hold more topsoil carbon (Gattinger et al., 2012), and soil carbon is what gives a bed its crumb and its hold on water.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eBiochar holds water and nutrients\u003c\/h4\u003e\n\u003cp\u003eThe likeliest reasons for its gains, the authors suggest, are a liming effect and better water holding, along with better nutrient availability (Jeffery et al., 2011).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eHumic substances grow more root\u003c\/h4\u003e\n\u003cp\u003eMore shoot and more root on average, though the response depends mainly on source and rate (Rose et al., 2014).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003eSeaweed works as a biostimulant\u003c\/h4\u003e\n\u003cp\u003eIts value lies in growth-regulating compounds such as cytokinins and auxins (Khan et al., 2009); the idea that seaweed works mainly through its nutrients is \"no longer tenable\" (Craigie, 2011).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eStudy data\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eStudy\u003c\/th\u003e\n\u003cth\u003eScope\u003c\/th\u003e\n\u003cth\u003eFinding\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFan et al. (2023)\u003c\/td\u003e\n\u003ctd\u003e124 studies, 2,041 data sets\u003c\/td\u003e\n\u003ctd\u003eOrdinary organic fertiliser vs chemical fertiliser alone: tomato nitrate −13%, sugar +10.7%, lycopene +10.8%. All organic types: yield +3.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLori et al. (2017)\u003c\/td\u003e\n\u003ctd\u003e56 papers, 149 comparisons\u003c\/td\u003e\n\u003ctd\u003eMicrobial biomass and enzyme activity +32–84% under organic management\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGattinger et al. (2012)\u003c\/td\u003e\n\u003ctd\u003e74 studies\u003c\/td\u003e\n\u003ctd\u003eTopsoil carbon +3.5 t per hectare in organic systems\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJeffery et al. (2011)\u003c\/td\u003e\n\u003ctd\u003eMeta-analysis, biochar\u003c\/td\u003e\n\u003ctd\u003eCrop productivity +10% on average\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRose et al. (2014)\u003c\/td\u003e\n\u003ctd\u003eMeta-analysis, humic substances\u003c\/td\u003e\n\u003ctd\u003eShoot dry weight +22%, root dry weight +21%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eBarragán-Fonseca, K.Y. et al. (2022). Insect frass and exuviae to promote plant growth and health. \u003cem\u003eTrends in Plant Science\u003c\/em\u003e, 27(7), 646–654.\u003c\/li\u003e\n\u003cli\u003eCraigie, J.S. (2011). Seaweed extract stimuli in plant science and agriculture. \u003cem\u003eJournal of Applied Phycology\u003c\/em\u003e, 23(3), 371–393.\u003c\/li\u003e\n\u003cli\u003eEpstein, E. (1999). Silicon. \u003cem\u003eAnnual Review of Plant Physiology and Plant Molecular Biology\u003c\/em\u003e, 50, 641–664.\u003c\/li\u003e\n\u003cli\u003eFan, H. et al. (2023). Effects of organic fertilizer supply on soil properties, tomato yield, and fruit quality: a global meta-analysis. \u003cem\u003eSustainability\u003c\/em\u003e, 15(3), 2556.\u003c\/li\u003e\n\u003cli\u003eGattinger, A. et al. (2012). Enhanced top soil carbon stocks under organic farming. \u003cem\u003eProceedings of the National Academy of Sciences\u003c\/em\u003e, 109(44), 18226–18231.\u003c\/li\u003e\n\u003cli\u003eHo, L.C. \u0026amp; White, P.J. (2005). A cellular hypothesis for the induction of blossom-end rot in tomato fruit. \u003cem\u003eAnnals of Botany\u003c\/em\u003e, 95(4), 571–581.\u003c\/li\u003e\n\u003cli\u003eHocking, B. et al. (2016). Fruit calcium: transport and physiology. \u003cem\u003eFrontiers in Plant Science\u003c\/em\u003e, 7, 569.\u003c\/li\u003e\n\u003cli\u003eJeffery, S. et al. (2011). A quantitative review of the effects of biochar application to soils on crop productivity using meta-analysis. \u003cem\u003eAgriculture, Ecosystems \u0026amp; Environment\u003c\/em\u003e, 144(1), 175–187.\u003c\/li\u003e\n\u003cli\u003eKhan, W. et al. (2009). Seaweed extracts as biostimulants of plant growth and development. \u003cem\u003eJournal of Plant Growth Regulation\u003c\/em\u003e, 28(4), 386–399.\u003c\/li\u003e\n\u003cli\u003eKopittke, P.M. \u0026amp; Menzies, N.W. (2007). A review of the use of the basic cation saturation ratio and the \"ideal\" soil. \u003cem\u003eSoil Science Society of America Journal\u003c\/em\u003e, 71(2), 259–265.\u003c\/li\u003e\n\u003cli\u003eLester, G.E. et al. (2010). Impact of potassium nutrition on postharvest fruit quality: melon (Cucumis melo L) case study. \u003cem\u003ePlant and Soil\u003c\/em\u003e, 335, 117–131.\u003c\/li\u003e\n\u003cli\u003eLori, M. et al. (2017). Organic farming enhances soil microbial abundance and activity: a meta-analysis and meta-regression. \u003cem\u003ePLOS ONE\u003c\/em\u003e, 12(7), e0180442.\u003c\/li\u003e\n\u003cli\u003eRies, S.K. et al. (1977). Triacontanol: a new naturally occurring plant growth regulator. \u003cem\u003eScience\u003c\/em\u003e, 195(4284), 1339–1341.\u003c\/li\u003e\n\u003cli\u003eRose, M.T. et al. (2014). A meta-analysis and review of plant-growth response to humic substances: practical implications for agriculture. \u003cem\u003eAdvances in Agronomy\u003c\/em\u003e, 124, 37–89.\u003c\/li\u003e\n\u003cli\u003eXie, K. et al. (2021). Synergistic and antagonistic interactions between potassium and magnesium in higher plants. \u003cem\u003eThe Crop Journal\u003c\/em\u003e, 9(2), 249–256.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"margin-top: 0.6em;\"\u003eFigures describe the published literature on these ingredient classes and are not product-specific yield guarantees.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 6 — FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-fv-panel6\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions about fruit and vegetable fertiliser\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq1\"\u003eWhat is the best organic fertiliser for vegetables?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt depends on the crop. Fruiting and root crops, soft fruit and beans do best on a potash-led feed like this 4-5-6; leaf crops such as cabbage and lettuce suit a balanced feed like our All Purpose 4-4-4. The longer answer is on \u003ca href=\"\/collections\/vegetables-allotment\"\u003ewhat is the best organic fertiliser for vegetables\u003c\/a\u003e.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq2\"\u003eWhen should I switch from an all-purpose fertiliser to this formula?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eWhen your plants move from leafy growth into flowering and fruiting, typically when the first flower buds appear. For tomatoes, peppers and cucumbers this is usually 4–6 weeks after transplanting. For potatoes, carrots and onions, where root development is the goal from planting, you can use this formula from the start.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq3\"\u003eHow often should I feed my vegetable garden?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eOn this bag, top-dress beds every 4–6 weeks, with every 4 weeks for heavy feeders. Tomatoes, peppers and courgettes are better on Tomato Fertiliser 3-4-6, every 3 weeks. Peas, beans, carrots and onions in the ground want one feed, or none, once the bed is prepared. Stop in the last 4 weeks of the season.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq4\"\u003eWhy is it higher in potassium than nitrogen?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eBecause potassium has more influence on fruit quality than any other mineral nutrient (Lester et al., 2010), whereas nitrogen mostly drives leaf. The potassium comes chloride-free, from sulphate of potash and Yorkshire polyhalite.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq5\"\u003eWill it stop blossom end rot in tomatoes and peppers?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNo fertiliser can promise that. Blossom end rot is calcium failing to reach the flower end of fast-growing fruit (Ho \u0026amp; White, 2005), and calcium travels with water, so erratic watering can cause it even in calcium-rich soil. This formula carries 6.2% calcium; your part is watering evenly. If it appears mid-season, apply Amino Chelated Calcium as a targeted foliar spray.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq6\"\u003eCan I use it for tomatoes and peppers in grow bags?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Charge at 150–200g per bag before planting, then top-dress at 60–90g per bag from when the first truss sets: every 4–5 weeks for tomatoes, every 4 weeks for peppers.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq7\"\u003eCan I use it in peat-free compost?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Mix it through at 6g per litre for plain or peat-free mixes, or 4g per litre for compost that already contains nutrients, then top-dress at 2–3g per litre of pot volume every 4 weeks.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq8\"\u003eIs it suitable for soft fruit like strawberries and raspberries?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. The 4-5-6 profile suits soft fruit: moderate nitrogen, phosphorus for root development and bud initiation, and potassium for fruit size, sugar and colour. Rates by crop: strawberries (Strawberry Feed 3-2-7 suits them better), summer-fruiting 65–100 g per m² straight after picking, everbearers 50 g per m² in spring and again in midsummer, no more than 150 g per m² in a season; summer raspberries 70–110 g per m² in March, then 50–100 g per m² in May or June, with no feeding after the end of July; autumn raspberries 70–110 g per m² in March, then 50–100 g per m² in June or July; blackcurrants 100 g per m² in late winter and 100 g per m² in May, plus an optional 50 g per m² after picking; redcurrants, whitecurrants and gooseberries 80–120 g per m² in late winter, plus 50 g per m² in May if growth is weak; blueberries 30–50 g per bush in late April, mid-May and mid-June, or 1–2 g per litre of compost in pots. The soft fruit section under How to Use has the full detail.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq9\"\u003eCan I use it on brassicas and leafy vegetables?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYou can, and it won't harm them, but it is calibrated for fruit, seed, root and tuber crops rather than leaf. For cabbage, kale, lettuce and spinach, a balanced feed such as our \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e is the better match.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq10\"\u003eHow much area does a bag cover?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eA 1.5kg bag covers approximately 15–18m² at the standard top-dressing rate of 80–100g\/m², or charges around 250–375 litres of container compost at 4–6g per litre. In practice, a 1.5kg bag top-dresses 16–25 standard grow bags per application, or keeps about 3m² of raised bed in tomatoes through a full season with three or four applications.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq11\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq11\"\u003eIs it organic?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is made with organic ingredients and natural minerals, all listed on this page. The finished blend has not been through a whole-product certification scheme, so we don't describe it as certified.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq12\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq12\"\u003eIs it safe for children, pets and bees?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eUsed as directed, yes. Every ingredient is organic or mineral in origin, with no synthetic coatings. Apply to the soil surface and water in before flowering to avoid dust contact with visiting pollinators. Keep the bag sealed and out of reach: dogs will investigate anything that smells of meal.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-fv-faq13\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-fv-faq13\"\u003eCan I use it alongside other Dr Forest products?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Use \u003ca href=\"\/products\/organic-seaweed-powder-concentrated-100-soluble-fertiliser-dr\"\u003eOrganic Seaweed Extract Powder\u003c\/a\u003e as a fortnightly foliar or drench to add cytokinins without extra nitrogen, \u003ca href=\"\/products\/organic-amino-chelated-calcium\"\u003eAmino Chelated Calcium\u003c\/a\u003e as a targeted foliar spray if blossom end rot appears mid-season, and All Purpose 4-4-4 during vegetative establishment before switching to this formula at first flower. Avoid combining it with a high-nitrogen liquid feed in the same week as a top-dressing.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fv-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-fv-faq-paa1\" class=\"drf-faq-q\"\u003eWhich vegetables don't need much fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003ePeas and broad, runner and French beans fix their own nitrogen, so they need one light dressing when you prepare the bed (30–45 g per m² for peas, 55–70 g for beans) and rarely anything after. Carrots and parsnips want soil that wasn't freshly manured, or they fork; a light base dressing is plenty. Leafy crops such as cabbage, kale and lettuce aren't harmed by this feed, but they want a nitrogen-led one. The hungry ones are tomatoes, courgettes, squash, potatoes and soft fruit, which is what this 4-5-6 is built for.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fv-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-fv-faq-paa2\" class=\"drf-faq-q\"\u003eWhat is a good slow-release organic fertiliser for vegetables?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eOne that mixes fast and slow inputs, so plants get something in the first fortnight and something still arriving in week six. This 4-5-6 does that with 19 named ingredients, chloride-free potash from sulphate of potash and Yorkshire polyhalite, plus calcium, magnesium and sulphur, and British biochar, humic acid, clay and Scottish seaweed for the soil. One top-dressing at around 80–100 g per m² feeds for six to eight weeks. Slow release depends on soil life, so expect little in a cold March. More on how it works: \u003ca href=\"\/blogs\/the-dr-forest-blog\/organic-slow-release-fertiliser\"\u003eorganic slow-release fertiliser\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fv-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-fv-faq-paa3\" class=\"drf-faq-q\"\u003eWhich NPK is best for vegetables?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eIt depends what you're eating. For fruit, roots, pods and tubers (tomatoes, courgettes, potatoes, beans, soft fruit), a potash-led ratio with moderate nitrogen, such as this 4-5-6, keeps plants cropping rather than running to leaf. For leaf crops (cabbage, kale, spinach, salads), you want nitrogen in the lead. For a mixed plot where you only buy one bag, a balanced 4-4-4 is the compromise. The numbers are percentages of nitrogen, phosphate and potash by weight; our \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-4-4-4-fertiliser\"\u003eguide to NPK\u003c\/a\u003e explains how to read them.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ===== END 6-TAB BODY ===== --\u003e\n","brand":"Dr Forest","offers":[{"title":"1.5kg","offer_id":41868362809531,"sku":"DF-FRUITVEG-1.5","price":11.5,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":41868362875067,"sku":"DF-FRUITVEG-4","price":23.5,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":41868362907835,"sku":"DF-FRUITVEG-9","price":44.0,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":44784890085563,"sku":"DF-FRUITVEG-15","price":60.49,"currency_code":"GBP","in_stock":true},{"title":"30kg","offer_id":44784893886651,"sku":"DF-FRUITVEG-30","price":120.0,"currency_code":"GBP","in_stock":true},{"title":"60kg","offer_id":57055578751350,"sku":"DF-FRUITVEG-60","price":225.0,"currency_code":"GBP","in_stock":true},{"title":"120kg","offer_id":57087545049462,"sku":"DF-FRUITVEG-120","price":420.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/premium-fruit-vegetable-fertiliser-two-brown-kraft-paper-bags-902.webp?v=1785512768"},{"product_id":"polyhalite","title":"Polyhalite Fertiliser | 4-in-1 Mineral (K, Ca, Mg, S)","description":"\u003c!-- Dr Forest — Polyhalite Fertiliser Product Page (v2 — Design System v1.0 — GSC-tuned May 2026) --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- Prefix: pl --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-cream:      #F5F2EC;\n    --drf-border:     #d4cfc5;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n  }\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; font-weight: 600; font-size: 0.85em; letter-spacing: 0.2em; text-transform: uppercase; color: var(--drf-muted); margin: 1.2em 0 0.3em; 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}\n\n  \/* ── CALLOUTS ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); color: var(--drf-cream); border-left-color: var(--drf-gold); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n\n  \/* ── PULL QUOTE ── *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: 1.4em; color: var(--drf-grn); 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padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* ── COMPARISON BOXES ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 600px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput checked id=\"drf-pl-tab1\" name=\"drf-pl-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-pl-tab2\" name=\"drf-pl-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-pl-tab3\" name=\"drf-pl-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-pl-tab4\" name=\"drf-pl-tabset\" type=\"radio\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-pl-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-pl-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-pl-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-pl-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv id=\"drf-pl-panel1\" class=\"drf-panel\"\u003e\n\u003ch2\u003ePolyhalite fertiliser — four macronutrients in one Yorkshire mineral\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eMined in Yorkshire\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e4 Macronutrients\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eEU Organic Approved\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eDissolves Gradually\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eLow in Chloride\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eRecyclable Packaging\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.drforest.co.uk\/products\/polyhalite\"\u003eDr Forest Polyhalite Fertiliser\u003c\/a\u003e is a naturally occurring mineral fertiliser that supplies four macronutrients (potassium, calcium, magnesium and sulphur) from a single Yorkshire crystal, applied at 50 to 125 g\/m² on beds every 6 to 12 weeks or 35 to 70 g\/m² on lawns two or three times a year.\u003c\/strong\u003e It's mined from beneath the North Yorkshire coast at Boulby — the world's only currently operating commercial polyhalite mine — and arrives in the bag exactly as it left the ground: crushed, screened, granulated. No chemical processing, no synthetic additives. Because it's a sulphate-based potash mineral with virtually zero chloride, it's particularly valuable for chloride-sensitive crops like tomatoes, strawberries, potatoes and salad leaves.\u003c\/p\u003e\n\u003cp\u003eThis is the mineral that underpins every Dr Forest crop-specific blend — the primary source of potassium, calcium, magnesium and sulphur across the range, because nothing else delivers all four in a form that dissolves gradually from a single natural input. Think of it as a multi-nutrient upgrade on sulphate of potash: the same potash, low in chloride, plus the calcium, magnesium and sulphur most garden soils also need. A naturally mined mineral that is EU Organic Approved, crushed and granulated with no chemical refining. Now available as a straight, so you can apply the same mineral directly to your soil.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e14%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eK₂O · Potash\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e17%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCaO · Calcium\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e6%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eMgO · Magnesium\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e48%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSO₃ · Sulphur\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat is polyhalite used for in the garden?\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eA potash source low in chloride\u003c\/strong\u003e — supplies 14% K₂O as potassium sulphate, the same potash as sulphate of potash (SOP), low in chloride, but with calcium, magnesium and sulphur alongside it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase mineral amendment for all crops\u003c\/strong\u003e — delivers the four macronutrients most commonly deficient in containers, raised beds and intensively cropped soils, where leaching strips them out fastest\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium delivery without pH change\u003c\/strong\u003e — calcium sulphate doesn't raise soil pH the way lime does\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDissolves gradually for season-long feeding\u003c\/strong\u003e — University of Nottingham research confirms 50–60% of sulphur is immediately available, with the rest released over the growing season\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChloride-sensitive crops\u003c\/strong\u003e — tomatoes, strawberries, potatoes, peppers and salad leaves benefit from potassium delivered without chloride accumulation in the root zone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMagnesium supplementation\u003c\/strong\u003e — prevents interveinal chlorosis (yellowing between leaf veins) and activates over 300 plant enzymes, including those that build chlorophyll\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLawn and turf nutrition\u003c\/strong\u003e — potassium hardens turf for winter, calcium improves soil structure, sulphur supports colour and density\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoil structure on heavy clay\u003c\/strong\u003e — calcium and magnesium displace sodium on clay particles, opening up drainage and aeration without altering pH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYield and fruit quality\u003c\/strong\u003e — a 921-trial meta-analysis across 47 crops in 33 countries showed polyhalite raised yields by 3.8–16.3% over standard NPK programmes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy polyhalite instead of buying K, Ca, Mg and S separately?\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003ePolyhalite — this product\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFour macronutrients in one natural granule — K, Ca, Mg, S\u003c\/li\u003e\n\u003cli\u003eDissolves gradually — nutrients available across the full growing season\u003c\/li\u003e\n\u003cli\u003eLow in chloride, low salt index — safe for all crops including chloride-sensitive ones\u003c\/li\u003e\n\u003cli\u003eMined, crushed, granulated — no chemical processing\u003c\/li\u003e\n\u003cli\u003eNaturally mined mineral, EU Organic Approved\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eBuying K, Ca, Mg, S as separate products\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSulphate of potash plus gypsum plus Epsom salt — three products, three bags\u003c\/li\u003e\n\u003cli\u003eAll fully soluble, so higher leaching losses and more frequent top-ups\u003c\/li\u003e\n\u003cli\u003eHigher total salt load from stacking soluble inputs\u003c\/li\u003e\n\u003cli\u003eHarder to balance the ratios without overloading one nutrient\u003c\/li\u003e\n\u003cli\u003eHigher cost per nutrient unit and more packaging in the bin\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eHandcrafted in Stockport\u003c\/span\u003e\n\u003cp\u003eEvery Dr Forest product is blended and packed by hand in small batches at our workshop in Stockport, Greater Manchester. Recyclable packaging throughout. Ingredients chosen for quality, not cost. New to polyhalite? Read \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-polyhalite\"\u003eWhat is polyhalite?\u003c\/a\u003e on the Dr Forest blog.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════ TAB 2 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv id=\"drf-pl-panel2\" class=\"drf-panel\"\u003e\n\u003ch2\u003eThe science of polyhalite fertiliser: four nutrients, low chloride\u003c\/h2\u003e\n\u003cp\u003eThis bag is Yorkshire polyhalite — one crystal supplying potassium, calcium, magnesium and sulphur as sulphates, with virtually no chloride. Mined, crushed and granulated; no chemical refining. It dissolves gradually from the crystal structure, which suits containers, beds and turf that need a season-long base rather than a soluble hit.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eNutrient\u003c\/th\u003e\n\u003cth\u003eContent\u003c\/th\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotassium (K₂O)\u003c\/td\u003e\n\u003ctd\u003e14%\u003c\/td\u003e\n\u003ctd\u003eSulphate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium (CaO)\u003c\/td\u003e\n\u003ctd\u003e17%\u003c\/td\u003e\n\u003ctd\u003eSulphate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium (MgO)\u003c\/td\u003e\n\u003ctd\u003e6%\u003c\/td\u003e\n\u003ctd\u003eSulphate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSulphur (SO₃)\u003c\/td\u003e\n\u003ctd\u003e48%\u003c\/td\u003e\n\u003ctd\u003eSulphate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eFull definition guide\u003c\/span\u003e\n\u003cp\u003eFormation, mining and how it compares to other potash sources: \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-polyhalite\"\u003eWhat is polyhalite?\u003c\/a\u003e — this tab stays SKU-short on purpose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv id=\"drf-pl-panel3\" class=\"drf-panel\"\u003e\n\u003ch2\u003eHow to use polyhalite fertiliser: application rates\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eA base mineral — not a complete fertiliser\u003c\/span\u003e\n\u003cp\u003ePolyhalite contains \u003cstrong\u003eno nitrogen and no phosphorus\u003c\/strong\u003e. It supplies potassium, calcium, magnesium and sulphur. For a complete feeding programme, use it alongside a nitrogen and phosphorus source — a Dr Forest crop-specific blend (Tomato, Rose \u0026amp; Flower, Fruit \u0026amp; Veg) or an all-purpose NPK fertiliser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003ePolyhalite fertiliser application rates\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSoil mix — potting and container preparation\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 2.5–5g per litre of compost  |  \u003cstrong\u003eWhen:\u003c\/strong\u003e At planting\u003c\/div\u003e\n\u003cp\u003eMix thoroughly into compost or potting soil before planting. Because it dissolves gradually, it gives baseline calcium, magnesium, potassium and sulphur for the first 8–12 weeks. Ideal for all container crops.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTop-dressing — established containers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 10–30g per 10-litre pot  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 6–8 weeks during the growing season\u003c\/div\u003e\n\u003cp\u003eScatter granules evenly across the surface and water in. Because it dissolves gradually, applications are less frequent than with soluble alternatives. Particularly valuable for tomatoes, peppers and other heavy-feeding fruiting crops.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eOutdoor beds and borders\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 50–125g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 6–12 weeks, spring to autumn\u003c\/div\u003e\n\u003cp\u003eBroadcast evenly across the soil surface and water in well. Lower rate for general maintenance, higher rate for heavy feeders, new plantings or clay improvement. Apply at planting and as a mid-season top-up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawns and turf\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 35–70g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e 2–3 times per year — spring, summer, autumn\u003c\/div\u003e\n\u003cp\u003eApply and water in. Potassium hardens turf for winter, calcium improves soil structure, sulphur supports colour and density. Polyhalite is used as part of professional turf nutrition programmes at the highest level, including Wimbledon's (\u003ca href=\"https:\/\/www.telegraph.co.uk\/news\/2023\/07\/09\/wimbledon-courts-fertiliser-green-grass-polyhalite-boulby\/\"\u003eThe Telegraph, 9 July 2023\u003c\/a\u003e).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eClay soil improvement\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100–150g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Annually in autumn or spring\u003c\/div\u003e\n\u003cp\u003eThe calcium in polyhalite displaces sodium on clay particles, improving aggregate structure, drainage and workability. Unlike lime, it doesn't alter pH — so it's safe on all soil types. Work into the top 10–15cm where you can.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eOn fruit trees and soft fruit\u003c\/h3\u003e\n\u003cp\u003ePolyhalite gives fruit potash, magnesium, calcium and sulphur in one granule. It has no nitrogen or phosphorus, so it's a potash and magnesium top-up, not a complete feed. Keep using your usual fruit feed alongside it.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore you start\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnce a year is enough for fruit in the ground.\u003c\/strong\u003e Fruit uses far less potash per square metre than vegetables, so don't follow the beds-and-borders schedule of every 6–12 weeks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest your soil if you can.\u003c\/strong\u003e Soil that's already high in potash or magnesium doesn't need polyhalite, and too much potash does more harm than good, especially to apples.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpread it where the roots are:\u003c\/strong\u003e evenly over the ground under the branches, out to the branch tips, or along the row. Keep it 30 cm from tree trunks, and off the stems of bushes, canes and strawberries, then water it in or rake it in lightly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring:\u003c\/strong\u003e a level tablespoon holds about 12–15 g.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTrees in the ground\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApples:\u003c\/strong\u003e none without a soil test. Only use it if a test shows low potash: 125 g per m² under the branches at Index 0 (low), 100 g per m² at Index 1, and none at Index 2 or above. Once a year in February–March. Too much potash on apples can spoil storage and make bitter pit (brown spots in the flesh) more likely, and polyhalite's calcium is \u003cstrong\u003enot\u003c\/strong\u003e a cure for bitter pit. If a test shows low magnesium but potash is fine, use Kieserite instead, because polyhalite always adds more potash than magnesium.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlums, gages and damsons:\u003c\/strong\u003e 50–100 g per m² under the branches, once a year in February–March. Use the lower rate on good garden soil and the higher rate on light, sandy or hungry soil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFigs planted in the ground:\u003c\/strong\u003e figs fruit best on lean soil. A fig with its roots restricted (in a lined planting pit) can have one light dressing of 20–40 g per tree over the pit in March–April. A fig growing unrestricted in mulched soil needs nothing unless growth is weak (less than about 30 cm of new shoot a year). Give a fig only one spring feed, this or a general fruit feed, and never feed after midsummer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWalnuts:\u003c\/strong\u003e 50–100 g per m² under the branches, once a year in early spring before the leaves open. On good soil, walnuts need nothing in their first year. For a large tree that isn't cropping well, get a soil test first. Walnuts release natural compounds that affect neighbouring plants; no fertiliser changes that.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlmonds:\u003c\/strong\u003e 50–100 g per m² under the branches, once a year in February, before flowering. Otherwise as for walnuts. On young trees, keep granules at least 45 cm from the trunk.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSoft fruit in the ground\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlackcurrants, redcurrants, gooseberries, raspberries:\u003c\/strong\u003e 85 g per m² with no soil test, once a year in February–March. Go up to 125 g per m² only if a soil test shows low potash.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrawberries:\u003c\/strong\u003e 60 g per m² with no soil test, once a year in March. Go up to 105 g per m² if a soil test shows low potash.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003ePlanting a new fruit tree or bush:\u003c\/strong\u003e mix 35–70 g into the soil from the planting hole (roughly a 1 m² area), and mix it well so no granules touch the roots. Autumn planting is ideal.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFruit in pots (lemons, figs, patio apples and plums)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFruit stays in the same compost for years, so use the lower end of the container rate. Scatter the granules on the compost surface and water in well.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLemons and other citrus:\u003c\/strong\u003e 2.5 g per litre of compost at potting (about 1 level tablespoon per 5 litres). Top up with 10–20 g per 10 litres of compost in spring (March–April) and midsummer (July) only. Keep using a citrus feed through the year; polyhalite doesn't replace it. Water with rainwater where possible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFigs:\u003c\/strong\u003e 2.5 g per litre at potting. Top up with 10 g per 10 litres in April and again in late May, then nothing after midsummer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePatio apples and plums:\u003c\/strong\u003e 2.5 g per litre at potting. Top up with 10–20 g per 10 litres in spring and early summer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYellowing between the veins on older leaves\u003c\/strong\u003e usually means magnesium is short. For a quick fix, use a magnesium-only feed such as Kieserite rather than more polyhalite.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow in chloride:\u003c\/strong\u003e polyhalite is a sulphate mineral with far less chloride than muriate of potash. That makes it a good potash choice for fruit that's sensitive to chloride, such as strawberries, raspberries, redcurrants and gooseberries. Citrus growing advice also says to avoid potash in its chloride form (muriate of potash).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt isn't lime, gypsum or Epsom salt.\u003c\/strong\u003e It always brings potash with it, so don't use it as a straight swap for any of them.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt dissolves gradually\u003c\/strong\u003e, so water it in after spreading.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-step application\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssess your soil.\u003c\/strong\u003e Polyhalite is most useful where calcium, magnesium, potassium or sulphur are running low — typically containers, raised beds, sandy soils and intensively cropped patches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure the rate.\u003c\/strong\u003e A level tablespoon of polyhalite is roughly 12–15g. Use the rates above as a starting point and adjust to crop demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply evenly.\u003c\/strong\u003e Scatter across the surface for containers. Broadcast by hand or spreader for beds. Mix thoroughly with compost for soil mixes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater in.\u003c\/strong\u003e Polyhalite needs soil moisture to begin dissolving and releasing nutrients. Water it in straight after application.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePair with a nitrogen source.\u003c\/strong\u003e Polyhalite carries no N or P. Use it with a Dr Forest blend or another NPK fertiliser for complete crop nutrition.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003ePolyhalite is the natural partner for any nitrogen-led feed. Pair with Dr Forest \u003cstrong\u003eAll Purpose 4-4-4\u003c\/strong\u003e for general gardens, the crop-specific blends (\u003cstrong\u003eTomato\u003c\/strong\u003e, \u003cstrong\u003eRose \u0026amp; Flower\u003c\/strong\u003e, \u003cstrong\u003ePotato\u003c\/strong\u003e) for targeted feeding, or \u003cstrong\u003eSeaweed Powder\u003c\/strong\u003e for biostimulant activity. The calcium content also pairs well with \u003cstrong\u003eSlow Release Humic Acid\u003c\/strong\u003e for long-term soil structure building.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════ TAB 4 — FAQ ═══════════ --\u003e\n\u003cdiv id=\"drf-pl-panel4\" class=\"drf-panel\"\u003e\n\u003ch2\u003eFAQ about this polyhalite fertiliser\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq1\" class=\"drf-faq-q\"\u003eWhat is polyhalite fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThis product is Yorkshire-mined polyhalite fertiliser — one mineral, four nutrients (K, Ca, Mg, S) as sulphates, low chloride, dissolves gradually. Packed in Stockport. For the full definition (formation, mining, evidence), see \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-polyhalite\"\u003eWhat is polyhalite?\u003c\/a\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq2\" class=\"drf-faq-q\"\u003eWhat is polyhalite used for?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003ePolyhalite is used as a base mineral fertiliser to supply potassium, calcium, magnesium and sulphur — the four nutrients most often stripped out of containers, raised beds and intensively cropped soil. Gardeners use it as a potash source low in chloride, for tomatoes and other chloride-sensitive crops, for lawns and turf, and for breaking up heavy clay. It carries no nitrogen or phosphorus, so it's paired with an NPK feed for complete nutrition.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq3\" class=\"drf-faq-q\"\u003eWhat crops benefit most from polyhalite?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eCrops with high calcium, potassium and sulphur demand respond most strongly. A 921-trial meta-analysis found the largest yield gains in potato, peanut, onion and oilseeds. In the garden that means potatoes, tomatoes, peppers, brassicas, onions and other alliums, and tree fruit. Chloride-sensitive crops — tomatoes, strawberries, potatoes and salad leaves — particularly benefit from potash delivered without chloride build-up in the root zone.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq4\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq4\" class=\"drf-faq-q\"\u003eWhere is polyhalite mined?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThis polyhalite is extracted from Boulby Mine on the North Yorkshire coast, over 1,200 metres beneath the North Sea. It is the world's only currently operating commercial polyhalite mine. A second major deposit — Woodsmith Mine, also in North Yorkshire — is under construction and expected to become the largest polyhalite mine in the world.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq5\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq5\" class=\"drf-faq-q\"\u003eIs polyhalite a potash fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes — polyhalite is a type of potash fertiliser. \"Potash\" is the umbrella term for potassium fertilisers, and polyhalite is one of them: it supplies 14% K₂O as potassium sulphate, the same form as sulphate of potash (SOP), low in chloride. Where SOP gives you potash plus sulphur and nothing else, polyhalite gives you potash plus calcium, magnesium and sulphur in one product — so it covers more ground per application if your soil needs more than just potassium.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq6\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq6\" class=\"drf-faq-q\"\u003eHow is polyhalite different from sulphate of potash?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eSulphate of potash (SOP) delivers 50% K₂O and 18% S — two nutrients. Polyhalite delivers 14% K₂O, 17% CaO, 6% MgO and 48% SO₃ — four nutrients. If your only need is concentrated potassium, SOP is the more concentrated source. If you need potassium \u003cem\u003eplus\u003c\/em\u003e calcium, magnesium and sulphur — as most garden soils do — polyhalite delivers all four in one product that dissolves gradually.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq7\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq7\" class=\"drf-faq-q\"\u003eIs polyhalite EU Organic Approved?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. Polyhalite is EU Organic Approved. It is a naturally mined crude salt with no chemical separation or industrial processing, only mechanical crushing and granulation.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq8\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq8\" class=\"drf-faq-q\"\u003eIs polyhalite a complete fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eNo. Polyhalite contains no nitrogen and no phosphorus. It supplies potassium, calcium, magnesium and sulphur only. For a complete feeding programme, combine it with a nitrogen and phosphorus source — a Dr Forest crop-specific blend, or an all-purpose NPK fertiliser.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq9\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq9\" class=\"drf-faq-q\"\u003eWill polyhalite change my soil pH?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eNo. Unlike lime or dolomite, polyhalite delivers calcium and magnesium as sulphates, not carbonates. Sulphates are pH-neutral.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq10\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq10\" class=\"drf-faq-q\"\u003eCan polyhalite prevent blossom end rot?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eBlossom end rot is caused by calcium deficiency in the developing fruit — usually triggered by irregular watering rather than absent soil calcium. Polyhalite supplies 17% CaO in a form that dissolves gradually, holding a steady baseline of available calcium in the root zone. Combined with consistent watering, this significantly reduces the risk of blossom end rot in tomatoes, peppers, courgettes and aubergines.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq11\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq11\" class=\"drf-faq-q\"\u003eHow quickly does polyhalite work?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003ePolyhalite begins releasing nutrients as soon as it contacts soil moisture. University of Nottingham research showed 50–60% of sulphur is immediately plant-available, with the rest releasing gradually across the growing season. Expect visible effects within 2–4 weeks, with benefits continuing for months from a single application.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq12\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq12\" class=\"drf-faq-q\"\u003eIs this the same as Polysulphate?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003ePolysulphate is a branded trade name for polyhalite, marketed by the mining company that extracts it at Boulby. The mineral itself is the same — K₂Ca₂Mg(SO₄)₄·2H₂O. We sell polyhalite directly without commercial rebranding, so you know exactly what you're getting.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq-paa1\" class=\"drf-faq-q\"\u003eIs polyhalite a good fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eIt's a good base mineral, not a complete feed. One granule gives you 14% potash, 17% calcium oxide, 6% magnesium oxide and 48% sulphur trioxide, all as sulphates with virtually no chloride, and it dissolves gradually over the season. It has no nitrogen or phosphorus, so use it alongside an NPK feed. It earns its place in containers, raised beds and hard-cropped plots, and on chloride-sensitive crops such as tomatoes, strawberries and potatoes.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq-paa2\" class=\"drf-faq-q\"\u003eIs polyhalite better for the environment than other fertilisers?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eIt's mined, crushed and granulated, with no chemical refining, so the bag is the mineral as it came out of the ground rather than a chemically manufactured NPK. Because it dissolves gradually rather than all at once, less is lost to leaching than when you stack soluble sulphate of potash, gypsum and Epsom salt to get the same four nutrients. As with any fertiliser, stick to the rate: more than the plants can use helps nobody.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pl-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pl-faq-paa3\" class=\"drf-faq-q\"\u003eWhen should I apply polyhalite?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eIn beds and borders, at planting and then every 6–12 weeks from spring to autumn, at 50–125 g per m². In established pots, every 6–8 weeks through the growing season at 10–30 g per 10-litre pot. On lawns, two or three times a year (spring, summer and autumn) at 35–70 g per m². For clay soil, once a year in autumn or spring at 100–150 g per m². Water it in each time.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"1.5kg","offer_id":44704335790267,"sku":"DF-POLY-1.5","price":10.49,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":44704335823035,"sku":"DF-POLY-4","price":19.35,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":44704335855803,"sku":"DF-POLY-9","price":30.99,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":44740972576955,"sku":"DF-POLY-15","price":44.49,"currency_code":"GBP","in_stock":true},{"title":"30kg","offer_id":57119451447670,"sku":"DF-POLY-30","price":89.99,"currency_code":"GBP","in_stock":true},{"title":"60kg","offer_id":57814955852150,"sku":"DF-POLY-60","price":176.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/organic-granulated-polyhalite-fertiliser-mined-yorkshire-14-338.webp?v=1785512768"},{"product_id":"organic-granulated-volcanic-rock-minerals-basalt-soil-conditioner","title":"Granulated Rock Dust | Volcanic Basalt | Slow-Release","description":"\u003c!-- Dr Forest — Granulated Volcanic Rock Dust Product Page (v2 — Design System v1.0) --\u003e\n\u003c!-- Prefix: drf-gr- · 4-tab layout · Pure CSS radio-input tabs + checkbox FAQ. No JavaScript. Shopify-safe. --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; 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background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 700; }\n  #drf-gr-tab1:checked ~ .drf-panels #drf-gr-panel1,\n  #drf-gr-tab2:checked ~ .drf-panels #drf-gr-panel2,\n  #drf-gr-tab3:checked ~ .drf-panels #drf-gr-panel3,\n  #drf-gr-tab4:checked ~ .drf-panels #drf-gr-panel4,\n  #drf-gr-tab5:checked ~ .drf-panels #drf-gr-panel5 { display: block; }\n\n  \/* ── CALLOUTS (square; light \/ gold \/ dark) ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); color: var(--drf-cream); border-left-color: var(--drf-gold); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout-dark a { color: var(--drf-cream); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; 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color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); font-weight: 600; }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate p:last-child { margin-bottom: 0; }\n  .drf-rate ul { font-size: 0.92em; color: var(--drf-muted); margin: 0.4em 0 0; }\n  .drf-rate ul li { margin-bottom: 0.25em; }\n\n  \/* ── STEPS (square block numbers) ── *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; 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padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\n\n\u003c!-- ===== 4-TAB BODY (Overview \/ The Science \/ How to Use \/ FAQ) ===== --\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-gr-tabset\" id=\"drf-gr-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-gr-tabset\" id=\"drf-gr-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-gr-tabset\" id=\"drf-gr-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-gr-tabset\" id=\"drf-gr-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-gr-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-gr-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-gr-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-gr-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-gr-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eGranulated volcanic rock dust: the slow-release, easy-spread soil remineraliser\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eZeolite-Bearing Volcanic Rock\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e48% Silica\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eSlow-Release Granules\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eTrace Elements\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSpreader-Friendly\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eGranulated volcanic rock dust is crushed volcanic rock pressed into granules, spread on soil to put back the trace minerals that cropping and rain wash out.\u003c\/strong\u003e The rock carries silica, calcium, potassium, iron, magnesium and dozens of trace elements locked in its mineral structure, and soil moisture, root acids and microbes release them slowly over seasons rather than weeks. This is the same rock as our micronised powder, just in a coarser form that goes through a lawn spreader and does not blow about.\u003c\/p\u003e\n\u003cp\u003ePick the granules for lawns, beds and borders, raised-bed fills and planting holes, where you want a mineral reserve that sits in the root zone for years. Pick the \u003ca href=\"\/products\/micronized-volcanic-rock-dust\"\u003emicronised volcanic rock dust\u003c\/a\u003e when you want minerals moving faster, or something you can drench. Plenty of growers use both. One mined mineral, nothing added, bagged by hand in Stockport in 1.5 kg to 15 kg sizes.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e48%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSilica (SiO₂)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e8.3%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCalcium (CaO)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e5.1%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePotassium (K₂O)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e4.1%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eIron (Fe₂O₃)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat volcanic rock dust granules are used for\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemineralising tired beds and vegetable plots\u003c\/strong\u003e — 100–300 g per m² forked into the top few centimetres, once or twice a year, rebuilds the trace element supply that decades of picking and rain have taken out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLawn top dressing\u003c\/strong\u003e — the granules run through a spreader, drop between the blades and weather into the root zone. No white dust on the turf, no cloud when the wind picks up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaised beds and container mixes\u003c\/strong\u003e — bagged compost and peat-free media carry almost no rock minerals. Mixing granules in at build time gives the mix a geological base it would otherwise never have.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTree, shrub, rose and hedge planting\u003c\/strong\u003e — a couple of handfuls in the backfill puts a mineral reserve where the roots will be for the next twenty years.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompost heaps\u003c\/strong\u003e — a heap is warm, damp and acidic, which is exactly the environment that weathers rock fastest. Layered granules come out the other end as mineral-enriched compost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilica supply\u003c\/strong\u003e — the rock is nearly half silica by weight. Plants grown without silicon are structurally weaker and more vulnerable to abiotic stress (Epstein, 1999).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGranulated or micronised: which rock dust do you need?\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eGranulated volcanic rock dust (this product)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCoarse granules with a smaller surface area, so minerals release over months and years rather than weeks.\u003c\/li\u003e\n\u003cli\u003eGoes through a hand or lawn spreader; spreads evenly by hand too.\u003c\/li\u003e\n\u003cli\u003eFar less dusty to handle, store and apply.\u003c\/li\u003e\n\u003cli\u003eThe choice for lawns, top dressing, raised-bed fills, planting holes and compost heaps.\u003c\/li\u003e\n\u003cli\u003eCannot be suspended in water for a drench.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eMicronised volcanic rock dust (the sister product)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFine powder with a very large surface area, so the same rock weathers far faster.\u003c\/li\u003e\n\u003cli\u003eCan be stirred into water and applied as a suspension to the root zone.\u003c\/li\u003e\n\u003cli\u003eDusty. Wear a mask when mixing it dry.\u003c\/li\u003e\n\u003cli\u003eThe choice when you want minerals moving this season, or you are treating pots and seed trays.\u003c\/li\u003e\n\u003cli\u003eBoth together: micronised for the near term, granules for the reserve.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003cp\u003eWeighed and bagged by hand in small batches at the Dr Forest unit in Stockport, Greater Manchester. No coatings and no animal by-products, so it suits vegan and no-dig gardens. Rock dust is not a fertiliser and will not replace one; it sits underneath your feeding as the mineral base. New to the idea? Our guide to \u003ca href=\"\/blogs\/the-dr-forest-blog\/volcanic-rock-dust-guide\"\u003evolcanic rock dust, silicon and trace minerals\u003c\/a\u003e covers what it can and cannot do. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 2 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-gr-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eThe science of volcanic rock dust: why the slow route is the point\u003c\/h2\u003e\n\u003ch3\u003eWhat this rock actually is\u003c\/h3\u003e\n\u003cp\u003eThis is a zeolite-bearing volcanic silicate that cooled below the surface rather than erupting, which left its zeolite minerals intact. Volcanic rock of this kind is the parent material of many of the world's most productive farmed soils. Geologists class it as mafic, rich in magnesium and iron, with minerals that dissolve far more readily than the quartz and potassium feldspar in granite. That distinction matters. In a review of 48 crop trials with silicate rock powders, the consistent positive results came from mafic volcanic rocks; granites were patchy at best (Swoboda et al., 2022).\u003c\/p\u003e\n\u003cp\u003eOur granules are this volcanic rock, crushed and pressed into a spreadable pellet. The mineral content is identical to the \u003ca href=\"\/products\/micronized-volcanic-rock-dust\"\u003emicronised version\u003c\/a\u003e; only the particle size changes, and particle size sets the release speed. The more surface a rock exposes to soil water, roots and microbes, the faster it gives up its minerals (Harley and Gilkes, 2000). A granule exposes far less surface per gram than a powder, so it weathers slowly and lasts.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eComposition and nutrient content\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eConstituent\u003c\/th\u003e\n\u003cth\u003eContent\u003c\/th\u003e\n\u003cth\u003eRole in the garden\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilica (SiO₂)\u003c\/td\u003e\n\u003ctd\u003e48%\u003c\/td\u003e\n\u003ctd\u003eSource of plant-available silicon: stem strength, stress tolerance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium (CaO)\u003c\/td\u003e\n\u003ctd\u003e8.3%\u003c\/td\u003e\n\u003ctd\u003eCell walls; helps soil aggregates hold together\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotassium (K₂O)\u003c\/td\u003e\n\u003ctd\u003e5.1%\u003c\/td\u003e\n\u003ctd\u003eWater regulation and sugar transport, released slowly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron (Fe₂O₃)\u003c\/td\u003e\n\u003ctd\u003e4.1%\u003c\/td\u003e\n\u003ctd\u003eChlorophyll synthesis\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium (MgO)\u003c\/td\u003e\n\u003ctd\u003e1%\u003c\/td\u003e\n\u003ctd\u003eThe central atom in chlorophyll\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManganese\u003c\/td\u003e\n\u003ctd\u003e0.2%\u003c\/td\u003e\n\u003ctd\u003ePhotosynthesis and enzyme activation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTrace elements\u003c\/td\u003e\n\u003ctd\u003eBroad range\u003c\/td\u003e\n\u003ctd\u003eZinc, copper, boron, molybdenum, titanium and others, in small amounts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eRead that table the right way round. The potassium and calcium are real, but they sit in mineral lattices and come out slowly, so rock dust will not feed a hungry tomato this month. What it does is put the full range of elements back into the soil in a form that does not leach. The rock also carries a zeolite fraction; zeolites hold positively charged nutrient ions in their crystal structure and give them up as roots pull on them.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eRock dust is a deposit, not a withdrawal. You are putting minerals into the soil bank and letting the soil decide when to spend them.\u003c\/div\u003e\n\u003ch3\u003eMechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eWeathering releases cations and raises exchange capacity\u003c\/h4\u003e\n\u003cp\u003eFinely ground silicate rock added to seven highly weathered Queensland soils lifted pH, increased cation exchange capacity and raised exchangeable calcium, magnesium and potassium within three months. Only a fraction of the applied cations had converted to exchangeable form, so most of the reserve was still in the rock, and the gains survived leaching equivalent to a full tropical wet season's rain (Gillman et al., 2002, \u003cem\u003eApplied Geochemistry\u003c\/em\u003e). A 24-month incubation found the effects still strengthening at month 24 (Anda et al., 2015, \u003cem\u003eCatena\u003c\/em\u003e). Slow, and cumulative. That is the point of the granule.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eRoots and microbes speed the rock up\u003c\/h4\u003e\n\u003cp\u003eIn the laboratory, silicate minerals dissolve slowly. In soil, root exudates and microbial organic acids pull ions off mineral surfaces far faster than water alone, which is why field weathering rates repeatedly outrun laboratory predictions (Harley and Gilkes, 2000; Swoboda et al., 2022). The practical consequence: rock dust does most in a biologically active soil with compost or a microbial input alongside it, and least in a sterile, dry one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eSilicon builds stronger, more stress-tolerant plants\u003c\/h4\u003e\n\u003cp\u003eSilicon is not on the essential nutrient list, but plants grown without it are structurally weaker, more vulnerable to metal toxicity and abnormal in growth and reproduction compared with plants that have it (Epstein, 1999, \u003cem\u003eAnnual Review of Plant Physiology and Plant Molecular Biology\u003c\/em\u003e). Volcanic silicate rock is the practical source. In a UK controlled-environment trial, relatively coarse crushed silicate rock on a clay-loam soil raised shoot silicon in sorghum by 26% and yield by 21%, with no potassium or phosphorus fertiliser added, though at a heavy 10 kg per m² (Kelland et al., 2020, \u003cem\u003eGlobal Change Biology\u003c\/em\u003e).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eA UK field result in a temperate climate\u003c\/h4\u003e\n\u003cp\u003eMost rock dust trials come from the tropics; the 2022 review called the temperate evidence inconclusive. The best British data so far is a field trial on a sandy clay-loam in north-east England. Crushed silicate rock incorporated at seeding raised spring oat yields by 20.5% under direct drilling and 9.3% after ploughing, lifted soil pH by 0.2 to 0.3 units after 256 days and increased potassium and calcium in the crop, with no build-up of arsenic, cadmium, chromium or nickel in the grain (Skov et al., 2024, \u003cem\u003ePLOS ONE\u003c\/em\u003e). The rate was 18.86 tonnes per hectare, roughly 1.9 kg per m², far above garden rates, so read it as evidence that the mechanism works in a British field and do not expect the same yield lift from 200 g.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003ePotassium from rock, without chloride or salt\u003c\/h4\u003e\n\u003cp\u003eSilicate rocks are a legitimate potassium source, and the reactive ones release it far faster than granite: nepheline dissolves around 100 times more quickly than potassium feldspar (Manning, 2010, \u003cem\u003eAgronomy for Sustainable Development\u003c\/em\u003e). The potassium arrives without the chloride load of muriate of potash and without raising the soil's salt index, which is why rock dust can go on year after year.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eSwoboda, P., Döring, T.F. and Hamer, M. (2022). Remineralizing soils? The agricultural usage of silicate rock powders: A review. \u003cem\u003eScience of the Total Environment\u003c\/em\u003e, 807, 150976.\u003c\/li\u003e\n\u003cli\u003eSkov, K., Wardman, J., Healey, M. et al. (2024). Initial agronomic benefits of enhanced weathering using basalt: A study of spring oat in a temperate climate. \u003cem\u003ePLOS ONE\u003c\/em\u003e, 19(3), e0295031.\u003c\/li\u003e\n\u003cli\u003eKelland, M.E., Wade, P.W., Lewis, A.L. et al. (2020). Increased yield and CO₂ sequestration potential with the C4 cereal \u003cem\u003eSorghum bicolor\u003c\/em\u003e cultivated in basaltic rock dust-amended agricultural soil. \u003cem\u003eGlobal Change Biology\u003c\/em\u003e, 26(6), 3658–3676.\u003c\/li\u003e\n\u003cli\u003eGillman, G.P., Burkett, D.C. and Coventry, R.J. (2002). Amending highly weathered soils with finely ground basalt rock. \u003cem\u003eApplied Geochemistry\u003c\/em\u003e, 17(8), 987–1001.\u003c\/li\u003e\n\u003cli\u003eAnda, M., Shamshuddin, J. and Fauziah, C.I. (2015). Improving chemical properties of a highly weathered soil using finely ground basalt rocks. \u003cem\u003eCatena\u003c\/em\u003e, 124, 147–161.\u003c\/li\u003e\n\u003cli\u003eHarley, A.D. and Gilkes, R.J. (2000). Factors influencing the release of plant nutrient elements from silicate rock powders: a geochemical overview. \u003cem\u003eNutrient Cycling in Agroecosystems\u003c\/em\u003e, 56(1), 11–36.\u003c\/li\u003e\n\u003cli\u003eManning, D.A.C. (2010). Mineral sources of potassium for plant nutrition. A review. \u003cem\u003eAgronomy for Sustainable Development\u003c\/em\u003e, 30(2), 281–294.\u003c\/li\u003e\n\u003cli\u003eEpstein, E. (1999). Silicon. \u003cem\u003eAnnual Review of Plant Physiology and Plant Molecular Biology\u003c\/em\u003e, 50, 641–664.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"margin-top: 0.6em;\"\u003eTrial figures describe the published literature on crushed silicate rock, mostly at agricultural rates well above those on this page. They are not product-specific yield guarantees.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-gr-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use volcanic rock dust granules: application rates and guide\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eGranular: apply dry and water in\u003c\/span\u003e\n\u003cp\u003eThis is a dry granular product. Scatter on the soil surface, mix into growing media, or broadcast across beds and lawns. Water in well after application. The rock weathers through contact with soil moisture, so the more thoroughly it is incorporated into moist soil, the faster mineral release begins. The granules are far less dusty than micronised rock dust, but we still recommend wearing a mask if mixing large quantities in an enclosed space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eA mineral base, not a fertiliser\u003c\/span\u003e\n\u003cp\u003eRock dust carries almost no nitrogen or phosphorus and releases its potassium slowly. \u003cstrong\u003eKeep feeding as normal\u003c\/strong\u003e and treat the granules as the layer underneath. Minerals in rock dust are released through weathering, a process that is greatly accelerated by soil micro-organisms. Bacteria and fungi produce organic acids that dissolve mineral surfaces far faster than water alone, so rock dust is most effective in soil with active biology: soil enriched with compost, treated with \u003ca href=\"\/products\/bokashi-soil-conditioner\"\u003eGrow-Kashi\u003c\/a\u003e, or regularly fed with organic matter. In biologically inert growing media, mineral release will be slower. For the fastest results, combine rock dust with a biological inoculant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication rates\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eOutdoor beds, borders and vegetable plots\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100–300 g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e 1–2 times per year (spring and autumn)\u003c\/div\u003e\n\u003cp\u003eScatter evenly over the soil surface and fork or rake lightly into the top few centimetres. Water in well. Use the higher rate (300 g\/m²) for first-time applications on soils that have never received rock dust, and the lower rate (100 g\/m²) for annual maintenance applications on previously treated soil. The minerals accumulate over successive seasons; each application builds on the previous one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003ePotting soil and container media\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 5–15 g per litre of growing medium  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once when building the soil mix\u003c\/div\u003e\n\u003cp\u003eMix thoroughly into potting compost or peat-free media before planting. The granules provide a long-term mineral reservoir that continues releasing trace elements throughout the growing season and beyond. Use the higher rate for mineral-poor media (peat-free compost) and the lower rate for loam-based or compost-rich mixes that already contain some minerals.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawn top dressing\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100–200 g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e 1–2 times per year (spring and autumn)\u003c\/div\u003e\n\u003cp\u003eBroadcast evenly across the lawn. The granular form is easy to spread by hand or with a lawn spreader, and is far less messy than micronised powder on turf. Water in well after application. The granules settle between grass blades and weather into the root zone over successive months, providing sustained trace mineral supply and silica for stronger grass. Our guide to \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-top-dress\"\u003etop dressing a lawn\u003c\/a\u003e covers the method.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eCompost heap enrichment\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e A few handfuls per barrowload of material  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Each time you add material\u003c\/div\u003e\n\u003cp\u003eSprinkle rock dust granules between layers of compost material. The heat, moisture and microbial acidity within an active compost heap weather the rock particles far faster than they would weather in open soil, so mineral release is much quicker. The finished compost will be enriched with the full rock-dust mineral spectrum.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTree, shrub and hedge planting\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 2–3 handfuls (50–100 g) mixed into backfill  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once at planting\u003c\/div\u003e\n\u003cp\u003eMix into the backfill soil when planting trees, shrubs, roses and hedging. The granules provide a mineral reservoir that persists in the root zone for years, continuing to release trace elements as the tree or shrub establishes. Particularly useful for long-lived plantings where you want sustained mineral supply without repeat applications.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRaised beds: initial construction\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 200–300 g per m² mixed into the bed fill  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once when building, then 100 g\/m² annually\u003c\/div\u003e\n\u003cp\u003eWhen constructing a new raised bed, mix rock dust granules into the soil or compost fill before planting. This provides the geological mineral base that raised bed media almost always lack. Top up with 100 g\/m² each spring as part of your annual bed preparation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eStep-by-step application\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure the correct amount.\u003c\/strong\u003e For beds and lawns: 100–300 g per m². For soil mixes: 5–15 g per litre. A generous handful is approximately 50–75 g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScatter or mix evenly.\u003c\/strong\u003e For beds and lawns, scatter as evenly as possible and fork or rake in lightly. For soil building, add to the growing medium and mix thoroughly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater in well.\u003c\/strong\u003e The rock weathers through contact with moisture. Thorough watering after application begins the weathering process and starts mineral release. Rainfall will continue the process naturally.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply 1–2 times per year.\u003c\/strong\u003e Rock dust is a long-term soil investment, not a regular feed. Spring and autumn applications build cumulative mineral reserves over successive seasons.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStore dry.\u003c\/strong\u003e Keep in a sealed bag in a dry place. The granules are inert geological material with an indefinite shelf life; they will not degrade, clump or lose effectiveness in storage.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003eFor a complete remineralisation, run the granules alongside Dr Forest \u003ca href=\"\/products\/micronized-volcanic-rock-dust\"\u003eMicronised Volcanic Rock Dust\u003c\/a\u003e: the powder for minerals this season, the granules for the long-term reservoir. \u003ca href=\"\/products\/bokashi-soil-conditioner\"\u003eGrow-Kashi\u003c\/a\u003e brings the microbial activity that weathers rock fastest. \u003ca href=\"\/products\/soil-conditioner-mineral-mix\"\u003eMineral Mix\u003c\/a\u003e extends the programme to clay minerals, gypsum and sea-shell meal, and a few handfuls of \u003ca href=\"\/products\/organic-scottish-seaweed-kelp-meal-fertiliser\"\u003eScottish Seaweed Meal\u003c\/a\u003e in the compost heap with the granules makes for a properly mineral-rich finished compost.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage and handling\u003c\/span\u003e\n\u003cp\u003eAnywhere dry, indefinitely. Keep the bag sealed so the granules stay free-flowing for the spreader, and out of reach of children and pets as you would any garden product.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 4 — FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-gr-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions about volcanic rock dust\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq1\"\u003eIs volcanic rock dust a fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNot in the NPK sense. It carries very little nitrogen or phosphorus, and its potassium comes out slowly. What it supplies is silica, calcium, iron, magnesium and a wide spread of trace elements in a form that does not leach. Use it alongside a fertiliser: the fertiliser feeds the crop this season, the rock dust rebuilds the soil's mineral base underneath.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq2\"\u003eWhat is the difference between granulated and micronised rock dust?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eSame rock, different particle size. The micronised powder has a huge surface area and weathers within weeks; it is the fast-acting option and can be stirred into water. The granules release over months to years and act as the reserve, and they spread cleanly on lawns and beds. Many customers use the \u003ca href=\"\/products\/micronized-volcanic-rock-dust\"\u003emicronised rock dust\u003c\/a\u003e for the first season and the granules for the long haul.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq3\"\u003eHow much rock dust per square metre?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e100–300 g per m² on beds, borders and vegetable plots, once or twice a year in spring and autumn. Use the top of that range the first time on soil that has never had rock dust, and 100 g\/m² for annual maintenance. Lawns take 100–200 g per m². A generous handful is roughly 50–75 g.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq4\"\u003eCan I use rock dust granules on my lawn?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes, and it is what the granular form is best at. Broadcast 100–200 g per m² by hand or through a lawn spreader and water in well. The granules fall between the grass blades without coating the leaf the way a powder does, then weather into the root zone over the following months. Apply in spring and\/or autumn.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq5\"\u003eHow quickly will I see results?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eSlowly. Granules release minerals over months to years as they weather, so effects build over the first season and stack up with each annual application. Look for steadier growth and gradually better soil; there is no visible jump. If you want minerals moving this season, add the micronised powder alongside the granules.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq6\"\u003eDoes rock dust really work in the UK?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThe strongest evidence comes from tropical soils, and a 2022 review of 48 trials called the temperate evidence inconclusive. Since then a field trial in north-east England has shown crushed silicate rock raising spring oat yields by 9–20%, lifting soil pH and increasing potassium and calcium in the crop, at a rate of around 1.9 kg per m². Our garden rates are a fraction of that, so we sell it as a long-term soil investment.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq7\"\u003eWhat does the silica do for plants?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003ePlants take up silicon from soil water and lay it down in cell walls. Plants grown without it are structurally weaker, more vulnerable to metal toxicity and abnormal in growth and reproduction. This rock is about 48% silica, and a UK trial found crushed silicate rock raised shoot silicon in sorghum by 26%.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq8\"\u003eWill it change my soil pH?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThe rock is alkaline (pH 11 in water) and does nudge pH upward over time; the English field trial recorded a rise of 0.2 to 0.3 units after 256 days at a heavy agricultural rate. At garden rates the shift is small and gradual. If you are deliberately keeping a bed acidic for blueberries or rhododendrons, apply lightly and check your pH each spring.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq9\"\u003eIs it safe for children, pets, bees and wildlife?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is crushed rock with nothing added. Keep the bag out of reach as you would any garden product, and wear a mask if you are mixing a lot of it in an enclosed space, but there is nothing in it to trouble bees, birds or a dog that walks across a treated lawn.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-gr-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-gr-faq10\"\u003eHow should I store it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAnywhere dry. It is inert geological material with an indefinite shelf life. It will not degrade, spoil or lose effectiveness however long it sits in the shed. Keep the bag sealed so the granules stay free-flowing.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ===== END 4-TAB BODY ===== --\u003e\n\n\n\n\n\u003c!-- PAA FAQ additions organic-granulated-volcanic-rock-minerals-basalt-soil-conditioner 2026-10-07 merge --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-vr-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-vr-faq-paa1\" class=\"drf-faq-q\"\u003eWhere can I buy basalt rock dust in the UK?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eHere. This is granulated diabase basalt in 1.5 kg, 4 kg, 9 kg and 15 kg bags, posted to any UK address. If you want a fine powder for drenches and sprays rather than granules for spreading, we also sell \u003ca href=\"\/products\/micronized-volcanic-rock-dust\"\u003emicronised rock dust\u003c\/a\u003e from the same basalt source.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-vr-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-vr-faq-paa2\" class=\"drf-faq-q\"\u003eWhat is granulated rock dust used for?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eLong-term remineralising of beds, borders, raised beds and lawns. It adds 48% silica, 8.3% calcium, 5.1% potassium and 4.1% iron, plus magnesium, manganese and more than 60 trace elements, and it releases them slowly as the granules weather. The granules suit lawns because they settle between the grass blades without coating the leaves. Mix it into the fill when you build a raised bed. It isn't an NPK feed, so carry on feeding as normal.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-vr-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-vr-faq-paa3\" class=\"drf-faq-q\"\u003eHow much rock dust should I add to my soil?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eFor beds and borders, 100–300 g per m². Use 300 g the first time on soil that has never had rock dust, then 100 g per m² each year to maintain it. For lawns, 100–200 g per m² once or twice a year, in spring and autumn, watered in. For a new raised bed, mix 200–300 g per m² into the fill before planting, then top up with 100 g per m² each spring.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"1.5kg","offer_id":44736786825403,"sku":"DF-BASALTGR-1.5","price":11.0,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":44736786858171,"sku":"DF-BASALTGR-4","price":22.0,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":44736786890939,"sku":"DF-BASALTGR-9","price":40.49,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":56320550076790,"sku":"DF-BASALTGR-15","price":60.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/organic-granulated-volcanic-rock-minerals-basalt-soil-conditioner-815-square.webp?v=1791883869"},{"product_id":"rock-phosphate-fertiliser-uk-31","title":"Rock Phosphate Fertiliser | 31% P₂O₅, 49% CaO, Micronised","description":"\u003c!-- Dr Forest — Rock Phosphate Fertiliser (Micro Cal-Phos) Product Page (v2 — Design System v1.0) — prefix drf-rp- --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; font-weight: 600; font-size: 0.85em; letter-spacing: 0.2em; text-transform: uppercase; 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color: var(--drf-gold); line-height: 1; }\n  .drf-ing-pct { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--drf-gold); }\n  .drf-ing h4 { margin: 0.2em 0 0.3em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-ing p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── MECHANISM CARDS ── *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); font-weight: 600; }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate p:last-child { margin-bottom: 0; }\n  .drf-rate ul { font-size: 0.92em; color: var(--drf-muted); margin: 0.4em 0 0; }\n  .drf-rate ul li { margin-bottom: 0.25em; }\n\n  \/* ── STEPS (square block numbers) ── *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.9em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST (1px hairline borders, alternating gold \/ green) ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* ── COMPARISON BOXES (stack vertically) ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-rp-tabset\" id=\"drf-rp-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-rp-tabset\" id=\"drf-rp-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-rp-tabset\" id=\"drf-rp-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-rp-tabset\" id=\"drf-rp-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-rp-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-rp-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-rp-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-rp-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-rp-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eRock phosphate fertiliser: micronised soft rock phosphate with 31% P₂O₅ and 49% CaO\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003e31% Total P₂O₅\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e49% Calcium (CaO)\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eMicronised Powder\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eMined Mineral · Vegan\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSoil Mix · Top Dress · Drench\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eRock phosphate fertiliser is a natural calcium phosphate mineral, quarried and ground, that supplies phosphorus and calcium to the soil in one slow-release powder.\u003c\/strong\u003e Phosphorus runs the energy side of the plant: root growth, flower initiation and fruit fill. Calcium builds cell walls. This is a soft rock phosphate micronised to a very fine powder, which is what lets it release usefully in the first season rather than over a decade, and lets you apply it as a drench as well as a dry amendment.\u003c\/p\u003e\n\u003cp\u003eAlso sold as Micro Cal-Phos, it analyses at 31% total P₂O₅ and 49% CaO, with up to 20% of the P₂O₅ soluble in the 2% formic acid test used for soft rock phosphate. A single mined ingredient, no acid treatment, no additives, so it suits vegan growing. Packed by hand in Stockport, Greater Manchester, in 500 g, 1.5 kg, 3 kg, 9 kg and 18 kg sizes.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e31%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eTotal P₂O₅\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eUp to 20%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eFormic-acid soluble P₂O₅\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e49%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCalcium (CaO)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e0-31-0\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNPK profile\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat is rock phosphate used for in the garden?\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransplanting\u003c\/strong\u003e — worked into the planting hole or soil mix so phosphorus sits exactly where new roots grow first\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlowering and fruit set\u003c\/strong\u003e — phosphorus demand peaks at bud initiation and during fruit fill; apply before that point\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoot crops\u003c\/strong\u003e — carrots, parsnips, beetroot and potatoes respond to phosphorus at sowing or planting with larger, denser roots\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeedlings\u003c\/strong\u003e — small root systems reach very little soil phosphorus, so a little in the seed compost covers the gap\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhosphorus deficiency\u003c\/strong\u003e — purple or reddish undersides on leaves and stems, late flowering and poor fruit set are the usual signs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-calcium soils\u003c\/strong\u003e — at 49% CaO this is one of the highest-calcium mineral inputs you can buy, without the strong liming effect of a carbonate\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew beds\u003c\/strong\u003e — a long-term phosphorus and calcium reserve for no-dig beds and allotment ground\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy micronised rather than ordinary ground rock phosphate?\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eMicronised soft rock phosphate (this product)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVery fine particle size, so far more mineral surface is exposed to soil water, root acids and microbes\u003c\/li\u003e\n\u003cli\u003eUp to 20% of the P₂O₅ is formic-acid soluble, the fraction that counts for the coming season\u003c\/li\u003e\n\u003cli\u003eDisperses in water: usable as a soil drench at 1–2 g per litre, as well as in the soil mix\u003c\/li\u003e\n\u003cli\u003eStill leaves a slow-release reserve behind for later seasons\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eStandard ground rock phosphate\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCoarser grind, typically 100–500 microns and upwards\u003c\/li\u003e\n\u003cli\u003eReleases phosphorus over years; little help for a deficiency this season\u003c\/li\u003e\n\u003cli\u003eCannot be suspended in water for drench application\u003c\/li\u003e\n\u003cli\u003eSame raw mineral, similar total analysis on paper; the difference is how much you get this year\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003cp\u003eDr Forest is a small-batch fertiliser maker in Stockport, Greater Manchester. This rock phosphate is a single quarried mineral, ground with nothing added, weighed and packed by hand. For where phosphorus fits alongside nitrogen and potash, read \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-a-bloom-fertiliser\"\u003eWhat is a bloom fertiliser?\u003c\/a\u003e, which covers available versus total P. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 2 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-rp-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eThe science of rock phosphate: why particle size decides how much phosphorus you actually get\u003c\/h2\u003e\n\u003ch3\u003eWhat soft rock phosphate actually is\u003c\/h3\u003e\n\u003cp\u003eRock phosphate is a sedimentary calcium phosphate mineral. This one is a natural limestone phosphate extracted from the quarry by mechanical means only: crushing, classification and sieving. No acid, no heat, no additives, so the mineral matrix is as it came out of the ground. Declared analysis: total P₂O₅ 29–31%, CaO 49%, with trace MgO (0.20%), K₂O (0.05%) and iron oxide from the deposit.\u003c\/p\u003e\n\u003cp\u003eParticle size matters because rock phosphate is sparingly soluble in plain water. What breaks it down is acidity: protons and organic acids released by roots and soil microbes, plus slow weathering. The finer the particle, the more surface those acids can attack, and the larger the fraction that releases in a season. The FAO review of phosphate rocks for direct application puts it plainly: solubility increases as particle size decreases, and the historic EU standard for soft ground rock phosphate required 90% of the material to pass a 0.063 mm sieve for that reason.\u003csup\u003e[6]\u003c\/sup\u003e Mycorrhizal fungi work from the other side, reaching soil the roots never touch; see \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-are-mycorrhizal-fungi-a-guide-for-uk-gardeners\"\u003eWhat are mycorrhizal fungi?\u003c\/a\u003e\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eComposition and nutrient content\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eNutrient\u003c\/th\u003e\n\u003cth\u003eDeclared analysis\u003c\/th\u003e\n\u003cth\u003eForm\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhosphorus (total P₂O₅)\u003c\/td\u003e\n\u003ctd\u003e29–31%\u003c\/td\u003e\n\u003ctd\u003eCalcium phosphate mineral, slow release\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhosphorus soluble in 2% formic acid\u003c\/td\u003e\n\u003ctd\u003e11.3–20% P₂O₅\u003c\/td\u003e\n\u003ctd\u003eThe fraction available in the coming season\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium (CaO)\u003c\/td\u003e\n\u003ctd\u003e49%\u003c\/td\u003e\n\u003ctd\u003eCalcium phosphate, mild liming effect\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium (MgO)\u003c\/td\u003e\n\u003ctd\u003e0.20%\u003c\/td\u003e\n\u003ctd\u003eTrace, naturally occurring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotassium (K₂O)\u003c\/td\u003e\n\u003ctd\u003e0.05%\u003c\/td\u003e\n\u003ctd\u003eTrace, naturally occurring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron (Fe₂O₃)\u003c\/td\u003e\n\u003ctd\u003eTrace\u003c\/td\u003e\n\u003ctd\u003eNaturally occurring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe two phosphorus figures mean different things. Total P₂O₅ is everything in the rock, including phosphate locked in the crystal that only comes out over years. The 2% formic acid test is the standard for soft ground rock phosphate in EU fertiliser law; formic acid stands in for the acids roots and fungi produce, so it estimates what a plant can reach in a season. Up to 20% of this material passes that test. Nitrogen and potassium are effectively absent: this is a phosphorus and calcium input to add to a feed, not a feed on its own.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eThe total phosphorus on the bag is the reserve. The formic-acid soluble figure is what you get this year.\u003c\/div\u003e\n\u003ch3\u003eMechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eMost soil phosphorus is locked up, so roots have to work for it\u003c\/h4\u003e\n\u003cp\u003eVance, Uhde-Stone and Allan (2003, \u003cem\u003eNew Phytologist\u003c\/em\u003e) review how plants cope with a nutrient that is abundant in soil yet largely unavailable, bound to iron, aluminium and calcium. Roots exude organic acids that chelate those metals and free phosphate, and around 80% of land plants also rely on mycorrhizal fungi for phosphorus. A finely ground calcium phosphate gives those mechanisms far more surface to work on.\u003csup\u003e[1]\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eRoot acidity and organic acids dissolve calcium phosphate\u003c\/h4\u003e\n\u003cp\u003eHinsinger (2001, \u003cem\u003ePlant and Soil\u003c\/em\u003e) reviews rhizosphere phosphorus chemistry: soil solution P is governed by pH, competing anions and the concentration of calcium, iron and aluminium, and roots alter all three by releasing protons, carbon dioxide and organic ligands. That is what turns a rock phosphate particle into plant-available phosphate, and it runs faster on a fine powder than on a coarse grit.\u003csup\u003e[2]\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eMycorrhizal fungi deliver phosphorus the roots cannot reach\u003c\/h4\u003e\n\u003cp\u003eSmith and Smith (2011, \u003cem\u003eAnnual Review of Plant Biology\u003c\/em\u003e) show that the mycorrhizal pathway for phosphorus uptake operates whether or not the plant shows a visible growth response, with hyphae drawing phosphate from well beyond the root depletion zone. On a slow-release mineral, an established fungal network is one of the main routes by which the phosphorus becomes useful.\u003csup\u003e[3]\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eHigh soluble phosphate switches the fungal partnership off\u003c\/h4\u003e\n\u003cp\u003eBreuillin and colleagues (2010, \u003cem\u003eThe Plant Journal\u003c\/em\u003e) found that phosphate supply systemically inhibits arbuscular mycorrhizal development in petunia and represses the genes involved in mycorrhizal functioning. Well-fed plants stop paying for the fungus. Hence the caution on the How to Use tab about the first 6–8 weeks after inoculating: a slow-release mineral is far gentler than soluble phosphate, but the principle holds.\u003csup\u003e[4]\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eCalcium is structural, and it does not move once it is in place\u003c\/h4\u003e\n\u003cp\u003eWhite and Broadley (2003, \u003cem\u003eAnnals of Botany\u003c\/em\u003e) describe calcium's structural roles in cell walls and membranes and list blossom end rot in tomato, tip burn in lettuce and bitter pit in apple among the disorders that follow local calcium shortage. Ho and White (2005, \u003cem\u003eAnnals of Botany\u003c\/em\u003e) go further on blossom end rot: the fast-expanding end of the fruit runs short of calcium even when the soil has plenty. Steady watering matters as much as supply, which is why we call this a long-term calcium builder rather than a quick fix.\u003csup\u003e[5][7]\u003c\/sup\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eVance, C.P., Uhde-Stone, C. \u0026amp; Allan, D.L. (2003). Phosphorus acquisition and use: critical adaptations by plants for securing a nonrenewable resource. \u003cem\u003eNew Phytologist\u003c\/em\u003e, 157(3), 423–447.\u003c\/li\u003e\n\u003cli\u003eHinsinger, P. (2001). Bioavailability of soil inorganic P in the rhizosphere as affected by root-induced chemical changes: a review. \u003cem\u003ePlant and Soil\u003c\/em\u003e, 237(2), 173–195.\u003c\/li\u003e\n\u003cli\u003eSmith, S.E. \u0026amp; Smith, F.A. (2011). Roles of arbuscular mycorrhizas in plant nutrition and growth: new paradigms from cellular to ecosystem scales. \u003cem\u003eAnnual Review of Plant Biology\u003c\/em\u003e, 62, 227–250.\u003c\/li\u003e\n\u003cli\u003eBreuillin, F. et al. (2010). Phosphate systemically inhibits development of arbuscular mycorrhiza in \u003cem\u003ePetunia hybrida\u003c\/em\u003e and represses genes involved in mycorrhizal functioning. \u003cem\u003eThe Plant Journal\u003c\/em\u003e, 64(6), 1002–1017.\u003c\/li\u003e\n\u003cli\u003eWhite, P.J. \u0026amp; Broadley, M.R. (2003). Calcium in plants. \u003cem\u003eAnnals of Botany\u003c\/em\u003e, 92(4), 487–511.\u003c\/li\u003e\n\u003cli\u003eZapata, F. \u0026amp; Roy, R.N. (eds) (2004). \u003cem\u003eUse of phosphate rocks for sustainable agriculture\u003c\/em\u003e. FAO Fertilizer and Plant Nutrition Bulletin 13. Rome: FAO\/IAEA.\u003c\/li\u003e\n\u003cli\u003eHo, L.C. \u0026amp; White, P.J. (2005). A cellular hypothesis for the induction of blossom-end rot in tomato fruit. \u003cem\u003eAnnals of Botany\u003c\/em\u003e, 95(4), 571–581.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"margin-top: 0.6em;\"\u003eFigures describe the published literature on rock phosphate and plant phosphorus nutrition and are not product-specific yield guarantees.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-rp-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use rock phosphate fertiliser: application rates, methods and timing\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eMeasuring guide\u003c\/span\u003e\n\u003cp\u003eAt bulk density of 1.20 g\/cm³: 1 ml ≈ 1.2 g. A level teaspoon (5 ml) ≈ 6 g. A level tablespoon (15 ml) ≈ 18 g. For liquid applications, weighing on a digital scale gives the most accurate results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePre-slurry before liquid application\u003c\/span\u003e\n\u003cp\u003eWhen using as a soil drench, mix the powder into a small amount of water first to form a smooth slurry, then add to the full application volume and stir well. This ensures even distribution of mineral particles. \u003cstrong\u003eStir or shake before each application pass to prevent settling\u003c\/strong\u003e: this is a suspension, not a solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication rates\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSoil mix incorporation, before planting\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1.5–3 ml per litre of soil (~1.8–3.6 g\/L)  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e At preparation\u003c\/div\u003e\n\u003cp\u003eMix evenly through soil or potting compost before planting. Use 1.5 ml\/L for already-fertile growing media or non-fruiting plants. Use 3 ml\/L for phosphorus-deficient compost, new media with no existing reserves, or heavy-feeding fruiting crops like tomatoes and peppers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eOutdoor beds and borders\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 50–150 g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 6–12 weeks during growing season\u003c\/div\u003e\n\u003cp\u003eRake lightly into the soil surface or apply before rain. Use 50 g\/m² as a maintenance rate on established beds; up to 150 g\/m² when building fertility in new or depleted ground or correcting visible phosphorus deficiency.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTop dressing, established containers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 0.2–0.5 g per litre of soil volume  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 6–8 weeks\u003c\/div\u003e\n\u003cp\u003eApply to the soil surface around the base of plants and water in thoroughly. For a standard 10 L pot, this is approximately 2–5 g total. Water the plant first, apply the top dressing, then water again to carry the mineral down to the root zone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLiquid soil drench\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–2 g per litre of water  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 3–4 weeks\u003c\/div\u003e\n\u003cp\u003ePre-slurry the measured powder in a small amount of warm water, then add to the full volume and stir thoroughly. Use 1 g\/L for routine maintenance; 2 g\/L for correcting active phosphorus or calcium deficiency. Apply to moist soil at the root zone, not to dry soil. Stir before each pass as particles will settle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTrees and shrubs\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 2–5 kg per tree  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once annually in early spring\u003c\/div\u003e\n\u003cp\u003eApply around the drip line (outer edge of canopy), not tight against the trunk. Work lightly into the soil surface and water in well. For newly planted trees, incorporate 500 g–1 kg into the planting hole at planting time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTransplant boost\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–2 g mixed into the planting hole  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e At planting\u003c\/div\u003e\n\u003cp\u003eWork directly into the soil at root level before setting the plant. Delivers phosphorus exactly where new roots will grow first. Particularly effective for tomatoes, peppers, aubergines, courgettes, and all fruiting crops.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eOn fruit trees and soft fruit\u003c\/h3\u003e\n\u003cp\u003eEstablished fruit needs very little phosphate, and many long-cultivated gardens already have plenty. \u003cstrong\u003eOnly use rock phosphate where a soil test shows phosphate is low (Index 0 or 1).\u003c\/strong\u003e It works slowly and does best in acid soil, below about pH 6. In chalky or limed soil it releases very little.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlanting fruit trees and bushes on low-phosphate soil\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIndex 0 (low): 60 g per m². Index 1: 30 g per m².\u003c\/li\u003e\n\u003cli\u003eMix it evenly through the soil you dig out and through the surrounding area (about 1 m² per tree or bush), then backfill. That's 30–60 g per tree, or 2–3 level tablespoons (a level tablespoon holds about 18 g).\u003c\/li\u003e\n\u003cli\u003eDon't pile it in the bottom of the hole.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eNew soft fruit and strawberry beds on low-phosphate soil:\u003c\/strong\u003e use the same rates, forked into the top 15–20 cm before planting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEstablished trees and bushes:\u003c\/strong\u003e none needed unless a soil test shows low phosphate. If it does, give one dressing in early spring, raked or lightly forked in under the branches. Phosphate barely moves through soil, so work it in rather than leaving it on the surface.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIndex 0: trees 25 g per m², soft fruit 35 g per m².\u003c\/li\u003e\n\u003cli\u003eIndex 1: trees 13 g per m², soft fruit 23 g per m².\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDon't combine it with mycorrhizal fungi at planting.\u003c\/strong\u003e Plenty of phosphate makes roots less willing to partner with the fungi.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWalnuts:\u003c\/strong\u003e don't add fertiliser to the planting hole. Phosphate deficiency is rare in walnuts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNot a regular feed for figs, lemons or blueberries.\u003c\/strong\u003e Figs need very little phosphate. Citrus want nitrogen, and extra phosphate can upset their uptake of copper and zinc. Blueberries grow in acid soil where rock phosphate dissolves well, but they rarely need extra phosphate. For these three, \u003cstrong\u003euse it only as a one-off pre-plant dressing where a soil test shows phosphate is low.\u003c\/strong\u003e Established fruit rarely needs it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-step application\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePick the method.\u003c\/strong\u003e Soil mix or planting hole before planting; top dressing or drench once plants are in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure by weight where you can.\u003c\/strong\u003e A digital scale beats spoons for drench rates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSlurry, apply to moist soil, water in.\u003c\/strong\u003e Wet the powder first for a drench; water dry soil before and after a top dressing so the mineral reaches the roots.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eMycorrhizal caution\u003c\/span\u003e\n\u003cp\u003eHigh phosphorus availability suppresses mycorrhizal colonisation. If using alongside mycorrhizal fungi at transplanting, incorporate rock phosphate at the lower end of the range for the first 6–8 weeks, then resume normal rates once the fungal network is established. The two products are compatible and complementary over the full season; this caution applies only to the immediate post-inoculation window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003e\u003ca href=\"\/products\/liquid-gypsum\"\u003eLiquid Gypsum\u003c\/a\u003e for additional calcium sulphate on intensive fruiting crops. \u003ca href=\"\/products\/fulvic-acid\"\u003eFulvic Acid Powder\u003c\/a\u003e chelates phosphate ions and improves their mobility in the root zone. \u003ca href=\"\/products\/mycorrhizal-fungi-powder-premium-endo-ecto-mycorrhizae-inoculant\"\u003eMycorrhizal Fungi Powder\u003c\/a\u003e: the fungal network is highly effective at accessing and delivering soil phosphorus, so inoculate at planting and allow it to establish before increasing P inputs. \u003ca href=\"\/products\/sulphate-of-potash\"\u003eSulphate of Potash\u003c\/a\u003e, because potassium and phosphorus work together during reproductive growth. For the whole feeding plan on a bed you rarely dig, see \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-top-dress\"\u003eHow to top dress like a pro\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage\u003c\/span\u003e\n\u003cp\u003eKeep sealed, cool and dry. The mineral does not degrade, but damp powder cakes and is awkward to measure. Keep out of reach of children and pets, and avoid breathing the dust.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 4 — FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-rp-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions about rock phosphate fertiliser\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-rp-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-rp-faq1\"\u003eWhat is rock phosphate and what does it do for plants?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eRock phosphate is a natural calcium phosphate mineral, quarried and ground into a powder. In the soil it releases phosphorus, which drives root growth, flowering and fruit fill, and calcium, which builds cell walls. This one is a soft rock phosphate micronised to a fine powder, analysing at 31% total P₂O₅ and 49% CaO, with up to 20% of the phosphorus in the formic-acid soluble form that counts for the coming season.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-rp-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-rp-faq2\"\u003eWhat is the difference between soft rock phosphate and ordinary rock phosphate?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThe raw mineral is the same: natural calcium phosphate. The difference is grind. Standard rock phosphate is relatively coarse (100–500 microns or larger) and dissolves very slowly, releasing phosphorus over years. This soft rock phosphate is micronised, which exposes far more surface to soil water, root exudates and microbial acids, so substantially more phosphorus becomes available in the first growing season. The fine particle size also makes a liquid drench practical, which coarser rock phosphate cannot do.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-rp-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-rp-faq3\"\u003eMy tomatoes have purple leaves. Will rock phosphate fix it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003ePurple or reddish-purple colour on the undersides of tomato leaves is the classic sign of phosphorus deficiency. It is common in early spring when compost is cold and phosphorus is temporarily immobile. For the fastest correction, mix 1–2 g per litre and apply as a root zone drench to warm, moist compost; uptake slows right down when the roots are cold, so warming the plant up matters as much as the drench. New growth should improve in colour over 7–14 days.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-rp-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-rp-faq4\"\u003eWill rock phosphate help with blossom end rot?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAt 49% CaO it is a good long-term calcium source for soil application. Blossom end rot, though, is more often caused by uneven watering interrupting calcium delivery to the fruit than by a shortage of calcium in the growing medium, so the first fix is consistent watering. For active blossom end rot, a water-soluble calcium such as \u003ca href=\"\/products\/liquid-gypsum\"\u003eLiquid Gypsum\u003c\/a\u003e works faster. Rock phosphate is best used as a soil builder to keep calcium levels up across the season, particularly incorporated before planting. Our blog \u003ca href=\"\/blogs\/the-dr-forest-blog\/blossom-end-rot-tomatoes\"\u003eBlossom end rot in tomatoes\u003c\/a\u003e goes through the causes properly.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-rp-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-rp-faq5\"\u003eWill adding phosphorus affect my mycorrhizal fungi?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAt high availability, yes: phosphorus suppresses mycorrhizal colonisation because the plant has less reason to invest in the partnership. At the rates on this page, with a slow-release mineral rather than a soluble phosphate, the risk of complete suppression is low. If inoculating at transplanting, use the lower end of the range for the first 6–8 weeks. The fungi are one of the main routes by which rock phosphate becomes plant-available, so an established network makes this product work better.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-rp-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-rp-faq6\"\u003eCan I use rock phosphate on acid-loving plants like blueberries?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eWith some caution. Calcium phosphate lacks the strong liming effect of carbonate calcium, so the pH impact on an already-acid soil is small at garden rates. Blueberries want pH 4.5–5.5, though, and heavy repeated applications of any calcium mineral could shift pH upward over time. For ericaceous plants, use the lower end of the range, infrequently. An occasional drench at 1 g\/L is safer than a large incorporation rate.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-rp-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-rp-faq7\"\u003eIs it safe for edible crops, children, pets and wildlife?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. It is a quarried mineral, mechanically ground, with no synthetic additives and no animal-derived ingredients, and it can be used on all edible crops with no withholding period. As with any fine powder, keep it away from children and pets and avoid breathing the dust.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-rp-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-rp-faq8\"\u003eDoes rock phosphate dissolve in water?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNot fully. It forms a suspension rather than a true solution: the micronised particles disperse finely but the mix stays opaque and settles if left standing. Pre-mix the powder in a little water to break up clumps, add to the full volume, and stir or shake before each pass. At 1–2 g per litre the suspension goes through most watering cans and garden sprayers.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-rp-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-rp-faq9\"\u003eIs rock phosphate a complete fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNo. It is a 0-31-0 phosphorus and calcium input with no nitrogen or potassium to speak of. Use it alongside a balanced feed, or pair it with \u003ca href=\"\/products\/sulphate-of-potash\"\u003eSulphate of Potash\u003c\/a\u003e on fruiting crops.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-rp-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-rp-faq-paa1\" class=\"drf-faq-q\"\u003eWhich plants benefit most from rock phosphate?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eAnything putting on new roots or setting flowers and fruit: young plants and transplants, fruiting crops such as tomatoes and peppers, and new or depleted beds where you're building fertility. It's also the one to reach for when tomatoes show purple undersides to their leaves, the classic sign of phosphorus shortage. Established borders on fertile soil need far less, and very high phosphorus works against mycorrhizal fungi, so test or go gently.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-rp-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-rp-faq-paa2\" class=\"drf-faq-q\"\u003eAre there any downsides to rock phosphate?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eThree worth knowing. It's slow: total P₂O₅ is 31%, but only up to 20% of that is in the formic-acid-soluble fraction that plants can reach this season. The rest comes out over years. It works best in neutral to acid soil, because root and microbial acids are what dissolve it. And it supplies only phosphorus and calcium, so you still need nitrogen and potassium from somewhere else. It also won't dissolve fully in water; it makes a suspension that settles.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-rp-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-rp-faq-paa3\" class=\"drf-faq-q\"\u003eHow long does rock phosphate last in the soil?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003ePart of it works this season and part of it lasts for years. Up to 20% of the phosphate is in the faster, formic-acid-soluble fraction. The rest is locked in the mineral and is released slowly as roots, microbes and weathering break it down. That's why beds and borders only need 50–150 g per m², repeated every 6–12 weeks in the growing season, and why each dose leaves a reserve behind for later seasons.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-rp-faq-paa4\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-rp-faq-paa4\" class=\"drf-faq-q\"\u003eShould I use bone meal or rock phosphate?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eBoth supply phosphorus and calcium. Rock phosphate is a single quarried mineral with no animal-derived ingredients, so it suits vegan growing. Bone meal is an animal by-product and also carries some nitrogen. This rock phosphate is micronised, so more of it becomes available in the first season than with a coarse grind, and it can be stirred into water as a drench. Bone meal can't.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-rp-faq-paa5\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-rp-faq-paa5\" class=\"drf-faq-q\"\u003eIs rock phosphate suitable for organic growing?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eIt's a single quarried mineral, ground with nothing added and no acid treatment, and it has no animal-derived ingredients. We make no certification claim for it. If you grow under a certification scheme, check it against your scheme's input rules before use.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-rp-faq-paa6\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-rp-faq-paa6\" class=\"drf-faq-q\"\u003eHow do I apply rock phosphate?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eFor beds and borders, rake 50–150 g per m² lightly into the surface every 6–12 weeks in the growing season, or apply it before rain. Use 50 g as maintenance and up to 150 g when building new or depleted ground or correcting a phosphorus shortage. In established containers, top-dress at 0.2–0.5 g per litre of soil every 6–8 weeks. In new potting mixes, stir it through before planting. As a drench, mix the powder with a little water first, then top up and keep it stirred, because it settles.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Dr Forest","offers":[{"title":"500g","offer_id":44828087353531,"sku":"DF-ROCKPHOS-500G","price":6.99,"currency_code":"GBP","in_stock":true},{"title":"1.5kg","offer_id":44826364412091,"sku":"DF-ROCKPHOS-1.5","price":14.0,"currency_code":"GBP","in_stock":true},{"title":"3kg","offer_id":44826364444859,"sku":"DF-ROCKPHOS-3","price":24.0,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":46265253691579,"sku":"DF-ROCKPHOS-9","price":56.49,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":46265255329979,"sku":"DF-ROCKPHOS-15","price":92.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/organic-micro-cal-phos-31-phosphorous-micronised-rock-phosphate-445.webp?v=1785512767"},{"product_id":"organic-alfalfa-meal-pellets-2-5-0-3-2","title":"Alfalfa Meal Pellets | Organic Plant Feed","description":"\u003c!-- Dr Forest — Alfalfa Meal Pellets Product Page (v2 — Design System v1.0) --\u003e\n\u003c!-- Prefix: am · 4-tab layout --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; font-weight: 600; font-size: 0.85em; letter-spacing: 0.2em; text-transform: uppercase; 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padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\n\n\u003c!-- ===== 4-TAB BODY (Overview \/ The Science \/ How to Use \/ FAQ) ===== --\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-am-tabset\" id=\"drf-am-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-am-tabset\" id=\"drf-am-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-am-tabset\" id=\"drf-am-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-am-tabset\" id=\"drf-am-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-am-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-am-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-am-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-am-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-am-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eAlfalfa pellets: a slow-release organic nitrogen feed with natural triacontanol\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003e100% Plant-Based\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSlow-Release Nitrogen\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eTriacontanol\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSeedling Safe\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eRecyclable Packaging\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eAlfalfa pellets are dried lucerne (\u003cem\u003eMedicago sativa\u003c\/em\u003e), milled and pressed into a pellet, used in the garden as a slow-release organic nitrogen fertiliser with an analysis of 2.5-0.3-2.\u003c\/strong\u003e The nitrogen is held in plant protein rather than as a soluble salt, so soil microbes release it over four to eight weeks and it cannot scorch roots or seedlings. Alfalfa is also the plant that triacontanol, a naturally occurring growth regulator, was first isolated from in 1977, which is why rose growers have used it for decades.\u003c\/p\u003e\n\u003cp\u003eDr Forest alfalfa meal pellets are a single-ingredient, plant-based feed for vegetable beds, roses, soft fruit, lawns and containers, with no animal by-products of any kind. Suitable for vegan and no-dig gardens.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e2.5%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNitrogen (N)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e2.5-0.3-2\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNPK analysis\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e4–8 wk\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eRelease period\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e100%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePlant-based\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat are alfalfa pellets used for in the garden?\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetable bed nitrogen feed\u003c\/strong\u003e — brassicas, leafy greens, courgettes and tomatoes; safe to apply at transplanting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlfalfa pellets for roses\u003c\/strong\u003e — the long-standing rose grower's amendment, applied in early spring and again after the first flush\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoft fruit\u003c\/strong\u003e — currants, gooseberries and raspberries before growth starts, with a light second dose after harvest\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrganic lawn feed\u003c\/strong\u003e — a slow, even green-up without the surge that follows a synthetic high-nitrogen lawn feed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeedling and potting compost\u003c\/strong\u003e — one of the few organic nitrogen sources gentle enough to mix in before sowing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompost accelerator\u003c\/strong\u003e — nitrogen for a heap that is heavy on cardboard, straw and woody material\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoil builder\u003c\/strong\u003e — each application leaves organic matter behind as the pellets break down\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDried alfalfa: pellets, meal or bale?\u003c\/h3\u003e\n\u003cp\u003eDried alfalfa is sold in three forms and they are all the same plant. A bale is the whole cut crop, dried, and is sold as horse and livestock forage. Alfalfa meal is that dried crop milled to a coarse powder. Alfalfa pellets are the meal pressed through a die under heat and pressure, which is the form we sell. For garden use the pellet wins on handling: loose meal blows about when dry and mats when wet, and a bale needs chopping before it will break down in a bed. Pellets pour, measure by the gram, and swell and fall apart within days of being watered in.\u003c\/p\u003e\n\u003ch3\u003eWhy alfalfa pellets rather than a soluble nitrogen feed?\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eAlfalfa meal pellets\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNitrogen bound in plant protein, released by soil biology over 4–8 weeks\u003c\/li\u003e\n\u003cli\u003eCannot scorch roots or seedlings at the stated rates\u003c\/li\u003e\n\u003cli\u003eCarries triacontanol, free amino acids and trace minerals from the whole plant\u003c\/li\u003e\n\u003cli\u003eLeaves organic matter behind in the soil\u003c\/li\u003e\n\u003cli\u003eSingle plant ingredient, nothing added\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eSoluble synthetic nitrogen feed\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNitrate or urea in solution, available the day it is applied\u003c\/li\u003e\n\u003cli\u003eLeaches out of the root zone with the next heavy rain\u003c\/li\u003e\n\u003cli\u003eNo triacontanol, no amino acids, no organic matter\u003c\/li\u003e\n\u003cli\u003eEasy to overdo, especially in pots\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003cp\u003eDr Forest alfalfa pellets are packed in small batches at our workshop in Stockport, Greater Manchester, in recyclable packaging. Plant-based, made with organic ingredients, and suitable for vegan gardens. If you want the longer version of what alfalfa does and does not do, read \u003ca href=\"\/blogs\/the-dr-forest-blog\/alfalfa-meal-organic-fertiliser\"\u003eWhat is alfalfa meal, and is it a good fertiliser?\u003c\/a\u003e \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 2 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-am-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eThe science of alfalfa meal: protein nitrogen, triacontanol and soil biology\u003c\/h2\u003e\n\u003ch3\u003eWhat alfalfa meal actually is\u003c\/h3\u003e\n\u003cp\u003eAlfalfa is a deep-rooted perennial legume grown across the world as forage. The whole shoot, leaf and stem, is cut, dried and milled. Because it is a legume, the crop fixes its own nitrogen from the air and stores it as protein in the leaf, which is where the 2.5% nitrogen in the meal comes from. In a 52-week incubation, Dion and colleagues (2020, \u003cem\u003eCanadian Journal of Soil Science\u003c\/em\u003e) measured alfalfa meal at 2.59% total nitrogen, which sits neatly against the 2.5% on our label.\u003c\/p\u003e\n\u003cp\u003eThere is no chemical processing. The pellet is the plant, dried and pressed. That matters because everything else the leaf contains comes along with the nitrogen: amino acids, potassium, trace minerals and the waxy cuticle that carries triacontanol. For a comparison with other organic nitrogen sources see \u003ca href=\"\/blogs\/the-dr-forest-blog\/high-nitrogen-feed\"\u003eHigh nitrogen feed: what it does, and when to use it\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eAnalysis\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eNutrient\u003c\/th\u003e\n\u003cth\u003eDeclared\u003c\/th\u003e\n\u003cth\u003eForm in the pellet\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNitrogen (N)\u003c\/td\u003e\n\u003ctd\u003e2.5%\u003c\/td\u003e\n\u003ctd\u003ePlant protein; released by microbial breakdown\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhosphorus\u003c\/td\u003e\n\u003ctd\u003e0.3%\u003c\/td\u003e\n\u003ctd\u003eOrganic phosphorus in plant tissue\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotassium\u003c\/td\u003e\n\u003ctd\u003e2%\u003c\/td\u003e\n\u003ctd\u003ePotassium held in plant tissue; released as the pellet breaks down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTriacontanol\u003c\/td\u003e\n\u003ctd\u003eTrace\u003c\/td\u003e\n\u003ctd\u003eC₃₀ fatty alcohol in the leaf cuticle wax\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe nitrogen figure is modest next to a synthetic feed, and that is the point. All of it is locked in protein; none of it sits in the bag as soluble nitrate. Dion et al. found alfalfa meal mineralised 34–53% of its nitrogen over the year depending on the growing medium, with a short period of net immobilisation in the first week as microbes took up nitrogen to build their own biomass, and release levelling off after roughly 60 days. That is the mechanism behind the four-to-eight-week feed window and the reason you cannot scorch a seedling with it.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eThe plant is only fed as fast as the soil biology is working, which is also exactly when the plant is ready to use it.\u003c\/div\u003e\n\u003ch3\u003eMechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eBiology-gated nitrogen release\u003c\/h4\u003e\n\u003cp\u003eAlfalfa protein is broken to peptides, then amino acids, then ammonium and nitrate by soil bacteria and fungi. Dion et al. (2020) recorded a burst of net immobilisation in week one, then steady mineralisation to a plateau at around 60 days, and alfalfa meal supported the highest bacterial diversity of the five fertilisers tested in mineral soil. Warm, moist, aerated soil speeds this up; cold or waterlogged soil slows it to a crawl.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eTriacontanol, the growth regulator first found in alfalfa\u003c\/h4\u003e\n\u003cp\u003eRies, Wert, Sweeley and Leavitt isolated triacontanol from alfalfa in 1977 (\u003cem\u003eScience\u003c\/em\u003e, 195, 1339–1341). It is a 30-carbon primary alcohol in the leaf's epicuticular wax. Naeem, Khan and Moinuddin's 2012 review (\u003cem\u003eJournal of Plant Interactions\u003c\/em\u003e, 7(2), 129–142) reports activity at nanomolar concentrations, a 30% rise in Rubisco over control in treated plants, and yield gains of 12–31% in wheat, cotton and rice trials with purified triacontanol. How much of that carries across from a soil-applied pellet is not something the literature pins down.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eTomato trials with triacontanol\u003c\/h4\u003e\n\u003cp\u003eKhan and colleagues (2009, \u003cem\u003eActa Horticulturae\u003c\/em\u003e, 823, 199–208) sprayed tomatoes with 1 µM triacontanol alongside potassium and recorded higher leaf chlorophyll, carotenoids and nutrient uptake against untreated controls, with the best potassium-plus-triacontanol combination yielding 57.6% more fruit. Manai et al. (2024, \u003cem\u003eScientific Reports\u003c\/em\u003e, 14, 12096) found weekly foliar triacontanol raised total tomato yield by 28% and held chlorophyll steady under salt stress where control plants lost 28% of theirs. Both used purified triacontanol as a foliar spray, so treat them as evidence for the molecule rather than a yield promise for the pellet.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eAmino acids taken up direct\u003c\/h4\u003e\n\u003cp\u003eAs alfalfa protein degrades it releases free amino acids into the soil solution. Näsholm, Kielland and Ganeteg's 2009 Tansley review (\u003cem\u003eNew Phytologist\u003c\/em\u003e, 182, 31–48) sets out the evidence that plant roots carry amino acid transporters and take up organic nitrogen in the field, while noting that how much of a plant's total nitrogen arrives this way is still debated. A protein-based feed at least gives the roots that option.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eOrganic inputs and soil carbon\u003c\/h4\u003e\n\u003cp\u003eAcross 537 field experiments, Shi et al. (2024, \u003cem\u003eNature Communications\u003c\/em\u003e, 15, 3411) found organic fertilisation raised above-ground biomass by 56% against 42% for inorganic, lifted soil organic carbon in grasslands by 19% where inorganic managed 2%, and held plant diversity where inorganic fertilisation cut species richness by 18%. Alfalfa pellets are a small, whole-plant organic input; every application adds carbon as well as nitrogen.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003eRelease timeline in practice\u003c\/h4\u003e\n\u003cp\u003eDays 1–5: pellets take up water, swell and fall apart. Week 1: microbes colonise and briefly tie up nitrogen. Weeks 2–4: peak mineralisation, ammonium converted to nitrate, main feeding window. Weeks 4–8: residual release at a lower rate while the remaining fibre becomes soil organic matter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eRies, S.K., Wert, V., Sweeley, C.C. \u0026amp; Leavitt, R.A. (1977). Triacontanol: a new naturally occurring plant growth regulator. \u003cem\u003eScience\u003c\/em\u003e, 195(4284), 1339–1341.\u003c\/li\u003e\n\u003cli\u003eNaeem, M., Khan, M.M.A. \u0026amp; Moinuddin (2012). Triacontanol: a potent plant growth regulator in agriculture. \u003cem\u003eJournal of Plant Interactions\u003c\/em\u003e, 7(2), 129–142.\u003c\/li\u003e\n\u003cli\u003eKhan, M.M.A., Bhardwaj, G., Naeem, M., Moinuddin, Mohammad, F., Singh, M., Nasir, S. \u0026amp; Idrees, M. (2009). Response of tomato (\u003cem\u003eSolanum lycopersicum\u003c\/em\u003e L.) to application of potassium and triacontanol. \u003cem\u003eActa Horticulturae\u003c\/em\u003e, 823, 199–208.\u003c\/li\u003e\n\u003cli\u003eManai, M., Fiorillo, A., Matuozzo, M., Li, M., D'Ambrosio, C., Franco, L., Scaloni, A., Fogliano, V., Camoni, L. \u0026amp; Marra, M. (2024). Phenotypical and biochemical characterization of tomato plants treated with triacontanol. \u003cem\u003eScientific Reports\u003c\/em\u003e, 14, 12096.\u003c\/li\u003e\n\u003cli\u003eDion, P.-P., Jeanne, T., Thériault, M., Hogue, R., Pepin, S. \u0026amp; Dorais, M. (2020). Nitrogen release from five organic fertilizers commonly used in greenhouse organic horticulture with contrasting effects on bacterial communities. \u003cem\u003eCanadian Journal of Soil Science\u003c\/em\u003e, 100(2), 120–135.\u003c\/li\u003e\n\u003cli\u003eNäsholm, T., Kielland, K. \u0026amp; Ganeteg, U. (2009). Uptake of organic nitrogen by plants. \u003cem\u003eNew Phytologist\u003c\/em\u003e, 182(1), 31–48.\u003c\/li\u003e\n\u003cli\u003eShi, T.-S., Collins, S.L., Yu, K., Peñuelas, J., Sardans, J., Li, H. \u0026amp; Ye, J.-S. (2024). A global meta-analysis on the effects of organic and inorganic fertilization on grasslands and croplands. \u003cem\u003eNature Communications\u003c\/em\u003e, 15, 3411.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"margin-top: 0.6em;\"\u003eFigures describe the published literature on alfalfa meal and triacontanol and are not product-specific yield guarantees.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-am-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use alfalfa pellets: application rates and timing\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eGeneral principle\u003c\/span\u003e\n\u003cp\u003eAlfalfa meal pellets work best when lightly incorporated into the top 5–10 cm of soil or compost, then watered in. Surface application works but is slower. Avoid deep burial: microbial breakdown is an aerobic process and needs oxygen to function efficiently.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication rates by use\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eVegetable beds\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100–150g per m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Pre-plant or side dressing every 4–6 weeks\u003c\/div\u003e\n\u003cp\u003eWork lightly into the top layer. Particularly effective for brassicas and leafy greens during the growth phase. Safe to apply at transplanting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTomatoes and cucumbers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 50–100g per plant  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e At planting; repeat at first flower set\u003c\/div\u003e\n\u003cp\u003eApply around the drip line, not at the stem. The second application at flower set supports fruit development with triacontanol and amino acids.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRoses\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100–150g per bush  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Early spring; repeat after first flush\u003c\/div\u003e\n\u003cp\u003eThe triacontanol effect on rose flowering is well-documented by growers. Apply when soil temperature exceeds 10°C for best results. Many growers also brew alfalfa tea for a faster-acting version. There is a longer piece on this in \u003ca href=\"\/blogs\/the-dr-forest-blog\/alfalfa-for-roses\"\u003eAlfalfa for roses: what fifty years of rose growing actually proves\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSoft fruit\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 75–100g per plant  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Early spring before growth begins\u003c\/div\u003e\n\u003cp\u003eWater in well. A second light application post-harvest supports next year's bud development for currants, gooseberries and raspberries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eContainers and pots\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 5–10g per litre of compost  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Mix at potting; top-dress monthly\u003c\/div\u003e\n\u003cp\u003eLighter rates in pots than open ground: the confined volume means nutrients concentrate more quickly. Safe for all container crops including seedlings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawns\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 50–75g per m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Early spring; repeat in autumn if needed\u003c\/div\u003e\n\u003cp\u003eScatter evenly and water in well. Encourages slow, steady greening without the growth surge of synthetic lawn feeds. Feeds soil biology as well as the grass. See \u003ca href=\"\/blogs\/the-dr-forest-blog\/alfalfa-for-lawns\"\u003eAlfalfa for lawns\u003c\/a\u003e for the honest case, including where it falls short.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSeedlings and potting compost\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 5g per litre of compost  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Mix before sowing or potting on\u003c\/div\u003e\n\u003cp\u003eSafe to use near young roots. One of the only organic nitrogen sources suitable at this stage: the slow-release profile cannot scorch seedlings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eCompost heap\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e A light sprinkling between layers  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e When adding material\u003c\/div\u003e\n\u003cp\u003eThe high nitrogen content accelerates breakdown of carbon-heavy material. No precise rate needed: scatter a handful between brown layers.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eAlfalfa tea: liquid application\u003c\/h3\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eFor faster results\u003c\/span\u003e\n\u003cp\u003eSteep 100g of pellets in 10 litres of water for 3–5 days, stirring daily. Strain the liquid and apply directly to the root zone or as a dilute foliar spray. Makes triacontanol and amino acids available more quickly than dry application. Use within a day of straining. Be warned that alfalfa tea develops a strong smell as it ferments, so brew away from doors and windows.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eOn fruit trees and soft fruit\u003c\/h3\u003e\n\u003cp\u003eAlfalfa pellets are a gentle, slow nitrogen feed that also feeds soil life. They're mild (2.5-0.3-2), so cropping fruit still needs a potash feed alongside them, such as Sulphate of Potash (on apples, only if a soil test shows low potash).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrants, gooseberries, raspberries and blackberries:\u003c\/strong\u003e 75–100 g per bush, or per metre of row, in March–April once the soil has warmed. Scatter the pellets over the root area, keep them off the stems, and water in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA second light dose of 50 g per bush, straight after picking,\u003c\/strong\u003e for blackcurrants and gooseberries only. Not for summer raspberries: they're picked in July–August, and feeding them after the end of July gives soft late canes. Autumn raspberries can have their second dose in June instead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrawberries:\u003c\/strong\u003e alfalfa alone is too low in potash for them. Use Strawberry Feed 3-2-7.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruit and nut trees in the ground:\u003c\/strong\u003e 100–150 g per m² under the branches, out to the branch tips, in March to early April. Keep it at least 30 cm from the trunk (45 cm for young almonds). Give a second, smaller feed in late May only if growth is weak. Nothing after June, and never feed at or after leaf fall. Don't put pellets in the planting hole of a newly planted tree; start the following spring. Walnuts on good soil need nothing in their first year.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruit in pots:\u003c\/strong\u003e mix 5 g per litre of compost at potting. Top-dress 2–5 g per litre in spring and again in late May. Figs: stop by midsummer. Lemons are hungrier: top-dress them every 4–6 weeks from late March to September.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlueberries:\u003c\/strong\u003e use an ericaceous feed instead. Alfalfa isn't one.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBe patient.\u003c\/strong\u003e Soil life has to break the pellets down, so they work slowly in cold soil. In warm, moist soil, expect roughly half the nitrogen to be released over the first two to three months.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStep-by-step application\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the soil is warm enough.\u003c\/strong\u003e Above 7–8°C, which in the UK usually means March onwards. The thresholds are set out under \"When not to apply\" below.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure the rate for the job.\u003c\/strong\u003e Take the figure from the cards above. Kitchen scales are more reliable than a handful for pots and seedling compost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScatter and work in lightly.\u003c\/strong\u003e Incorporate into the top 5–10 cm. Around established plants, keep it at the drip line rather than against the stem.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater in well.\u003c\/strong\u003e The pellets need moisture to swell and break apart, and the microbes need it to start work.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRepeat on the schedule for that crop.\u003c\/strong\u003e Every 4–6 weeks in vegetable beds, monthly as a top-dress in pots, after the first flush on roses.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhen not to apply\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvoid in waterlogged conditions.\u003c\/strong\u003e Anaerobic breakdown produces compounds that can be phytotoxic at close range. Wait until drainage improves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDon't apply to winter-dormant plants.\u003c\/strong\u003e There is little microbial activity to mineralise the nitrogen, and nutrients may be leached before growth begins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWait until soil temperature is above 7–8°C.\u003c\/strong\u003e Below this threshold, breakdown is too slow to be effective. In early spring UK conditions, this typically means March onwards.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003eAlfalfa meal is nitrogen-led (2.5-0.3-2) and is best used alongside a potassium-rich amendment during fruiting and flowering phases. Pair with \u003ca href=\"\/products\/polyhalite\"\u003eYorkshire Polyhalite\u003c\/a\u003e or \u003ca href=\"\/products\/sulphate-of-potash\"\u003eSulphate of Potash\u003c\/a\u003e for a balanced N-K profile through the season. For a complete programme, Dr Forest \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eBloom Fertiliser 2-8-4\u003c\/a\u003e or \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose Fertiliser 4-4-4\u003c\/a\u003e can be used in rotation. If you top-dress rather than dig, \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-top-dress\"\u003eHow to top dress like a pro\u003c\/a\u003e covers the method.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage\u003c\/span\u003e\n\u003cp\u003eKeep the bag sealed, cool and dry. Pellets that get damp will swell and start to break down in the bag, and the smell will tell you. Store out of reach of dogs, who find the smell interesting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 4 — FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-am-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions about alfalfa pellets\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq1\"\u003eWhat is alfalfa meal and what does it do?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAlfalfa meal is the dried, milled shoot of the lucerne plant. In the garden it works as a slow-release organic nitrogen feed (2.5-0.3-2) that soil microbes break down over four to eight weeks. It also carries the leaf's amino acids, potassium and a trace of triacontanol, a natural growth regulator. Our version is pressed into pellets for easier handling.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq2\"\u003eAre alfalfa pellets good for roses?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eRose growers have used alfalfa for decades, and it is the triacontanol in the leaf that gets the credit. Apply 100–150g per bush in early spring when soil temperature exceeds 10°C, and repeat after the first flush. The formal trials on triacontanol used purified sprays rather than pellets, so the rose evidence is grower experience more than controlled study.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq3\"\u003eCan alfalfa pellets burn my plants?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAt the stated rates, no. The nitrogen is bound in plant protein and only becomes available as microbes break it down, so a plant cannot take up more than the soil biology releases. That is why it is safe at transplanting and in seedling compost at 5g per litre. Very heavy over-application in a small pot is the one way to cause trouble, and even then the issue is a rotting mass of pellets rather than a nitrogen burn.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq4\"\u003eWhat is triacontanol?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eTriacontanol is a 30-carbon fatty alcohol found in the waxy surface of plant leaves. It was first isolated from alfalfa by Ries and colleagues in 1977 and has since been shown, at very low concentrations, to raise photosynthetic activity and yield in crops including tomato, wheat, rice and cotton. Alfalfa is the everyday garden source of it. How much a soil-applied pellet delivers to the plant is not well quantified.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq5\"\u003eHow long do alfalfa pellets take to work?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIn warm, moist soil above 12°C with active biology, meaningful nitrogen release begins within 1–2 weeks, peaks around weeks 2–4 and continues at a lower rate for 4–8 weeks in total. In cool early-spring soil it is slower, which suits the plant, since the feed comes on as growing conditions improve. For faster results, brew alfalfa tea (3–5 days steeping) and apply as a liquid drench.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq6\"\u003eHow much alfalfa meal should I use per plant?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eRoses and larger shrubs: 100–150g per bush. Tomatoes and cucumbers: 50–100g per plant. Soft fruit: 75–100g per plant. Vegetable beds: 100–150g per m². Containers: 5–10g per litre of compost. Lawns: 50–75g per m². The How to Use tab has the timing for each.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq7\"\u003eWhat is the difference between alfalfa pellets and dried alfalfa?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNone in the plant. Dried alfalfa is the cut crop after drying; sold whole it is a bale, milled it is alfalfa meal, and milled then pressed it is a pellet. Pellets are the easiest to measure and the least likely to blow away or clump. Forage-grade dried alfalfa for horses is the same crop, sometimes with molasses or other additions, so check the label if you are buying from a feed merchant.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq8\"\u003eCan I use alfalfa pellets on my lawn?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Apply 50–75g per m², scatter evenly and water in well, in early spring and again in autumn if needed. Expect a slow, even green-up rather than a surge. The pellets need to be watered in properly or they will sit on the surface and look untidy for a week or two.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq9\"\u003eAre alfalfa pellets safe for pets, children and bees?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAlfalfa is the same plant fed to horses and livestock and the pellets contain nothing else. Once watered in, the garden is fine for children, pets and pollinators. Dogs are drawn to the smell, so store the bag out of reach and keep them off a freshly dressed bed until it has been watered in.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-am-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-am-faq10\"\u003eIs this organic, and is it vegan?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is a single plant ingredient with nothing added, so it is plant-based and vegan. We describe it as made with organic ingredients; it is not sold under an organic certification scheme. There are no animal by-products in this product.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-am-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-am-faq-paa1\" class=\"drf-faq-q\"\u003eWhich plants like alfalfa pellets?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eRoses most famously: rose growers have used alfalfa for decades, at 100–150 g per bush in early spring and again after the first flush. It also suits tomatoes and cucumbers, soft fruit, leafy vegetables and lawns, and it's gentle enough to mix into seed and potting compost. It's a mild nitrogen feed (2.5-0.3-2), so heavy fruiting crops will still want a potash feed once they set fruit. More in \u003ca href=\"\/blogs\/the-dr-forest-blog\/alfalfa-for-roses\"\u003ealfalfa for roses\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-am-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-am-faq-paa2\" class=\"drf-faq-q\"\u003eHow do I use alfalfa pellets in the garden?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eScatter them and work them lightly into the top layer of soil, or set them around the drip line of a plant rather than against the stem, then water in well. On vegetable beds use 100–150 g per m² before planting or as a side dressing every 4–6 weeks. For tomatoes and cucumbers, use 50–100 g per plant at planting and again at first flower set. For soft fruit, use 75–100 g per plant in early spring. In potting compost, mix in 5 g per litre before sowing or potting on.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-am-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-am-faq-paa3\" class=\"drf-faq-q\"\u003eCan I add alfalfa pellets to my compost heap?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. At 2.5% nitrogen, alfalfa is a nitrogen-rich \"green\" that helps a heap full of woody, carbon-rich material heat up and break down. Scatter a light sprinkling between layers as you add material; there's no precise rate. For feeding plants directly, though, it does more good in the soil, where the slow release over four to eight weeks feeds both the plant and the soil life.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-am-faq-paa4\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-am-faq-paa4\" class=\"drf-faq-q\"\u003eHow long do alfalfa pellets keep in the bag?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eKeep the bag sealed, cool and dry, and the pellets stay in good condition. Damp is the problem: pellets that get wet swell and start to break down in the bag, and the smell will tell you. Store the bag out of reach of dogs, who find the smell interesting. Once they're in the soil, one dressing feeds for four to eight weeks.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-am-faq-paa5\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-am-faq-paa5\" class=\"drf-faq-q\"\u003eDo I need to soak alfalfa pellets first?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNo. Scatter them dry and water them in well. The water softens the pellets and starts the microbial breakdown that releases the nitrogen. On lawns, water thoroughly so the pellets break down rather than sitting on the surface, where dogs may be drawn to them.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ===== END 4-TAB BODY ===== --\u003e\n","brand":"Dr Forest","offers":[{"title":"1.5kg","offer_id":44826390593723,"sku":"DF-ALFALFA-1.5","price":12.0,"currency_code":"GBP","in_stock":true},{"title":"4.5kg","offer_id":44826390626491,"sku":"DF-ALFALFA-4.5","price":25.49,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":44826390659259,"sku":"DF-ALFALFA-9","price":46.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/organic-alfalfa-meal-pellets-2-5-0-3-2-fertiliser-pile-dark-green-588.webp?v=1786553588"},{"product_id":"garden-lime","title":"Garden Lime | Micronised Calcium Carbonate 96%","description":"\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; font-weight: 600; font-size: 0.85em; letter-spacing: 0.2em; text-transform: uppercase; 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background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 700; }\n  #drf-cc-tab1:checked ~ .drf-panels #drf-cc-panel1,\n  #drf-cc-tab2:checked ~ .drf-panels #drf-cc-panel2,\n  #drf-cc-tab3:checked ~ .drf-panels #drf-cc-panel3,\n  #drf-cc-tab4:checked ~ .drf-panels #drf-cc-panel4,\n  #drf-cc-tab5:checked ~ .drf-panels #drf-cc-panel5 { display: block; }\n\n  \/* ── CALLOUTS (square; light \/ gold \/ dark) ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); color: var(--drf-cream); border-left-color: var(--drf-gold); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout-dark a { color: var(--drf-cream); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n\n  \/* ── PULL QUOTE ── *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: 1.4em; color: var(--drf-grn); text-align: center; padding: 1.4em 1em; margin: 1.8em auto; max-width: 80%; line-height: 1.5; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); }\n\n  \/* ── INGREDIENT CARDS (5-tab) ── *\/\n  .drf-ing { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-white); }\n  .drf-ing-head { display: flex; align-items: baseline; justify-content: space-between; }\n  .drf-ing-num { font-family: 'Cormorant Garamond', serif; font-size: 1.6em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-ing-pct { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--drf-gold); }\n  .drf-ing h4 { margin: 0.2em 0 0.3em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-ing p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── MECHANISM CARDS ── *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); font-weight: 600; }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate p:last-child { margin-bottom: 0; }\n  .drf-rate ul { font-size: 0.92em; color: var(--drf-muted); margin: 0.4em 0 0; }\n  .drf-rate ul li { margin-bottom: 0.25em; }\n\n  \/* ── STEPS (square block numbers) ── *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.9em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST (1px hairline borders, alternating gold \/ green) ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* ── COMPARISON BOXES (stack vertically) ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\n\n\u003c!-- Dr Forest — Garden Calcium Carbonate Powder (v2 — Design System v1.0) — prefix cc --\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-cc-tabset\" id=\"drf-cc-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-cc-tabset\" id=\"drf-cc-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-cc-tabset\" id=\"drf-cc-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-cc-tabset\" id=\"drf-cc-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-cc-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-cc-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-cc-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-cc-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-cc-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eGarden calcium carbonate powder: 96% pure micronised lime for plants, lawns and soil\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003e96.2% CaCO₃\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e54.1% CaO\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eMicronised to 63 Micron\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eRaises Soil pH\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSingle Mineral \u0026amp; Vegan\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eCalcium carbonate powder is garden lime ground fine enough to work in weeks rather than a season.\u003c\/strong\u003e This is 96.2% pure calcium carbonate from quarried natural limestone, crushed and micronised so that 95% passes a 63 micron sieve. Nothing is added and nothing is chemically treated. The fineness does the work: calcium carbonate only dissolves at the particle surface, and a 63 micron grain has far more surface per gram than a 2 mm chip of agricultural lime. Dr Forest packs it in small batches in Stockport, Greater Manchester, in 500 g, 1.5 kg and 3 kg sizes.\u003c\/p\u003e\n\u003cp\u003eUse it to raise the pH of acidic soil, to feed calcium to hungry crops like tomatoes, brassicas and apples, and as a fine lime for lawns and potting mixes. Being a mined mineral with nothing added, it is vegan.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e96.2%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCalcium carbonate\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e54.1%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCaO calcium\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e63µ\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eMicronised\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e\u0026gt;91%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCarbonic solubility\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat is garden calcium carbonate used for?\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaising soil pH\u003c\/strong\u003e — calcium carbonate neutralises soil acidity as it dissolves. Micronised to 63 microns it starts reacting within days and shifts pH in weeks, where coarse agricultural lime can take most of a season\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA concentrated calcium source\u003c\/strong\u003e — 54.1% CaO is about 39% elemental calcium, against 23% for gypsum, so it suits soils where a test shows low calcium and you want to add nothing else with it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium for lawns\u003c\/strong\u003e — a fine lime that settles into the turf with rain or watering, for lawns on acidic soil where grass is thin and moss is winning\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLime for potting mixes\u003c\/strong\u003e — 1 to 3 g per litre of compost buffers pH and leaves a slow reserve of calcium through the season\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFoliar spray or root drench\u003c\/strong\u003e — the powder suspends in water at 0.5 to 1 g per litre for a calcium drench around tomatoes, peppers and brassicas during fruiting. The evidence for foliar calcium is mixed; see the Science tab before relying on it\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOrchards, fruit trees and established shrubs\u003c\/strong\u003e — for the crops with the highest calcium demand, applied under the canopy in late winter or after harvest\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy micronised limestone rather than agricultural lime?\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eMicronised calcium carbonate powder, 63µ\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e96.2% CaCO₃, the rest mostly silica and a trace of iron and magnesium\u003c\/li\u003e\n\u003cli\u003e95% passes a 63 micron sieve, so almost all of it is the fine fraction that actually reacts\u003c\/li\u003e\n\u003cli\u003eCarbonic solubility above 91%: dissolves in the weak acid that soil water already carries\u003c\/li\u003e\n\u003cli\u003eSuspends in water for a drench or foliar spray, and mixes evenly into compost at gram-per-litre rates\u003c\/li\u003e\n\u003cli\u003eQuarried and ground, no chemical processing, no fillers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eStandard agricultural lime, 2 to 4 mm\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCoarse particles that can take 6 to 12 months to react fully, and the largest chips much longer\u003c\/li\u003e\n\u003cli\u003ePurity varies; often 70 to 85% CaCO₃ with clay and silica making up the rest\u003c\/li\u003e\n\u003cli\u003eWill not suspend in water, so no liquid application\u003c\/li\u003e\n\u003cli\u003eToo lumpy to dose accurately into a potting mix\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003cp\u003eNatural limestone, quarried and micronised, then weighed and packed by hand in small batches at our workshop in Stockport, Greater Manchester. Vegan, with nothing added, and safe around children, pets, bees and wildlife at the rates on the How to Use tab. Not sure whether your soil needs lime or the opposite? Start with \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-increase-or-decrease-your-soil-ph\"\u003ehow to make soil more acidic, or raise the pH\u003c\/a\u003e. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 2 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-cc-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eThe science of calcium carbonate: particle size decides how fast lime works\u003c\/h2\u003e\n\u003ch3\u003eWhat this product actually is\u003c\/h3\u003e\n\u003cp\u003eCalcium carbonate (CaCO₃) is the mineral that makes up limestone and chalk, and it is the standard liming material in UK agriculture. Ours is quarried limestone that has been crushed and milled so that 95% passes a 63 micron sieve. It is not quicklime (calcium oxide), which is made by burning limestone, or hydrated lime, which is quicklime slaked with water; both are far more caustic. It is the same mineral as a bag of garden lime, with two differences: purity and fineness.\u003c\/p\u003e\n\u003cp\u003ePurity is 96.2% CaCO₃, with calcium at 54.1% CaO on the standard oxide basis and a neutralising value of 54. Fineness is where the speed comes from. Calcium carbonate is barely soluble in plain water. It dissolves in acid, and in soil that acid is mostly carbonic acid from dissolved carbon dioxide, plus organic acids from roots and microbes. The reaction happens at the particle surface, so the finer the grind, the more surface there is and the faster the lime reacts. Goulding (2016, \u003cem\u003eSoil Use and Management\u003c\/em\u003e) puts the UK target at pH 6.5 for cultivated ground and 6.0 for grassland, and notes that far less lime is applied in the UK than the soils need.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eFull mineral analysis\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eComponent\u003c\/th\u003e\n\u003cth\u003eAnalysis\u003c\/th\u003e\n\u003cth\u003eRole\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium carbonate (CaCO₃)\u003c\/td\u003e\n\u003ctd\u003e96.20%\u003c\/td\u003e\n\u003ctd\u003eLiming agent and calcium source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium (as CaO)\u003c\/td\u003e\n\u003ctd\u003e54.10%\u003c\/td\u003e\n\u003ctd\u003ePlant-available calcium once dissolved\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSilica (SiO₂)\u003c\/td\u003e\n\u003ctd\u003e1.20%\u003c\/td\u003e\n\u003ctd\u003eInert\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron (Fe₂O₃)\u003c\/td\u003e\n\u003ctd\u003e0.71%\u003c\/td\u003e\n\u003ctd\u003eTrace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium (MgO)\u003c\/td\u003e\n\u003ctd\u003e0.48%\u003c\/td\u003e\n\u003ctd\u003eTrace; this is not a dolomitic lime\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotassium (K₂O)\u003c\/td\u003e\n\u003ctd\u003e0.05%\u003c\/td\u003e\n\u003ctd\u003eTrace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManganese (MnO)\u003c\/td\u003e\n\u003ctd\u003e0.01%\u003c\/td\u003e\n\u003ctd\u003eTrace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSodium (Na₂O)\u003c\/td\u003e\n\u003ctd\u003e0.01%\u003c\/td\u003e\n\u003ctd\u003eTrace\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eNeutralising value 54. Carbonic solubility above 91%. 95% passes a 63 micron sieve. Note the magnesium figure: at under half a percent this is a calcitic lime, so if your soil is short of magnesium as well, pair it with \u003ca href=\"\/products\/kieserite-magnesium-sulphate-fertiliser\"\u003ekieserite\u003c\/a\u003e or use \u003ca href=\"\/products\/polyhalite\"\u003epolyhalite\u003c\/a\u003e rather than expecting the lime to do both jobs.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eThe finest material is best for raising soil pH. The mineral is the same; the grind is what you are paying for.\u003c\/div\u003e\n\u003ch3\u003eMechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eThe dissolution reaction\u003c\/h4\u003e\n\u003cp\u003eCaCO₃ + 2H⁺ → Ca²⁺ + H₂O + CO₂. Each unit of calcium carbonate that dissolves takes two acid ions out of the soil solution and puts one calcium ion in. That is the whole mechanism: pH rises because acidity is consumed, and calcium is released as a by-product. The reaction slows as the soil approaches neutral because there is less acid left to drive it, which is why calcium carbonate is a gentler liming material than quicklime or hydrated lime.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eFineness sets the speed\u003c\/h4\u003e\n\u003cp\u003eJones and Mallarino (2016) incubated soil with calcitic limestone sieved into size fractions. Every fraction finer than 20 mesh (850 microns) reached pH 6.5 within five weeks. The two coarsest fractions, 4 to 20 mesh, never lifted the soil above pH 6.3 in 30 weeks. Relative to pure calcium carbonate, the fraction passing 100 mesh (150 microns) was 97% effective; the 8 to 20 mesh fraction was 39%. Holland et al. (2018, \u003cem\u003eScience of the Total Environment\u003c\/em\u003e) reach the same conclusion for UK soils. At 63 microns this product sits well inside the finest band tested.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003epH and what the plant can reach\u003c\/h4\u003e\n\u003cp\u003eHolland et al. (2018) put plant-available phosphorus at its best between pH 5.5 and 6.5, with liming also releasing phosphorus from soil organic matter. Below about pH 4.2 aluminium reaches toxic levels. More than 40% of UK arable soils and 56% of grassland soils sit below their target pH, so if your beds have never been limed there is a fair chance they need it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eBacteria follow pH\u003c\/h4\u003e\n\u003cp\u003eRousk et al. (2010, \u003cem\u003eThe ISME Journal\u003c\/em\u003e) sampled a long-term liming trial running from pH 4.0 to 8.3 with everything else held equal. Bacterial diversity nearly doubled between pH 4 and 8 and the relative abundance of bacteria rose with it; fungal diversity was only weakly related to pH and the relative abundance of fungi did not change. Holland et al. (2018) note that liming raises the bacterial-to-fungal ratio and that earthworms, especially the deep-burrowing anecic species, tend to increase after lime.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eCalcium in the plant, and the honest limits of a foliar spray\u003c\/h4\u003e\n\u003cp\u003eWhite and Broadley (2003, \u003cem\u003eAnnals of Botany\u003c\/em\u003e) set out calcium's structural jobs in cell walls and membranes and its role balancing charge in the vacuole; the familiar disorders (blossom end rot, tipburn, bitter pit) are all local calcium shortfalls in fast-growing tissue. Calcium moves in the xylem with the transpiration stream and barely at all in the phloem, so leaves take most of it and fruit get what is left (Kabir and Díaz-Pérez, 2025, \u003cem\u003eHorticulturae\u003c\/em\u003e). That same review finds foliar calcium sprays reduce blossom end rot in some trials and not in others, and concludes that foliar uptake and transport are still not settled. Our view: a soil application that keeps the root zone supplied, with steady watering, is the reliable route. Treat a drench or spray as a top-up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eHolland, J.E., Bennett, A.E., Newton, A.C., White, P.J., McKenzie, B.M., George, T.S., Pakeman, R.J., Bailey, J.S., Fornara, D.A. and Hayes, R.C. (2018). Liming impacts on soils, crops and biodiversity in the UK: A review. \u003cem\u003eScience of the Total Environment\u003c\/em\u003e, 610–611, 316–332.\u003c\/li\u003e\n\u003cli\u003eGoulding, K.W.T. (2016). Soil acidification and the importance of liming agricultural soils with particular reference to the United Kingdom. \u003cem\u003eSoil Use and Management\u003c\/em\u003e, 32(3), 390–399.\u003c\/li\u003e\n\u003cli\u003eJones, J.D. and Mallarino, A.P. (2016). Influence of source and particle size on agricultural limestone efficiency at increasing soil pH. \u003cem\u003eProceedings of the North Central Extension-Industry Soil Fertility Conference\u003c\/em\u003e, 32, 91–96.\u003c\/li\u003e\n\u003cli\u003eRousk, J., Bååth, E., Brookes, P.C., Lauber, C.L., Lozupone, C., Caporaso, J.G., Knight, R. and Fierer, N. (2010). Soil bacterial and fungal communities across a pH gradient in an arable soil. \u003cem\u003eThe ISME Journal\u003c\/em\u003e, 4(10), 1340–1351.\u003c\/li\u003e\n\u003cli\u003eWhite, P.J. and Broadley, M.R. (2003). Calcium in plants. \u003cem\u003eAnnals of Botany\u003c\/em\u003e, 92(4), 487–511.\u003c\/li\u003e\n\u003cli\u003eKabir, M.Y. and Díaz-Pérez, J.C. (2025). Calcium route in the plant and blossom-end rot incidence. \u003cem\u003eHorticulturae\u003c\/em\u003e, 11(7), 807.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-cc-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use garden calcium carbonate: application rates and guide\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eRate depends on soil test results\u003c\/span\u003e\n\u003cp\u003eThe correct application rate for pH correction depends on your current soil pH, target pH, soil type (clay vs sand), and buffering capacity. The rates below are general guidelines. For precise liming, have your soil tested and calculate the requirement based on the neutralising value (54) and your soil's lime requirement figure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eNot for acid-loving plants\u003c\/span\u003e\n\u003cp\u003eThis raises soil pH. Keep it away from blueberries, rhododendrons, azaleas, camellias, heathers and anything else grown in ericaceous compost. If you need calcium without a pH change, use \u003ca href=\"\/products\/granulated-gypsum-clay-breaker\"\u003egranulated gypsum\u003c\/a\u003e instead. Test the pH first; a cheap kit is enough to tell you whether liming is the right call.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication methods\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eVegetable beds and borders\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e about 0.5 kg per m² for a typical bed  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Only if a pH test shows it is needed\u003c\/div\u003e\n\u003cp\u003eThat default assumes a loam at around pH 6.0. The right amount depends on your pH test result and soil type: sandy soils need less, clay more (see the RHS liming table). If your soil is already pH 6.5 or higher, skip it. Scatter evenly, rake into the top few centimetres and water in.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFoliar spray or soil drench\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 0.5–1 g per litre of water  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e As required\u003c\/div\u003e\n\u003cp\u003eAdd the powder to water and stir vigorously. The micronised particles suspend readily at this concentration. Apply as a foliar spray or pour directly around the root zone. For foliar use, strain through a fine sieve before adding to a sprayer to stop nozzle blockages. Delivers calcium directly to actively growing tissue.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFruit trees and established shrubs\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 0.5 kg per m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Late winter \/ early spring, or after harvest\u003c\/div\u003e\n\u003cp\u003eScatter evenly under the canopy from trunk to drip line. Lightly rake into the top few centimetres of soil and water in. The micronised particles begin reacting within days.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eOrchards\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 0.6 kg per m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Late autumn or early spring\u003c\/div\u003e\n\u003cp\u003eBroadcast over the root zone. Work into the soil surface where possible. The higher rate reflects the greater calcium demand of productive orchard trees and the need for ongoing pH management.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawns and turf\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 0.4 kg per m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Autumn or early spring\u003c\/div\u003e\n\u003cp\u003eScatter evenly over the lawn surface. The fine powder settles into the turf canopy with watering or rain. Improves soil pH and calcium availability for root development and cold tolerance. If moss is the problem, remember low pH is one cause among several; our \u003ca href=\"\/collections\/lawn-care\"\u003elawn care range\u003c\/a\u003e covers the others.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSoil mixes and growing media\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eGuideline:\u003c\/strong\u003e 1–3 g per litre of compost or growing medium\u003c\/div\u003e\n\u003cp\u003eIncorporate thoroughly before planting. Buffers pH and provides slow-release calcium throughout the growing season. Start at the lower end for mixes that already contain lime; use the higher end for peat-based media that tend to be acidic.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eRates at a glance\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSituation\u003c\/th\u003e\n\u003cth\u003eRate\u003c\/th\u003e\n\u003cth\u003eTiming\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFoliar spray or soil drench\u003c\/td\u003e\n\u003ctd\u003e0.5–1 g per litre of water\u003c\/td\u003e\n\u003ctd\u003eAs required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVegetable beds and borders\u003c\/td\u003e\n\u003ctd\u003eAbout 0.5 kg per m² (loam at pH 6.0); depends on a pH test\u003c\/td\u003e\n\u003ctd\u003eSkip if pH is already 6.5 or higher\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFruit trees and established shrubs\u003c\/td\u003e\n\u003ctd\u003e0.5 kg per m²\u003c\/td\u003e\n\u003ctd\u003eLate winter \/ early spring, or after harvest\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrchards\u003c\/td\u003e\n\u003ctd\u003e0.6 kg per m²\u003c\/td\u003e\n\u003ctd\u003eLate autumn or early spring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLawns and turf\u003c\/td\u003e\n\u003ctd\u003e0.4 kg per m²\u003c\/td\u003e\n\u003ctd\u003eAutumn or early spring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoil mixes and growing media\u003c\/td\u003e\n\u003ctd\u003e1–3 g per litre of compost\u003c\/td\u003e\n\u003ctd\u003eBefore planting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eStep-by-step for liquid application\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure the powder.\u003c\/strong\u003e 0.5–1 g per litre. A level ½ teaspoon is approximately 1–1.5 g depending on how tightly packed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdd to warm water and stir vigorously.\u003c\/strong\u003e The micronised particles suspend readily but will settle if left standing. Maintain agitation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor foliar use, strain first.\u003c\/strong\u003e Pour through a fine sieve or muslin into the sprayer. Apply as a fine mist to both leaf surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor root drench, pour directly.\u003c\/strong\u003e Apply around the root zone using a watering can. No straining needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFor dry application, scatter and rake in.\u003c\/strong\u003e Spread evenly, work into the top 2–5 cm of soil, and water thoroughly.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003eUse alongside \u003ca href=\"\/products\/powdered-cal-mag-supplement-boron-fulvic-acid-dr-forest\"\u003eCal-Mag for Plants\u003c\/a\u003e for combined calcium and magnesium delivery with boron. Pair with \u003ca href=\"\/products\/polyhalite\"\u003eYorkshire polyhalite\u003c\/a\u003e for a complete secondary nutrient package (Ca, Mg, K, S). For liquid foliar calcium during fruiting, add \u003ca href=\"\/products\/organic-amino-chelated-calcium\"\u003eamino chelated calcium\u003c\/a\u003e. Do not mix with phosphate fertilisers in liquid form; calcium and phosphate precipitate when dissolved together.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage\u003c\/span\u003e\n\u003cp\u003eKeep the bag sealed, cool and dry. It is a stable mineral and does not go off, but damp powder cakes and is harder to measure and sieve. Wear a dust mask when scattering large amounts on a windy day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 4 — FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-cc-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions about calcium carbonate for plants\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq1\"\u003eIs calcium carbonate good for plants?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes, on the right soil. It raises the pH of acidic ground into the 6.0 to 6.5 range where most vegetables, fruit and lawn grasses do best, and it supplies calcium as it dissolves. On soil that is already neutral or alkaline it has little to do, and on acid-loving plants it does harm. A pH test settles it.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq2\"\u003eIs this the same as garden lime or agricultural lime?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eSame mineral, calcium carbonate, but a different particle size and purity. Agricultural lime is typically 2–4 mm particles at 70–85% purity. This product is micronised to 63µ (95% passes a 63 micron sieve) at 96.2% purity. The finer particle size means it reacts in weeks rather than months, and the higher purity means more calcium per gram applied.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq3\"\u003eHow is calcium carbonate different from gypsum?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eGypsum is calcium sulphate. It supplies calcium and sulphur but is pH-neutral, so it does not lime the soil. Calcium carbonate supplies calcium and raises pH by neutralising acidity. Use \u003ca href=\"\/products\/granulated-gypsum-clay-breaker\"\u003egypsum\u003c\/a\u003e when you want calcium without a pH change, on alkaline soil, or to open up clay. Use calcium carbonate when you need both calcium and a higher pH.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq4\"\u003eWill it raise my soil pH too high?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is hard to overdo with calcium carbonate at sensible rates. The reaction needs soil acidity to drive it, and it slows as pH climbs towards neutral. That makes it a safer choice than quicklime or hydrated lime, both of which are caustic and can push pH up fast. Still, lime to a test rather than by habit, and re-test the following season before adding more.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq5\"\u003eHow quickly does micronised lime work?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThe powder starts dissolving within days of contact with moist soil. A measurable pH change typically shows within 2–4 weeks under active growing conditions. Coarse agricultural lime may take 6–12 months to do the same, and the largest chips take years.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq6\"\u003eCan I use calcium carbonate as a liquid calcium spray for tomatoes?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYou can. At 0.5–1 g per litre the powder suspends in water for a foliar spray or a root drench; strain it before it goes in a sprayer. Be realistic about what a spray achieves: calcium moves in the xylem, not the phloem, so a leaf spray does not reliably reach the fruit, and trials on foliar calcium for blossom end rot are mixed. Steady watering and calcium in the root zone do more. Our \u003ca href=\"\/blogs\/the-dr-forest-blog\/blossom-end-rot-tomatoes\"\u003eblossom end rot guide\u003c\/a\u003e goes through it.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq7\"\u003eCan I mix it with other fertilisers?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAs a dry amendment, yes; it mixes well with granular fertilisers and soil mixes. In liquid form, do not mix with phosphate fertilisers, because dissolved calcium and phosphate react to form insoluble calcium phosphate. Also avoid mixing with acidic liquid feeds, as the acid will react with the carbonate. Compatible with most granular and dry organic fertilisers.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq8\"\u003eHow much garden lime do I need to raise soil pH?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThis depends on your current soil pH, target pH, soil type, and organic matter. Clay soils and high-organic-matter soils need more lime to shift pH than sandy soils. As a starting point: 200–400 g\/m² will typically raise the pH of a light sandy soil by 0.5–1.0 units. For precise calculations, have your soil tested and use the neutralising value (54) to work out the requirement.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq9\"\u003eIs calcium carbonate safe for children, pets, bees and wildlife?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is ground limestone, the same mineral as chalk, and safe around children, pets, bees, birds and wildlife at garden rates. Avoid breathing the dust when scattering it and keep the bag out of reach. Do not apply it to ericaceous or acid-loving plants.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-cc-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-cc-faq10\"\u003eIs this organic, and where does it come from?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is a single natural mineral: limestone from the quarry, crushed and micronised, with nothing added. Vegan, and packed by hand in Stockport, Greater Manchester. We describe it as a natural mineral rather than making a certification claim. If you want a slower, longer-lasting calcium carbonate from a different source, \u003ca href=\"\/products\/organic-sea-shell-meal\"\u003esea shell meal\u003c\/a\u003e does the same job over years rather than weeks.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\n\n\n\u003c!-- PAA FAQ additions garden-lime 2026-10-07 merge --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-cc-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-cc-faq-paa1\" class=\"drf-faq-q\"\u003eWhen should I apply garden lime?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eLate autumn to early spring for most jobs. Use 0.5 kg per m² under fruit trees and established shrubs in late winter or early spring, or after harvest; 0.6 kg per m² in orchards in late autumn or early spring; and 0.4 kg per m² on lawns in autumn or early spring. Scatter it evenly, rake it lightly into the top few centimetres where you can, and water it in. Because it's micronised, it starts reacting within days, and you'll see a measurable pH change in 2–4 weeks in growing conditions.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-cc-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-cc-faq-paa2\" class=\"drf-faq-q\"\u003eCan lime do any harm?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eUsed on the wrong plants or soil, yes. Acid-loving plants such as blueberries, rhododendrons, azaleas, camellias and heathers suffer if the pH goes up. Liming soil that's already neutral or alkaline adds nothing and can lock up trace elements. In liquid mixes it reacts with phosphate fertilisers and both drop out as an insoluble solid. Calcium carbonate slows down as pH passes 7, so it's hard to overdo, but test your soil before liming rather than guessing.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-cc-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-cc-faq-paa3\" class=\"drf-faq-q\"\u003eWhat is garden lime used for?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eTwo jobs. It raises the pH of acid soil, and it supplies calcium: at 54.1% calcium oxide it's the most concentrated calcium source in our range. Gardeners use it to sweeten acid vegetable beds, especially for brassicas, to lime lawns and orchards on acid ground, as a calcium foliar spray or drench at 0.5–1 g per litre, and as a pH buffer in mushroom substrate. Don't use it around blueberries, rhododendrons, azaleas or camellias.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-cc-faq-paa4\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-cc-faq-paa4\" class=\"drf-faq-q\"\u003eWhere can I buy garden lime in the UK?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eHere. This is 96.2% pure micronised calcium carbonate from natural limestone, ground so that 95% passes a 63 micron sieve, in 500 g, 1.5 kg and 3 kg bags posted to any UK address. Because it's so fine, it reacts much faster than coarse agricultural lime, so a small bag goes further than you might expect for pH correction in beds and pots.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"500g","offer_id":45735732838587,"sku":"DF-CALCARB-500G","price":7.0,"currency_code":"GBP","in_stock":true},{"title":"1.5kg","offer_id":45735732871355,"sku":"DF-CALCARB-1.5","price":13.0,"currency_code":"GBP","in_stock":true},{"title":"3kg","offer_id":45735732904123,"sku":"DF-CALCARB-3","price":20.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/organic-micro-cal-carb-micronised-calcium-carbonate-ph-8-fast-663.webp?v=1785512769"},{"product_id":"organic-nitrogen-fertiliser","title":"Organic Nitrogen Fertiliser | 13% N","description":"\u003c!-- Dr Forest — Organic Nitrogen Fertiliser (Nitrogen Extract) Product Page --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- Prefix: drf-ne- (nitrogen extract) --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- Layout: 4-tab single-ingredient · Design System v1.0 (v2) --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- Pure CSS radio-input tabs. No JavaScript. 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font-size: 1.1em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border-radius: 0; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '\\2212'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 640px; }\n\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.5em auto; }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput checked id=\"drf-ne-tab1\" name=\"drf-ne-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-ne-tab2\" name=\"drf-ne-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-ne-tab3\" name=\"drf-ne-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-ne-tab4\" name=\"drf-ne-tabset\" type=\"radio\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-ne-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-ne-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-ne-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-ne-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003c!-- ============ TAB 1: OVERVIEW ============ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ne-panel1\"\u003e\n\u003ch2\u003eHigh-nitrogen organic certified fertiliser — 13% plant-based amino-acid nitrogen for strong, leafy growth\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold drf-tldr\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eIn short\u003c\/span\u003e\n\u003cp\u003eNitrogen fertiliser from Dr Forest is a 13% plant-based amino-acid feed, made from fermented plant sugars, for a high-N push without animal meals. It greens up leafy vegetables, brassicas and lawns quickly, then keeps feeding for around six weeks. High in sulphur, low in salt, and entirely plant-based.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eOrganic Certified\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e13% Nitrogen\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003ePlant-Based\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eHigh in Sulphur\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eLow Chloride \u0026amp; Salt\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eFast + Slow Release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eNitrogen Extract is an organic certified, high-nitrogen fertiliser supplying 13% nitrogen as amino acids and proteins\u003c\/strong\u003e — the form plants and soil microbes use to build leaves, stems and chlorophyll. It is made from fermented plant sugars (molasses), with the nitrogen-rich proteins drawn off and dried into a clean 3 mm granule (sometimes sold as nitrogen pellets). A natural, plant-based source of nitrogen, organic certified and made in the UK.\u003c\/p\u003e\n\u003cp\u003eUnlike fast synthetic salts such as ammonium nitrate, the nitrogen here is held in plant proteins. Roughly half is available within the first couple of weeks for a quick green-up, and the rest releases steadily over the following weeks as soil biology breaks the granule down. You get the speed of a feed and the staying power of an amendment, in one plant-based granule that is also high in sulphur and very low in chloride and salt.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e13%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNitrogen (N)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e~50%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eReleased in 14 days\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e6+ weeks\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSustained feed\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e100%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePlant-based\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat a high-nitrogen plant food is used for in the garden\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeafy vegetables and brassicas\u003c\/strong\u003e — lettuce, spinach, chard, cabbage, kale, sprouts and other crops grown for their foliage respond fast to available nitrogen, putting on bigger, deeper-green leaves\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpring green-up and growth spurts\u003c\/strong\u003e — a targeted nitrogen boost for plants that have stalled, paled, or need to bulk up early in the season before they flower or fruit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLawns\u003c\/strong\u003e — a high-nitrogen lawn feed that drives strong green colour and dense growth; the slow-release tail keeps the lawn fed for weeks rather than a single flush and crash\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHungry feeders mid-season\u003c\/strong\u003e — sweetcorn, courgettes, squash and similar crops that draw heavily on nitrogen during their main growth phase\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrecting nitrogen deficiency\u003c\/strong\u003e — pale or yellowing lower leaves, slow growth and weak stems are classic nitrogen-hunger signs that this addresses directly\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTopping up the green stage of a feeding plan\u003c\/strong\u003e — use it for early leaf and stem building, then switch to a balanced or high-potash feed as plants move into flower and fruit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eA plant-based nitrogen with the kick of a feed and the patience of an amendment.\u003c\/div\u003e\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eNitrogen Extract (this product)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e13% nitrogen, organic certified and plant-based — from fermented plant sugars\u003c\/li\u003e\n\u003cli\u003eAmino-acid and protein nitrogen plus organic carbon and humic substances that feed soil life\u003c\/li\u003e\n\u003cli\u003eFast start then a slow-release tail over several weeks\u003c\/li\u003e\n\u003cli\u003eHigh in sulphur, very low in chloride and salt — a low risk of salt build-up\u003c\/li\u003e\n\u003cli\u003eNo strong smell, clean to handle and store\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eSynthetic nitrogen (ammonium nitrate, urea)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eA salt feed — fast, but prone to leaching and, with urea, loss to the air as ammonia\u003c\/li\u003e\n\u003cli\u003eFeeds the plant but not the soil; adds no carbon and no biology\u003c\/li\u003e\n\u003cli\u003eHigher salt index, so more risk of scorch and salt build-up if overdone\u003c\/li\u003e\n\u003cli\u003eNot permitted in organic growing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cem\u003eDr Forest — made by growers, backed by science. Organic certified, plant-based, and packed in recyclable, home-compostable paper.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ============ TAB 2: THE SCIENCE ============ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ne-panel2\"\u003e\n\u003ch2\u003eThe science of amino-acid nitrogen: why the form of nitrogen matters as much as the amount\u003c\/h2\u003e\n\u003ch3\u003ePlants don't only eat nitrate\u003c\/h3\u003e\n\u003cp\u003eFor most of the last century the textbook view was that plants take up nitrogen only as nitrate or ammonium — mineral forms — and that organic nitrogen has to be broken down by microbes into those minerals first. That view is now out of date. Plants take up intact amino acids and small peptides directly through their roots, and in many soils organic nitrogen is a significant part of what they actually use (Näsholm et al., 1998; Näsholm, Kielland \u0026amp; Ganeteg, 2009).\u003c\/p\u003e\n\u003cp\u003eThat is what this product supplies. The nitrogen here is held in amino acids and proteins, drawn from fermented plant material and concentrated into a granule. Some is taken up directly; the rest is mineralised by soil biology at a measured pace. The result is a feed that works with the soil rather than flooding it.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eWhy plant-based amino-acid nitrogen behaves differently\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eWhat's in the granule\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNitrogen (13%) as amino acids and proteins — both directly available and microbially released\u003c\/li\u003e\n\u003cli\u003eSulphur (as SO₃) — needed to build proteins and chlorophyll; nitrogen and sulphur work together, and a sulphur shortfall limits how well plants use nitrogen\u003c\/li\u003e\n\u003cli\u003eOrganic carbon and humic substances — food and habitat for the soil microbes that cycle nutrients\u003c\/li\u003e\n\u003cli\u003eTrace elements and micronutrients carried through from the plant source material\u003c\/li\u003e\n\u003cli\u003eVery low chloride and salt — a low salt index, so little risk of osmotic stress or salt build-up\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eWhy that matters in the soil\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLess waste: nitrate leaches readily and urea can gas off as ammonia; protein-bound nitrogen is held until biology releases it (Cameron, Di \u0026amp; Moir, 2013)\u003c\/li\u003e\n\u003cli\u003eFeeds biology, not just the plant: the carbon and humic fraction supports the microbes that drive nutrient cycling and build soil organic matter (Nardi et al., 2009; Ferro et al., 2022)\u003c\/li\u003e\n\u003cli\u003eLower nitrate loading than synthetic nitrogen, with comparable growth when organic and mineral inputs are compared (Cardarelli et al., 2023)\u003c\/li\u003e\n\u003cli\u003eSulphur in the same granule removes a common hidden limit on nitrogen use efficiency (Marschner, 2012)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eFour mechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eDirect amino-acid uptake\u003c\/h4\u003e\n\u003cp\u003eRoots carry transporters for amino acids and short peptides and absorb them intact, short-cutting part of the soil nitrogen cycle. This is most useful in cooler soils and early in the season, when microbial mineralisation of nitrogen is slow and mineral nitrogen is scarce (Näsholm et al., 1998; 2009).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eDual-speed release\u003c\/h4\u003e\n\u003cp\u003eAround half of the nitrogen becomes available within roughly the first fortnight for a visible green-up, and the remainder releases gradually over several weeks as soil organisms digest the protein. One application feeds across a growth phase rather than spiking and crashing — and there is far less to leach away between feeds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eNitrogen and sulphur together\u003c\/h4\u003e\n\u003cp\u003eProteins and chlorophyll are built from both nitrogen and sulphur. When sulphur is short, plants cannot fully use the nitrogen they take up, and growth and leaf colour suffer. Supplying sulphur in the same feed keeps the two in step and improves how efficiently the nitrogen is used (Marschner, 2012).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eCarbon for the soil, not just nitrogen for the plant\u003c\/h4\u003e\n\u003cp\u003eThe organic carbon and humic substances in the granule feed the microbial community that releases nutrients, holds them against leaching, and builds stable organic matter. Studies that pair organic inputs with growing crops consistently show higher soil organic carbon and microbial activity than mineral-only feeding (Ferro et al., 2022; Liu et al., 2021).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eNäsholm, T. et al. (1998). Boreal forest plants take up organic nitrogen. \u003cem\u003eNature\u003c\/em\u003e, 392, 914–916.\u003c\/li\u003e\n\u003cli\u003eNäsholm, T., Kielland, K. \u0026amp; Ganeteg, U. (2009). Uptake of organic nitrogen by plants. \u003cem\u003eNew Phytologist\u003c\/em\u003e, 182, 31–48.\u003c\/li\u003e\n\u003cli\u003eCameron, K.C., Di, H.J. \u0026amp; Moir, J.L. (2013). Nitrogen losses from the soil\/plant system: a review. \u003cem\u003eAnnals of Applied Biology\u003c\/em\u003e, 162, 145–173.\u003c\/li\u003e\n\u003cli\u003eCardarelli, M. et al. (2023). Organic vs synthetic nitrogen and nitrate accumulation. \u003cem\u003eAgronomy \/ Frontiers in Plant Science\u003c\/em\u003e. [nitrate reduction with organic sources]\u003c\/li\u003e\n\u003cli\u003eNardi, S. et al. (2009). Physiological effects of humic substances on higher plants. \u003cem\u003eSoil Biology \u0026amp; Biochemistry\u003c\/em\u003e, 41, 1296–1307.\u003c\/li\u003e\n\u003cli\u003eFerro, N.D. et al. (2022). Organic and mineral fertilisation and soil organic carbon. \u003cem\u003eGeoderma \/ Soil \u0026amp; Tillage Research\u003c\/em\u003e.\u003c\/li\u003e\n\u003cli\u003eLiu, J. et al. (2021). Organic amendment effects on soil enzyme activity and yield. \u003cem\u003eApplied Soil Ecology\u003c\/em\u003e.\u003c\/li\u003e\n\u003cli\u003eMarschner, H. (2012). \u003cem\u003eMineral Nutrition of Higher Plants\u003c\/em\u003e (3rd ed.). Academic Press. [nitrogen and sulphur nutrition]\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ============ TAB 3: HOW TO USE ============ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ne-panel3\"\u003e\n\u003ch2\u003eHow to use Nitrogen Extract: rates for beds, lawns, containers and leafy crops\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eA little goes a long way\u003c\/span\u003e\n\u003cp\u003eThis is a concentrated 13% nitrogen feed, so it is used at much lower rates than a balanced blend or a soil conditioner. Scatter the granules evenly, keep them off leaves and stems, and water in well. Apply to moist soil during active growth. Less, more often, beats one heavy dose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eHow much, and how often\u003c\/h3\u003e\n\u003cp\u003eOne application feeds for around six weeks: roughly half the nitrogen releases in the first fortnight, the rest over the following weeks. Because of that, do not reapply more often than every five to six weeks. Across all uses, a single dressing sits between 20 and 55 g per m² (a rounded handful is roughly 30–40 g). Match the rate to how hungry the crop is, using the guide below.\u003c\/p\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBase dressing — before sowing or planting\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 30–50 g per m² | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once, at bed preparation\u003c\/div\u003e\n\u003cp\u003eScatter over the bed and rake or fork lightly into the top 5–10 cm a few days before sowing or planting leafy and hungry crops. Use the lower rate on already-fertile soil, the higher rate where growth has been weak or the bed is freshly dug.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eHeavy nitrogen feeders — top dressing\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 40–55 g per m² | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 5–6 weeks through active growth\u003c\/div\u003e\n\u003cp\u003eThe hungriest leafy crops: brassicas (cabbage, cauliflower, calabrese and broccoli, Brussels sprouts, kale), leeks, sweetcorn, courgettes, squash and pumpkins, rhubarb, and spinach and chard. Scatter around the plants, keep granules off the foliage, work in lightly and water in. Two to three feeds across the season is usually plenty; stop once growth is strong and well coloured.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSalad and moderate leafy crops — top dressing\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 25–40 g per m² | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 5–6 weeks during leafy growth\u003c\/div\u003e\n\u003cp\u003eLettuce and salad leaves, beetroot and chard tops, leafy herbs, and any plant showing pale lower leaves or slow, stalled growth. Lighter, more frequent feeding suits fast salad crops better than one heavy dose.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eEstablished lawns\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 25–40 g per m² | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Spring to mid-summer; once or twice, 6–8 weeks apart\u003c\/div\u003e\n\u003cp\u003eSpread as evenly as you can on a still day and water in well. The fast fraction greens the lawn up, the slow tail keeps it fed for weeks. Avoid applying in drought or to dry turf, and stop feeding nitrogen by late summer so you are not pushing soft growth into autumn.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eNew lawns and overseeding\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 30–40 g per m² (new) · 20–30 g per m² (overseeding) | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once, at sowing or turfing\u003c\/div\u003e\n\u003cp\u003eFor a new lawn, work into the top 5 cm of the prepared seedbed before sowing or laying turf. For overseeding, scatter over the area after seeding and water in thoroughly. The slow release feeds through establishment without scorching young roots.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFruiting crops — early stage only\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 20–30 g per m² | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once or twice, before flowering\u003c\/div\u003e\n\u003cp\u003eTomatoes, peppers, chillies, aubergines, beans and peas need nitrogen only to build their early leaf framework. Feed during vegetative growth, then stop at first flower and switch to a high-potash feed such as Bloom 2-8-10 or Late Bloom 0-5-10, or too much nitrogen pushes leaf at the expense of fruit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRoses and flowering shrubs — spring nudge\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 20–30 g per m² | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once, in spring\u003c\/div\u003e\n\u003cp\u003eA single spring application drives strong early foliage. Follow with a balanced or high-potash rose feed for the flowering flush, and avoid further nitrogen later in the season.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003ePots and containers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 2–4 g per litre of compost | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Mixed in at potting, or a light top-up every 6 weeks\u003c\/div\u003e\n\u003cp\u003eMix into the compost when potting up leafy plants, or lightly top-dress established pots and water in. Containers hold a small soil volume, so keep to the lower rate and do not over-feed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eEasy to overdo — don't\u003c\/span\u003e\n\u003cp\u003eEven with a low salt index, too much nitrogen drives soft, sappy growth that flops, attracts aphids and resists flowering and fruiting; very heavy doses on dry soil can scorch. Stick to the rates above, water in, and reach for a balanced feed once leafy growth is established.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eStep by step\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure.\u003c\/strong\u003e A level tablespoon is roughly 15–20 g. Weigh the first few applications until you have your eye in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScatter evenly.\u003c\/strong\u003e Spread thinly across the area or around the base of plants. Keep granules off leaves, stems and crowns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWork in lightly\u003c\/strong\u003e where you can — a shallow rake or hoe on beds; for established plants and lawns, leave on the surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater in well.\u003c\/strong\u003e Moisture starts the release and moves the first nitrogen down to the roots. If no rain is forecast within 48 hours, water the area to help the granules break down and prevent scorch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRepeat on schedule\u003c\/strong\u003e — no more often than every five to six weeks — through the growing season, then taper off as plants move into flower and fruit. On light, sandy soils, split feeds and keep to the lower rates. Store sealed, cool and dry.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003ePair with \u003cstrong\u003eSeaweed Meal\u003c\/strong\u003e for the trace elements and biostimulant compounds a straight nitrogen feed doesn't carry. Move to \u003cstrong\u003eBloom 2-8-10\u003c\/strong\u003e or \u003cstrong\u003eLate Bloom 0-5-10\u003c\/strong\u003e once crops set flower and fruit. For an all-round leafy-stage feed, use alongside \u003cstrong\u003eVeg 4-4-4\u003c\/strong\u003e. On lawns, follow with \u003cstrong\u003eVolcanic Rock Dust\u003c\/strong\u003e to remineralise the soil beneath the turf.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eIn the Dr Forest living-soil programme\u003c\/span\u003e\n\u003cp\u003eWithin the Dr Forest living-soil programme, this is the mid-flower nitrogen booster for the \u003cstrong\u003eMax yield\u003c\/strong\u003e build — about \u003cstrong\u003e0.6 g per litre of soil in total, split across two mid-flower doses\u003c\/strong\u003e. It is the lever that adds weight while potash and magnesium stay below their ceilings. See the \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eLiving Soil Kit\u003c\/a\u003e and \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eRefills\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ============ TAB 4: FAQ ============ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ne-panel4\"\u003e\n\u003ch2\u003eFrequently asked questions about Nitrogen Extract\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq1\"\u003eIs this an organic nitrogen fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. It is organic certified: a plant-based nitrogen feed of amino-acid and protein nitrogen from fermented plant sugars (molasses), not a synthetic ammonium-nitrate or urea salt. The granule also carries organic carbon and humic substances that feed the soil life which releases the nitrogen.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq2\"\u003eWhat is amino-acid nitrogen — and what does this product do?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eNitrogen held as amino acids and proteins rather than as a mineral salt. Plants can take up some of it directly; soil microbes release the rest steadily. In the garden it is a high-nitrogen (13% N) feed for leafy growth, spring green-up, lawn colour, and correcting nitrogen hunger, with a slow-release tail that continues for around six weeks (roughly half available in about a fortnight).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq3\"\u003eIs this a good high-nitrogen fertiliser for plants?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eAt 13% nitrogen it is one of the higher-nitrogen organic certified feeds in the range, without the leach-and-spike behaviour of synthetic salts. Best for the leaf-and-stem stage: leafy greens, brassicas, sweetcorn, lawns, and plants showing nitrogen hunger. Ease off once buds and fruit set — switch toward a balanced or potash-led feed so you do not push leaf at the expense of flowers and fruit.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq4\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq4\"\u003eHow much do I apply?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThis is a concentrated 13% N feed — lower rates than a balanced blend. Typical single dressing: about 20–55 g per m² (a rounded handful ≈ 30–40 g). Bed prep: 30–50 g per m² once. Heavy nitrogen feeders (top dress): 40–55 g per m² every 5–6 weeks in active growth. Leafy crops: 25–40 g per m² every 5–6 weeks. Lawns: 25–40 g per m², spring to mid-summer, once or twice 6–8 weeks apart. Pots: 2–4 g per litre of compost. Water in; keep granules off foliage and crowns. Prefer the pack in hand.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq5\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq5\"\u003eHow quickly will I see results?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eRoughly half the nitrogen is available within about a fortnight, so leafy green-up is often visible in one to two weeks in active conditions. The rest releases over the following weeks — one dressing keeps feeding rather than spiking and vanishing.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq6\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq6\"\u003eWill it scorch plants — can you use too much?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eLow salt index versus synthetic nitrogen, but it is still 13% N. Over-application drives soft, sappy growth, aphids, and poor flowering\/fruiting; heavy doses on dry soil can scorch. Stick to the rate band, water in, and do not reapply early because “nothing happened” in the first few days.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq7\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq7\"\u003eWhat are the signs of nitrogen deficiency — will this fix it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eClassic signs: pale or yellowing older leaves first, slow growth, thin weak stems (nitrogen is mobile in the plant). A 13% amino-acid nitrogen dressing addresses that hunger: quick green-up from the fast half, sustained feed from the slow half. Also check watering, compaction and cold soil before blaming feed alone.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq8\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq8\"\u003eHow does it compare to synthetic nitrogen (ammonium nitrate \/ urea)?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eUrea is the agronomy “king” nickname for concentrated synthetic N (~46% N) — not an organic garden badge. Synthetic N is a fast salt: quick, leachy, and adds little to soil life. This product holds nitrogen in protein\/amino-acid form until biology releases it, adds organic carbon and humic substances, and is organic certified, which synthetic nitrogen is not. Use it when you want leafy drive without a salt spike; use a balanced bag (All Purpose 4-4-4) when the whole NPK job matters.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq9\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq9\"\u003eIs it suitable for vegan and plant-based growing?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. It is suitable for vegan gardening. The nitrogen is plant-based, from fermented molasses, with no animal meals. Low odour compared with many animal-meal fertilisers.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq10\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq10\"\u003eIs it safe around children, pets and wildlife?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003ePlant-based, low salt, no strong smell to attract animals. Still: store sealed, keep children and pets off treated areas until watered in, wash hands after handling.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq11\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq11\"\u003eCan I use it on all plants, including edibles?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes, on edibles, ornamentals and lawns. It shines on leafy and hungry crops and during early, leafy growth. Go easy on flowering and fruiting plants once they have set buds — too much nitrogen then pushes leaves at the expense of flowers and fruit, so switch to a balanced or high-potash feed at that stage.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq12\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ne-faq12\"\u003eWhere is it from and how should I store it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThe nitrogen is plant-based, extracted from fermented plant sugars (molasses) and dried into a clean granule. Keep it sealed in a cool, dry place; the granule is low in salt and stores well. Packed in recyclable, home-compostable paper.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ne-faq-paa1\" class=\"drf-faq-q\"\u003eWhen should I apply it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eDuring leafy growth, mostly spring to midsummer. Rake 30–50 g per m² into beds a few days before sowing or planting. Top-dress brassicas, leeks, sweetcorn and other hungry crops at 40–55 g per m² every 5–6 weeks, and salads at 25–40 g. Feed lawns at 25–40 g per m² once or twice from spring to midsummer, 6–8 weeks apart, and stop by late summer. Give tomatoes, peppers, beans and peas 20–30 g per m² once or twice before flowering only.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ne-faq-paa2\" class=\"drf-faq-q\"\u003eHow can I raise nitrogen in my soil organically?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eFor this season's crops, use a concentrated plant-based feed like this one: 30–50 g per m² raked in a few days before planting, then 25–55 g per m² every 5–6 weeks for hungry leafy crops. Roughly half of it is available in about a fortnight and the rest follows over the next few weeks. For the long term, grow peas and beans, which fix their own nitrogen, and keep adding compost so soil life has something to work with. This product is organic certified and vegan; the nitrogen comes from fermented molasses.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ne-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ne-faq-paa3\" class=\"drf-faq-q\"\u003eIs Epsom salt a nitrogen fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNo. Epsom salt is magnesium sulphate, so it supplies magnesium and sulphur but no nitrogen. Pale, yellowing older leaves can come from either a nitrogen or a magnesium shortage. With nitrogen, the whole leaf pales evenly. With magnesium, the yellow sits between green veins. For nitrogen, use a nitrogen feed such as this one at 13% N.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"1.5kg","offer_id":46312501608635,"sku":"DF-NITROGEN-1.5","price":12.99,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":46312501641403,"sku":"DF-NITROGEN-4","price":26.0,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":46312501674171,"sku":"DF-NITROGEN-9","price":48.99,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":46312501706939,"sku":"DF-NITROGEN-15","price":70.0,"currency_code":"GBP","in_stock":true},{"title":"30kg","offer_id":57795182723446,"sku":"DF-NITROGEN-30","price":136.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/organic-nitrogen-fertiliser-two-brown-compostable-paper-bags-743.png?v=1786553592"},{"product_id":"organic-liquid-seedling-fertiliser","title":"Liquid Seedling Fertiliser | Root Starter","description":"\u003c!-- Dr Forest — Liquid Seedling Fertiliser Product Page (v2 — Design System v1.0) --\u003e\n\u003c!-- Prefix: sd · 4-tab layout --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; font-weight: 600; font-size: 0.85em; letter-spacing: 0.2em; text-transform: uppercase; 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padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\n\n\u003c!-- ===== 4-TAB BODY (Overview \/ The Science \/ How to Use \/ FAQ) ===== --\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-sd-tabset\" id=\"drf-sd-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-sd-tabset\" id=\"drf-sd-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-sd-tabset\" id=\"drf-sd-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-sd-tabset\" id=\"drf-sd-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-sd-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-sd-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-sd-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-sd-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-sd-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eLiquid fertiliser for seedlings: a calcium and micronutrient root starter for seed soaks, dips and drenches\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003e4.13% Calcium\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eFe · Zn · Mn · Mo\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eHumic \u0026amp; Fulvic Acid\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSeed Soak \u0026amp; Drench\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eRecycled Plastic Bottle\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003eHandcrafted in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eThis liquid fertiliser for seedlings is a starter feed, built around calcium, four micronutrients and humic and fulvic acids, for the first two to four weeks of a plant's life.\u003c\/strong\u003e A germinating seed builds its first root tips and cell walls from a small store of reserves, and this feed puts calcium, zinc, manganese and molybdenum next to the new root from the start. Dr Forest makes it as a thick, calcium-rich suspension (4.13% Ca) for a seed soak before sowing or a drench straight after planting, both at 3 to 3.5 ml per litre, and for a root dip at transplanting at 10 ml per litre.\u003c\/p\u003e\n\u003cp\u003eIt is a low-nitrogen seedling feed on purpose. Young plants want roots before leaves, and a nitrogen-led liquid pushes the wrong end of the plant. It comes in 500 ml and 1 litre recycled plastic bottles.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e4.13%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCalcium (Ca)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e1.24%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSulphur (S)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eFe Zn Mn Mo\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eMicronutrients\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e3–3.5 ml\/L\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSeed soak \u0026amp; drench rate\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat a seedling fertiliser is used for in the garden\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeed soaking before sowing\u003c\/strong\u003e — 6 to 12 hours in the diluted feed puts calcium, micronutrients and humic substances on and in the seed coat before it goes in the compost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoot dip at transplanting\u003c\/strong\u003e — a 10 to 30 second dip coats bare roots with a nutrient film as they go into their final position.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoot drench after sowing or planting out\u003c\/strong\u003e — 1 litre of diluted feed per m² puts calcium where the first root tips will reach it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetter germination and emergence\u003c\/strong\u003e — in a published trial, seed soaked in manganese or zinc sulphate germinated and emerged better than untreated seed (see The Science).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBigger root systems\u003c\/strong\u003e — in a meta-analysis of published trials, humic substances raised root dry weight by about a fifth on average.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule trays, seed beds and plug plants\u003c\/strong\u003e — anything raised from seed or planted out young: tomatoes, chillies, brassicas, salads, beans, sweetcorn and bedding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhy a dedicated seedling feed rather than a diluted general-purpose liquid?\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eDr Forest Liquid Seedling Fertiliser\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCalcium-led at 4.13%, for the cell walls of new root tips\u003c\/li\u003e\n\u003cli\u003eIron, zinc, manganese and molybdenum at seedling-scale doses, with fulvic acid as a natural chelator\u003c\/li\u003e\n\u003cli\u003eHumic and fulvic acids for root branching and water uptake through the seed coat\u003c\/li\u003e\n\u003cli\u003eSafe for direct seed contact at 3 to 3.5 ml per litre\u003c\/li\u003e\n\u003cli\u003eOne bottle, three jobs: soak, dip, drench\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eGeneral-purpose liquid feed, watered down\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNitrogen-led, so it favours leaf over root at the stage roots matter most\u003c\/li\u003e\n\u003cli\u003eMost liquid feeds carry no calcium at all\u003c\/li\u003e\n\u003cli\u003eDiluting a strong feed enough to be seed-safe leaves the trace elements at background levels\u003c\/li\u003e\n\u003cli\u003eNo humic or fulvic fraction\u003c\/li\u003e\n\u003cli\u003eFormulated for an established plant with a working root system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eHandcrafted in Stockport\u003c\/span\u003e\n\u003cp\u003eEvery Dr Forest product is made by hand in small batches at our workshop in Stockport, Greater Manchester, with organic ingredients where they exist. If you want the background on the humic and fulvic fraction, read \u003ca href=\"\/blogs\/the-dr-forest-blog\/humic-vs-fulvic-acid\"\u003eHumic vs fulvic acid: the difference, and which you need\u003c\/a\u003e. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 2 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-sd-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eThe science of seedling nutrition: why the first fortnight is a calcium and trace-element problem\u003c\/h2\u003e\n\u003ch3\u003eWhat is in the bottle\u003c\/h3\u003e\n\u003cp\u003eA thick brown suspension (SG 1.1, pH 8 to 9) carrying calcium and sulphur as the main minerals, a background of potassium and magnesium, four micronutrients and a humic and fulvic acid fraction. Nitrogen and phosphorus are not declared in the analysis. It goes on at sowing and planting out, and a crop-specific feed takes over once the seedlings are established.\u003c\/p\u003e\n\u003cp\u003eThe humic acids work on the root (mechanism 04 below). The fulvic acid is a natural chelator that helps keep iron, zinc and manganese in plant-available form in the compost immediately around the seed. There is a longer explanation in \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-fulvic-acid\"\u003eWhat is fulvic acid?\u003c\/a\u003e.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eAnalysis\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eElement\u003c\/th\u003e\n\u003cth\u003eContent\u003c\/th\u003e\n\u003cth\u003eRole in the seedling\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcium (Ca)\u003c\/td\u003e\n\u003ctd\u003e4.13%\u003c\/td\u003e\n\u003ctd\u003eCell wall cross-linking; root tip and shoot tip growth\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSulphur (S)\u003c\/td\u003e\n\u003ctd\u003e1.24%\u003c\/td\u003e\n\u003ctd\u003eSulphur amino acids and proteins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotassium (K), organic\u003c\/td\u003e\n\u003ctd\u003e2,667 mg\/L\u003c\/td\u003e\n\u003ctd\u003eCell turgor and water regulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium (Mg)\u003c\/td\u003e\n\u003ctd\u003e734 mg\/L\u003c\/td\u003e\n\u003ctd\u003eChlorophyll core once the cotyledons green\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIron (Fe)\u003c\/td\u003e\n\u003ctd\u003e160 mg\/L\u003c\/td\u003e\n\u003ctd\u003eChlorophyll synthesis; electron transport\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZinc (Zn)\u003c\/td\u003e\n\u003ctd\u003e71 mg\/L\u003c\/td\u003e\n\u003ctd\u003eAuxin (IAA) levels in growing shoots; part of thousands of proteins\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManganese (Mn)\u003c\/td\u003e\n\u003ctd\u003e64 mg\/L\u003c\/td\u003e\n\u003ctd\u003eWater-splitting in photosystem II; enzyme activation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMolybdenum (Mo)\u003c\/td\u003e\n\u003ctd\u003e8 mg\/L\u003c\/td\u003e\n\u003ctd\u003eNitrate reductase cofactor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eCalcium and sulphur are declared as percentages and the remaining elements in milligrams per litre, as in the guaranteed analysis. At the 3 to 3.5 ml per litre soak and drench rate, each litre of diluted solution carries roughly 125 to 160 mg of calcium, half a milligram of iron and 0.02 to 0.03 mg of molybdenum: seedling-scale quantities, deliberately.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eA seedling cannot borrow calcium from an old leaf. It has to be at the root tip when the root tip is growing.\u003c\/div\u003e\n\u003ch3\u003eMechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eSoaking seeds in micronutrient solutions raises germination and emergence\u003c\/h4\u003e\n\u003cp\u003eFarooq, Wahid and Siddique (2012, \u003cem\u003eJournal of Soil Science and Plant Nutrition\u003c\/em\u003e) reviewed the seed-treatment literature. Priming echinacea seed in a 0.1% manganese sulphate solution raised germination by 36% and field emergence by 27%, and a 0.05% zinc sulphate soak raised them by 38% and 41%. Across 48 trials in eastern India, molybdenum applied by seed priming lifted mean yield by 17 to 22% over the no-molybdenum control. Those trials used single-nutrient solutions at their own strengths; read the figures as the direction of the effect.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eA seed soak is a simple form of priming\u003c\/h4\u003e\n\u003cp\u003ePaparella and colleagues (2015, \u003cem\u003ePlant Cell Reports\u003c\/em\u003e) describe priming as controlled water uptake that switches on pre-germinative metabolism, including DNA repair and antioxidant pathways, stopped before the radicle breaks through. A 6 to 12 hour soak, drained and sown straight away, works on the same principle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eCalcium is immobile, so it has to arrive with the root\u003c\/h4\u003e\n\u003cp\u003eCalcium cross-links the pectin in the middle lamella, the cement between new cells, and it is poorly remobilised from old tissue through the phloem (Thor, 2019, \u003cem\u003eFrontiers in Plant Science\u003c\/em\u003e). Young tissue therefore depends on a fresh supply carried up in the xylem with the transpiration stream, and young tissue does not transpire much, so the supply is thin. A germinating seed is nearly all young tissue, which is why this feed puts calcium on the seed coat and in the top layer of compost, where the first root tips grow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eHumic substances increase root growth\u003c\/h4\u003e\n\u003cp\u003eA meta-analysis of published trials (Rose et al., 2014, \u003cem\u003eAdvances in Agronomy\u003c\/em\u003e) put the average response to humic substances at +22% shoot dry weight and +21% root dry weight, with wide variation by source and rate. Nardi and colleagues (2002, \u003cem\u003eSoil Biology and Biochemistry\u003c\/em\u003e) reviewed evidence that the low molecular size fraction stimulates the plasma membrane H⁺-ATPase and has auxin-like activity, and noted that the increase in root growth is generally more apparent than that of the shoot. Jindo et al. (2012, \u003cem\u003ePlant and Soil\u003c\/em\u003e) found the same root and proton pump response in four-day-old maize seedlings. Canellas et al. (2015, \u003cem\u003eScientia Horticulturae\u003c\/em\u003e) tie the bioactivity specifically to lateral root promotion and nutrient uptake.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eZinc-deficient shoots run short of auxin\u003c\/h4\u003e\n\u003cp\u003eIn zinc-deficient bean, indole-3-acetic acid in the shoot tips and young leaves fell to about half the level in zinc-sufficient plants, and shoot growth was severely depressed; resupplying zinc restored both within 96 hours (Cakmak, Marschner and Bangerth, 1989, \u003cem\u003eJournal of Experimental Botany\u003c\/em\u003e). Zinc is a component of thousands of plant proteins and zinc-limited crop growth is widespread (Broadley et al., 2007, \u003cem\u003eNew Phytologist\u003c\/em\u003e). Zinc also locks up in alkaline and high-phosphate soils, which is the reason for the fulvic acid alongside it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003eMolybdenum: a shortfall that can pass for nitrogen deficiency\u003c\/h4\u003e\n\u003cp\u003eMolybdenum is a cofactor of nitrate reductase, the enzyme that turns absorbed nitrate into something the plant can build protein from. Kaiser and colleagues (2005, \u003cem\u003eAnnals of Botany\u003c\/em\u003e) describe its importance as disproportionate to the tiny amounts required, and note that the deficiency is often misdiagnosed and put down to its downstream effects, nitrogen metabolism among them. A seedling short of molybdenum can look short of nitrogen, and extra nitrate will not help while the enzyme lacks its cofactor.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eFarooq, M., Wahid, A. \u0026amp; Siddique, K.H.M. (2012). Micronutrient application through seed treatments: a review. \u003cem\u003eJournal of Soil Science and Plant Nutrition\u003c\/em\u003e, 12(1), 125–142.\u003c\/li\u003e\n\u003cli\u003ePaparella, S., Araújo, S.S., Rossi, G., Wijayasinghe, M., Carbonera, D. \u0026amp; Balestrazzi, A. (2015). Seed priming: state of the art and new perspectives. \u003cem\u003ePlant Cell Reports\u003c\/em\u003e, 34(8), 1281–1293.\u003c\/li\u003e\n\u003cli\u003eThor, K. (2019). Calcium—nutrient and messenger. \u003cem\u003eFrontiers in Plant Science\u003c\/em\u003e, 10, 440.\u003c\/li\u003e\n\u003cli\u003eRose, M.T., Patti, A.F., Little, K.R., Brown, A.L., Jackson, W.R. \u0026amp; Cavagnaro, T.R. (2014). A meta-analysis and review of plant-growth response to humic substances: practical implications for agriculture. \u003cem\u003eAdvances in Agronomy\u003c\/em\u003e, 124, 37–89.\u003c\/li\u003e\n\u003cli\u003eNardi, S., Pizzeghello, D., Muscolo, A. \u0026amp; Vianello, A. (2002). Physiological effects of humic substances on higher plants. \u003cem\u003eSoil Biology and Biochemistry\u003c\/em\u003e, 34(11), 1527–1536.\u003c\/li\u003e\n\u003cli\u003eJindo, K., Martim, S.A., Navarro, E.C., Pérez-Alfocea, F., Hernandez, T., Garcia, C., Aguiar, N.O. \u0026amp; Canellas, L.P. (2012). Root growth promotion by humic acids from composted and non-composted urban organic wastes. \u003cem\u003ePlant and Soil\u003c\/em\u003e, 353(1–2), 209–220.\u003c\/li\u003e\n\u003cli\u003eCanellas, L.P., Olivares, F.L., Aguiar, N.O., Jones, D.L., Nebbioso, A., Mazzei, P. \u0026amp; Piccolo, A. (2015). Humic and fulvic acids as biostimulants in horticulture. \u003cem\u003eScientia Horticulturae\u003c\/em\u003e, 196, 15–27.\u003c\/li\u003e\n\u003cli\u003eCakmak, I., Marschner, H. \u0026amp; Bangerth, F. (1989). Effect of zinc nutritional status on growth, protein metabolism and levels of indole-3-acetic acid and other phytohormones in bean (\u003cem\u003ePhaseolus vulgaris\u003c\/em\u003e L.). \u003cem\u003eJournal of Experimental Botany\u003c\/em\u003e, 40(3), 405–412.\u003c\/li\u003e\n\u003cli\u003eBroadley, M.R., White, P.J., Hammond, J.P., Zelko, I. \u0026amp; Lux, A. (2007). Zinc in plants. \u003cem\u003eNew Phytologist\u003c\/em\u003e, 173(4), 677–702.\u003c\/li\u003e\n\u003cli\u003eKaiser, B.N., Gridley, K.L., Ngaire Brady, J., Phillips, T. \u0026amp; Tyerman, S.D. (2005). The role of molybdenum in agricultural plant production. \u003cem\u003eAnnals of Botany\u003c\/em\u003e, 96(5), 745–754.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"margin-top: 0.6em;\"\u003eFigures describe the published literature on seed treatments and humic substances at the rates used in those trials. They are not product-specific guarantees.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-sd-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use liquid seedling fertiliser: seed soak, seedling dip and root drench\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eShake well before every use\u003c\/span\u003e\n\u003cp\u003eThis is a concentrated liquid with suspended mineral particles. Shake vigorously for 15–20 seconds before measuring. When diluting, add the fertiliser to a small amount of warm water (20–30°C) and stir for at least 30 seconds before topping up to the full volume. This ensures thorough mixing and uniform application.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWhen to use this product\u003c\/span\u003e\n\u003cp\u003eThis is a \u003cstrong\u003estarter fertiliser\u003c\/strong\u003e, designed for the first 2–4 weeks of a plant's life. It is not a replacement for ongoing feeding. Once seedlings are established and growing strongly, transition to a Dr Forest crop-specific fertiliser (\u003ca href=\"\/products\/organic-tomato-fertiliser\"\u003eTomato\u003c\/a\u003e, \u003ca href=\"\/products\/organic-rose-fertiliser\"\u003eRose \u0026amp; Flower\u003c\/a\u003e, \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e, etc.) for the vegetative and fruiting phases.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication methods\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSeed soak — before sowing\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 3–3.5 ml per litre of water  |  \u003cstrong\u003eDuration:\u003c\/strong\u003e Soak seeds for 6–12 hours before planting\u003c\/div\u003e\n\u003cp\u003eSubmerge seeds in the diluted solution and leave for 6–12 hours. Drain and sow immediately — do not rinse. The humic and fulvic acids accelerate water imbibition through the seed coat while calcium and micronutrients are absorbed directly. Expect faster and more uniform emergence compared to untreated seed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSeedling dip — at transplanting\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 10 ml per litre of water (1:100 dilution)  |  \u003cstrong\u003eMethod:\u003c\/strong\u003e Dip roots before planting\u003c\/div\u003e\n\u003cp\u003ePrepare the solution and dip seedling roots for 10–30 seconds before transplanting into the final position. This coats the root system with a nutrient-rich biostimulant film that promotes rapid re-establishment, reduces transplant shock, and feeds the root zone biology in the critical first days after planting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRoot drench — after planting\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 3–3.5 ml per litre of water  |  \u003cstrong\u003eApplication:\u003c\/strong\u003e 1 litre of diluted solution per m²\u003c\/div\u003e\n\u003cp\u003eApply immediately after sowing or transplanting. Pour the diluted solution directly over the planted area at a rate of 1 litre per square metre. This delivers calcium and micronutrients to the root zone where the emerging root tips will access them first. Follow with normal watering to settle the soil around seeds or transplants.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eStep-by-step for seed soaking\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eShake the bottle vigorously.\u003c\/strong\u003e The suspension settles during storage — shake for 15–20 seconds before measuring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure 3–3.5 ml per litre of water.\u003c\/strong\u003e For a standard bowl or tray, 1 litre of solution is usually sufficient for a batch of seeds. Use warm water (20–30°C) for mixing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdd seeds and soak for 6–12 hours.\u003c\/strong\u003e Small seeds (lettuce, brassicas) need 6 hours. Larger seeds (peas, beans, sweetcorn) benefit from 10–12 hours. Do not exceed 12 hours.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrain and sow immediately.\u003c\/strong\u003e Do not rinse the seeds — the nutrient residue on the seed coat continues to feed the emerging root. Sow into moist compost or soil as normal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptional: apply a root drench after sowing.\u003c\/strong\u003e Use the same dilution rate (3–3.5 ml\/L) to water the tray or bed after sowing for maximum early nutrition.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eA 500 ml bottle at 3 to 3.5 ml per litre makes about 143 to 167 litres of solution; the 1 litre bottle makes twice that. The method for applying fulvic acid as a seed soak on its own is covered in \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-apply-fulvic-acid\"\u003eHow to apply fulvic acid: rates and method\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003eFollow up with \u003ca href=\"\/products\/organic-seaweed-powder-concentrated-100-soluble-fertiliser-dr\"\u003eSeaweed Powder\u003c\/a\u003e as a fortnightly biostimulant drench once seedlings are established. Use \u003ca href=\"\/products\/organic-amino-chelated-calcium\"\u003eAmino Chelated Calcium\u003c\/a\u003e for ongoing foliar calcium during fruiting. For soil-applied baseline nutrition, incorporate \u003ca href=\"\/products\/polyhalite\"\u003eYorkshire Polyhalite\u003c\/a\u003e or Dr Forest crop-specific blends into the compost or soil before planting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage\u003c\/span\u003e\n\u003cp\u003eStore upright in a cool, dry place between 5–25°C, out of direct sunlight. Keep sealed. Shake vigorously before each use — the suspension settles during storage. Do not store diluted solution — mix fresh for each application. Keep out of reach of children.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 4 — FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-sd-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions about fertiliser for seedlings\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq1\"\u003eWhat liquid fertiliser should I use for seedlings?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eA low-nitrogen feed that carries calcium, used dilute enough to touch seed and bare roots without harm. This one is built for that job: 4.13% calcium, iron, zinc, manganese and molybdenum, plus humic and fulvic acids, used at 3 to 3.5 ml per litre for soaking and drenching. A general-purpose liquid watered down to a seed-safe strength leaves its trace elements at background levels and still pushes leaf growth ahead of root growth.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq2\"\u003eWhen should I start feeding seedlings?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAt sowing. Soak the seed for 6 to 12 hours before it goes in, drench the tray at 3 to 3.5 ml per litre straight after sowing, or do both. The product is designed for the first 2 to 4 weeks; once the seedlings are established and growing strongly, move on to a Dr Forest crop-specific fertiliser for the rest of the season.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq3\"\u003eWill this fertiliser burn seeds or seedlings?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNo. At the recommended dilution rates, this formulation is specifically designed to be safe for direct seed contact and young seedlings. The nutrient concentrations are set for the tiny quantities a germinating seed needs, well below the feeding levels used for established plants. Do not exceed the stated rates.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq4\"\u003eHow long should I soak seeds?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eSmall seeds (lettuce, brassicas, herbs): 6 hours. Medium seeds (tomatoes, peppers, flowers): 6–8 hours. Large seeds (peas, beans, sweetcorn, squash): 10–12 hours. Do not exceed 12 hours — prolonged soaking can reduce oxygen availability and impair germination. Drain and sow straight away; do not rinse.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq5\"\u003eWhich seeds benefit most from soaking?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThe greatest improvements are typically seen in larger seeds with hard coats (peas, beans, sweetcorn, squash) and in crops that are sensitive to micronutrient shortfall from the start (brassicas, tomatoes, peppers, lettuce). Seed soaking is also particularly useful when sowing into cold or marginal conditions where germination is naturally slower.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq6\"\u003eWhy are my seedlings turning yellow, and will this fix it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eCommon causes are overwatering, cold compost, and the seed's own nitrogen running out before the roots can find more. This feed supplies iron, magnesium, manganese and molybdenum, which covers yellowing from a shortage of any of those, and a molybdenum shortfall in particular can look like a lack of nitrogen. It will not fix a waterlogged tray, and it is too low in nitrogen to fix a nitrogen shortage. For the tomato-specific version of the question, see \u003ca href=\"\/blogs\/the-dr-forest-blog\/why-are-my-tomato-leaves-turning-yellow\"\u003eWhy are my tomato leaves turning yellow?\u003c\/a\u003e.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq7\"\u003eCan I use this as a general-purpose fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNo. It is a starter fertiliser for the germination and establishment phase, so the nutrient profile leans on calcium and micronutrients, with little of the N-P-K that sustained vegetative growth and fruiting need. Once seedlings are established, move on to a Dr Forest crop-specific fertiliser for the rest of the season.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq8\"\u003eWhat is the difference between this and Cal-Mag or Amino Chelated Calcium?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAll three carry calcium. This one is the seedling-stage product: it adds humic and fulvic acids and four trace elements, and is used at sowing and planting out. \u003ca href=\"\/products\/powdered-cal-mag-supplement-boron-fulvic-acid-dr-forest\"\u003eCal-Mag\u003c\/a\u003e is a pH-neutral calcium and magnesium powder for established plants through the season. \u003ca href=\"\/products\/organic-amino-chelated-calcium\"\u003eAmino Chelated Calcium\u003c\/a\u003e is a soluble foliar calcium for fruiting crops.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq9\"\u003eIs it safe for pets and children?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThis product is non-toxic when used as directed. Avoid contact with eyes and skin, and wash hands after handling. Keep out of reach of children. Once diluted and applied, the area is safe for normal garden use.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-sd-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-sd-faq10\"\u003eIs it organic, and is the bottle recyclable?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is made with organic ingredients; it is not certified. It is supplied in a recycled plastic bottle, and the bottle is recyclable. Made by hand in small batches in Stockport, Greater Manchester.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-sd-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-sd-faq-paa1\" class=\"drf-faq-q\"\u003eHow do I use it at each stage?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eBefore sowing, soak the seed at 3 to 3.5 ml per litre. Straight after sowing, drench the tray at the same rate. When you pot on or plant out, dip the roots at 10 ml per litre. It's low in nitrogen on purpose, because young plants need roots before leaves.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ===== END 4-TAB BODY ===== --\u003e\n","brand":"Dr Forest","offers":[{"title":"1 litre","offer_id":55997673570678,"sku":"DF-SEEDLING-1L","price":20.99,"currency_code":"GBP","in_stock":true},{"title":"500ml","offer_id":55997673603446,"sku":"DF-SEEDLING-500ML","price":12.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/liquid-seed-seedling-fertiliser-root-stimulator-macro-micro-214.webp?v=1786553587"},{"product_id":"organic-potato-fertiliser","title":"Potato Fertiliser | Organic 3-5-8","description":"\u003c!-- Dr Forest — Potato Fertiliser 3-5-8 Product Page (crop v2 — Design System v1.0) --\u003e\n\u003c!-- Prefix: pt · 6-tab layout (Overview \/ Ingredients \/ How to Use \/ Growing Guide \/ The Science \/ FAQ) --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; font-weight: 600; font-size: 0.85em; letter-spacing: 0.2em; text-transform: uppercase; color: var(--drf-muted); margin: 1.2em 0 0.3em; }\n  .drf-wrap p { margin-bottom: 0.9em; }\n  .drf-wrap ul { padding-left: 1.2em; margin-bottom: 0.9em; }\n  .drf-wrap ul li { margin-bottom: 0.35em; }\n  .drf-wrap strong { font-weight: 500; color: var(--drf-grn); }\n  .drf-wrap em { font-style: italic; color: var(--drf-muted); }\n  .drf-wrap a { color: var(--drf-grn); text-decoration: underline; text-underline-offset: 2px; }\n  .drf-eyebrow { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--drf-gold); display: block; margin-bottom: 0.4em; }\n\n  \/* ── BADGES (hardcoded hex for legacy compatibility) ── *\/\n  .drf-badge-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 7px; margin: 0 0 12px; }\n  .drf-badge { padding: 9px 12px; font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; display: flex; align-items: center; justify-content: center; text-align: center; min-height: 36px; line-height: 1.3; }\n  .drf-badge-green { background: #eaf4ea; color: #2d6a2d; border: 1px solid #c0d8b0; }\n  .drf-badge-gold  { background: #fdf6e3; color: #8b6914; border: 1px solid #e0cc80; }\n  .drf-badge-dark  { background: var(--drf-grn-dark); color: #d4e4c8; border: 1px solid #2d6a2d; }\n\n  \/* ── STATS (white cards, gold top border on the grid, grid-line trick) ── *\/\n  .drf-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--drf-border); border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); margin: 1.2em 0; max-width: 100%; }\n  .drf-stat { background: var(--drf-white); padding: 0.7em 0.5em; text-align: center; }\n  .drf-stat-number { font-family: 'Cormorant Garamond', serif; font-size: 1.45em; font-weight: 400; color: var(--drf-grn); line-height: 1.1; display: block; }\n  .drf-stat-label { font-size: 0.62em; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--drf-gold); display: block; margin-top: 0.3em; }\n\n  \/* ── TABS (6-tab: 0.65em, 0.3em side padding, 0.03em tracking — prevents overflow on mobile) ── *\/\n  .drf-tabs-wrap { max-width: 100%; overflow: hidden; }\n  .drf-tabs-wrap input[type=\"radio\"] { display: none; }\n  .drf-tab-labels { display: flex; align-items: stretch; border-bottom: 2px solid var(--drf-border); margin-bottom: 1.2em; }\n  .drf-tab-labels label { flex: 1 1 0; padding: 0.75em 0.3em; font-size: 0.65em; font-weight: 600; letter-spacing: 0.03em; text-transform: uppercase; color: #8b6914; background: var(--drf-gold-light); cursor: pointer; text-align: center; display: flex; align-items: center; justify-content: center; border-bottom: 3px solid var(--drf-gold); margin-bottom: -2px; transition: all 0.15s; }\n  .drf-tab-labels label:hover { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); }\n  \/* 6-tab mobile: wrap the bar into two rows of three so every pill stays on one line (\"Growing Guide\" is the test case) *\/\n  @media (max-width: 480px) {\n    .drf-tab-labels { flex-wrap: wrap; }\n    .drf-tab-labels label { flex: 1 1 33.333%; white-space: nowrap; }\n  }\n  .drf-panel { display: none; }\n  #drf-pt-tab1:checked ~ .drf-tab-labels label[for=\"drf-pt-tab1\"],\n  #drf-pt-tab2:checked ~ .drf-tab-labels label[for=\"drf-pt-tab2\"],\n  #drf-pt-tab3:checked ~ .drf-tab-labels label[for=\"drf-pt-tab3\"],\n  #drf-pt-tab4:checked ~ .drf-tab-labels label[for=\"drf-pt-tab4\"],\n  #drf-pt-tab5:checked ~ .drf-tab-labels label[for=\"drf-pt-tab5\"],\n  #drf-pt-tab6:checked ~ .drf-tab-labels label[for=\"drf-pt-tab6\"] { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 700; }\n  #drf-pt-tab1:checked ~ .drf-panels #drf-pt-panel1,\n  #drf-pt-tab2:checked ~ .drf-panels #drf-pt-panel2,\n  #drf-pt-tab3:checked ~ .drf-panels #drf-pt-panel3,\n  #drf-pt-tab4:checked ~ .drf-panels #drf-pt-panel4,\n  #drf-pt-tab5:checked ~ .drf-panels #drf-pt-panel5,\n  #drf-pt-tab6:checked ~ .drf-panels #drf-pt-panel6 { display: block; }\n\n  \/* ── CALLOUTS (square; light \/ gold \/ dark) ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); color: var(--drf-cream); border-left-color: var(--drf-gold); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout-dark a { color: var(--drf-cream); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n\n  \/* ── PULL QUOTE ── *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: 1.4em; color: var(--drf-grn); text-align: center; padding: 1.4em 1em; margin: 1.8em auto; max-width: 80%; line-height: 1.5; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); }\n\n  \/* ── INGREDIENT CARDS ── *\/\n  .drf-ing { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-white); }\n  .drf-ing-head { display: flex; align-items: baseline; justify-content: space-between; }\n  .drf-ing-num { font-family: 'Cormorant Garamond', serif; font-size: 1.6em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-ing-pct { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--drf-gold); }\n  .drf-ing h4 { margin: 0.2em 0 0.3em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-ing p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── MECHANISM CARDS ── *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); font-weight: 600; }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate p:last-child { margin-bottom: 0; }\n  .drf-rate ul { font-size: 0.92em; color: var(--drf-muted); margin: 0.4em 0 0; }\n  .drf-rate ul li { margin-bottom: 0.25em; }\n\n  \/* ── STEPS (square block numbers) ── *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.9em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST (1px hairline borders, alternating gold \/ green) ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* ── COMPARISON BOXES (stack vertically) ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-pt-tabset\" id=\"drf-pt-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-pt-tabset\" id=\"drf-pt-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-pt-tabset\" id=\"drf-pt-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-pt-tabset\" id=\"drf-pt-tab4\"\u003e \u003cinput type=\"radio\" name=\"drf-pt-tabset\" id=\"drf-pt-tab5\"\u003e \u003cinput type=\"radio\" name=\"drf-pt-tabset\" id=\"drf-pt-tab6\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-pt-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-pt-tab2\"\u003eIngredients\u003c\/label\u003e \u003clabel for=\"drf-pt-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-pt-tab4\"\u003eGrowing Guide\u003c\/label\u003e \u003clabel for=\"drf-pt-tab5\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-pt-tab6\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\n\u003c!-- ═══════════ TAB 1 — OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-pt-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eOrganic potato fertiliser 3-5-8 — 20 ingredients, potash-led for starch and flavour\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003e3-5-8 NPK\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e20 Ingredients\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eSulphate-Form Potash\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSlow Release\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eFull Ingredient Transparency\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003eHandcrafted in Stockport\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eDr Forest Potato Fertiliser is a 3-5-8 organic potato fertiliser: a slow-release, high-potash powder for earlies and maincrops in beds, grow bags and pots.\u003c\/strong\u003e Potassium helps the tuber turn sugar into starch, so the formula leans on K and keeps nitrogen moderate. It is blended in small batches in Stockport from 20 ingredients, each one listed on the Ingredients tab.\u003c\/p\u003e\n\u003cp\u003eThe main potash sources are sulphate of potash and Yorkshire polyhalite, with no muriate of potash (potassium chloride), which trials link to lower starch. Alongside it sit 7% calcium, 2.4% magnesium, plant meals, Scottish seaweed, British biochar and a living microbial culture. It goes in at planting and at earthing up, then every 3–4 weeks while the tubers bulk.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e3-5-8\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNPK ratio\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e7%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eCalcium\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e2.4%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eMagnesium\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e2.7:1\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eK : N ratio\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat this formula does for your potatoes\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eStarch and dry matter\u003c\/strong\u003e — 8% potash, mostly in sulphate form. Potassium switches on starch synthase, the enzyme that builds starch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTuber set\u003c\/strong\u003e — 5% phosphate, mainly from a quick source and a slow one, for the weeks when tubers are forming.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeaf kept in proportion\u003c\/strong\u003e — 3% nitrogen, mostly from plant proteins and meals, so the plant doesn't run to haulm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium in the ridge\u003c\/strong\u003e — 7% calcium, mainly from four ingredients, in the soil right around the tubers, where they take it up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSugar to the tubers\u003c\/strong\u003e — 2.4% magnesium, mainly from three sources; without enough, sugar stays stuck in the leaves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSoil that keeps working\u003c\/strong\u003e — seaweed, biochar, clay minerals, humic acid and a microbial culture add what a soluble feed doesn't.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDr Forest potato fertiliser vs a liquid potato feed\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eDr Forest Potato Fertiliser 3-5-8 — slow-release powder\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e20 ingredients, with 7% calcium, 2.4% magnesium and trace minerals\u003c\/li\u003e\n\u003cli\u003eMineral potash from sulphate of potash and polyhalite, no muriate\u003c\/li\u003e\n\u003cli\u003eApplied at planting and earthing up, then every 3–4 weeks through bulking\u003c\/li\u003e\n\u003cli\u003ePlant meals and seaweed add organic matter as they break down; the biochar lasts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eTypical liquid potato feed — diluted concentrate\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNPK, often with little or no calcium or magnesium on the label\u003c\/li\u003e\n\u003cli\u003ePotash source varies, so check the label for potassium chloride\u003c\/li\u003e\n\u003cli\u003eUsually mixed and watered on every week or two\u003c\/li\u003e\n\u003cli\u003eFeeds the plant but adds little or nothing to the soil\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eHandcrafted in Stockport\u003c\/span\u003e\n\u003cp\u003eDr Forest was founded in 2020 in Stockport, Greater Manchester, and is named after Joe's grandfather, Dr Forrest, a GP in a Lancashire mining town near Preston who kept a back-garden plot for the runner beans he turned into piccalilli for family and friends. This \u003ca href=\"\/collections\/organic-fertilisers\"\u003epremium organic plant food\u003c\/a\u003e comes in compostable kraft packs. More on the potash in \u003ca href=\"\/blogs\/the-dr-forest-blog\/polyhalite-vs-sulphate-of-potash-which-to-use\"\u003epolyhalite vs sulphate of potash\u003c\/a\u003e. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 2 — INGREDIENTS ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-pt-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eWhat's Inside\u003c\/span\u003e\n\u003ch2\u003eAll 20 ingredients — what each one does for potatoes\u003c\/h2\u003e\n\u003cp\u003eTwenty ingredients, each with a job. The polyhalite is mined in North Yorkshire, the seaweed meal hand-harvested in Scotland, and the biochar, rapeseed meal and clay minerals are British. Each card shows how quickly it releases.\u003c\/p\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e01\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSteady release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eNitrogen plant extract — plant protein concentrate\u003c\/h4\u003e\n\u003cp\u003eThe main nitrogen carrier, at 12% N. Soil microbes break the protein down over the weeks after planting, so nitrogen arrives steadily. A surge while tubers are forming pushes growth into the haulm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e02\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eFast–moderate release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003ePhosphorous meal — calcined plant meal\u003c\/h4\u003e\n\u003cp\u003eA heat-processed plant meal with about 15% P₂O₅ and 9% CaO, and not a rock phosphate. The quicker of the two phosphate sources, there for stolon growth and tuber set after emergence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e03\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eImmediate release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eSulphate of potash — mineral, low chloride\u003c\/h4\u003e\n\u003cp\u003e50% K₂O in sulphate form, dissolving straight away to give the young crop its first potash. Also sold on its own as \u003ca href=\"\/products\/sulphate-of-potash\"\u003eSulphate of Potash\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e04\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eImmediate release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eGypsum (calcium sulphate) — mineral\u003c\/h4\u003e\n\u003cp\u003e23% calcium and 18.6% sulphur, both available at once. A neutral salt, so it adds calcium without raising soil pH.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e05\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSustained release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eMicronised magnesium mineral — milled to about 5 microns\u003c\/h4\u003e\n\u003cp\u003e20.9% Mg, milled fine to weather readily. Magnesium sits at the centre of every chlorophyll molecule and helps move sugar from leaf to tuber.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e06\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eYorkshire polyhalite — North Yorkshire, mined mineral\u003c\/h4\u003e\n\u003cp\u003eOne crystal carrying 14% K₂O, 17% CaO, 6% MgO and sulphate, mined more than a kilometre down in workings that run out under the North Sea. It releases more slowly than sulphate of potash, so supply carries on after the fast sources are spent. More on \u003ca href=\"\/products\/polyhalite\"\u003ewhat polyhalite is\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e07\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eAlfalfa meal — plant meal\u003c\/h4\u003e\n\u003cp\u003eDried, milled lucerne: gentle nitrogen and organic matter that soil life works through over the season.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e08\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow reserve\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eMicronised rock phosphate — mined mineral\u003c\/h4\u003e\n\u003cp\u003e31% P₂O₅ and 49% CaO. It dissolves slowly, so it is the phosphate still on hand when maincrops are bulking in August.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e09\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eModerate release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eMagnesium carbonate — mineral\u003c\/h4\u003e\n\u003cp\u003e20% Mg and the quickest of the three magnesium sources. It dissolves within weeks in moist soil and covers the early season while the other two build.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e10\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eScottish seaweed meal — hand-harvested\u003c\/h4\u003e\n\u003cp\u003eMore than 60 trace elements, plus alginates that help the ridge hold its structure and moisture.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e11\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eRapeseed meal — British\u003c\/h4\u003e\n\u003cp\u003eThe pressed meal left after oil extraction. Microbes release its nitrogen gradually and use it as a carbon source.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e12\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow release\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eMealworm frass — from farmed mealworms\u003c\/h4\u003e\n\u003cp\u003eModest nitrogen and potash, plus chitin from shed skins, which feeds the soil microbes that break it down.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e13\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eChelation\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eHumic and fulvic acid\u003c\/h4\u003e\n\u003cp\u003eHumic substances hold micronutrients in forms roots can use, and reviews link them to more lateral root growth and better nutrient uptake. Fulvic acid is the smaller, more soluble fraction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e14\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003ePermanent\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eFermented biochar — British\u003c\/h4\u003e\n\u003cp\u003eCharcoal made for soil, fermented before blending. Its porous structure lasts, and in a 45-week study of manure-amended soil the highest biochar rate cut nitrogen leaching by 11% and dissolved phosphorus by 69% (Laird et al., 2010).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e15\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003ePermanent reservoir\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eClay minerals — British montmorillonite and illite\u003c\/h4\u003e\n\u003cp\u003eClay surfaces hold potassium, calcium and magnesium and release them gradually, most usefully on light, sandy soils.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e16\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eBiostimulant\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eSeaweed extracts — British coastal\u003c\/h4\u003e\n\u003cp\u003eThe soluble fraction of seaweed, carrying cytokinins, auxins and betaines, though how they work in the field is still being pinned down.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e17\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eSlow weathering\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eVolcanic rock dust — ground basalt\u003c\/h4\u003e\n\u003cp\u003eWeathers slowly, releasing iron, zinc, copper, manganese and silicon over years.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e18\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eLiving culture\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eEM-1 microorganisms\u003c\/h4\u003e\n\u003cp\u003eA mixed culture of bacteria and yeasts, lactic acid bacteria among them, that gets the meals and minerals breaking down in the soil. Also sold as \u003ca href=\"\/products\/effective-microorganisms-em1\"\u003eEM-1 Effective Microorganisms\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e19\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003eStructural\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eSilica meal — mineral\u003c\/h4\u003e\n\u003cp\u003eA source of silicon, which plants lay down in their cell walls, where it stiffens the tissue.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-ing\"\u003e\n\u003cdiv class=\"drf-ing-head\"\u003e\n\u003cspan class=\"drf-ing-num\"\u003e20\u003c\/span\u003e\u003cspan class=\"drf-ing-pct\"\u003ePlant-derived\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch4\u003eHerbal mixture — comfrey, nettle, yarrow and chamomile\u003c\/h4\u003e\n\u003cp\u003eComfrey is the gardener's traditional potash plant, nettle brings iron and silica, and yarrow and chamomile are the classic compost herbs. Count it as a biological extra; it adds little in the way of nutrients.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 3 — HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-pt-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use potato fertiliser: rates, timing and method\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eBefore you start\u003c\/span\u003e\n\u003cp\u003eThis product is a milled powder with a bulk density of 1 g\/ml, so grams and millilitres are interchangeable. Never apply it in direct contact with seed tubers: always mix it into the surrounding soil with a 10 cm gap. Water thoroughly after application. For best results, mix 1:1 with compost before applying.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eStep-by-step: containers and grow bags\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrepare your compost.\u003c\/strong\u003e 5–7.5g per litre, mixed thoroughly: 5g\/L for enriched compost, 7.5g\/L for plain or peat-free mixes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFill and plant.\u003c\/strong\u003e Fill to half depth with the prepared compost. Set the seed tuber eyes upward and cover with 10–15cm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEarth up as shoots emerge.\u003c\/strong\u003e When shoots are 10–15cm tall, add compost, leaving 5cm exposed. Add 1.5–2.5g per litre of added compost.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinue until full.\u003c\/strong\u003e Include the top-dress dose each time. Once the container is full, switch to surface top-dressing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSurface top-dress every 3–4 weeks.\u003c\/strong\u003e 1.5–2.5g per litre of container volume, 10cm from the stem. Scratch it in and water. Our guide on \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-top-dress\"\u003ehow to top dress\u003c\/a\u003e covers the technique.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonitor plant signals.\u003c\/strong\u003e Very dark haulm with few flowers: stretch to 5–6 weeks. Pale lower leaves from midsummer are normal remobilisation.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eApplication rates\u003c\/h3\u003e\n\u003ch4\u003eContainers, grow bags \u0026amp; pots\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSituation\u003c\/th\u003e\n\u003cth\u003eRate (g = ml)\u003c\/th\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePotting mix preparation\u003c\/td\u003e\n\u003ctd\u003e5–7.5g per litre\u003c\/td\u003e\n\u003ctd\u003eOnce at planting\u003c\/td\u003e\n\u003ctd\u003e5g\/L enriched mixes. 7.5g\/L plain or peat-free.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContainer top-dressing\u003c\/td\u003e\n\u003ctd\u003e1.5–2.5g per litre of pot volume\u003c\/td\u003e\n\u003ctd\u003eEvery 3–4 weeks\u003c\/td\u003e\n\u003ctd\u003e1.5g\/L earlies. 2–2.5g\/L maincrops.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eOutdoor beds, raised beds \u0026amp; allotments\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSituation\u003c\/th\u003e\n\u003cth\u003eRate (g = ml)\u003c\/th\u003e\n\u003cth\u003eFrequency\u003c\/th\u003e\n\u003cth\u003eNotes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInitial soil preparation\u003c\/td\u003e\n\u003ctd\u003e125–175g per m²\u003c\/td\u003e\n\u003ctd\u003eOnce before planting\u003c\/td\u003e\n\u003ctd\u003eFork into top 15–20cm. 175g\/m² for depleted beds.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutdoor top-dressing\u003c\/td\u003e\n\u003ctd\u003e100–150g per m²\u003c\/td\u003e\n\u003ctd\u003eEvery 3–4 weeks\u003c\/td\u003e\n\u003ctd\u003e100g\/m² earlies. 150g\/m² maincrops through bulking.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle plant at planting\u003c\/td\u003e\n\u003ctd\u003e30–45g per plant\u003c\/td\u003e\n\u003ctd\u003eOnce at planting\u003c\/td\u003e\n\u003ctd\u003eMix into planting hole. 10cm gap from tuber.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle plant top-dressing\u003c\/td\u003e\n\u003ctd\u003e20–35g per plant\u003c\/td\u003e\n\u003ctd\u003eEvery 3–4 weeks\u003c\/td\u003e\n\u003ctd\u003eRing 10–15cm from stem. Time with earthing up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eSeasonal feeding guide\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eStage\u003c\/th\u003e\n\u003cth\u003eTiming\u003c\/th\u003e\n\u003cth\u003eRate \u0026amp; frequency\u003c\/th\u003e\n\u003cth\u003eGoal\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBed \/ container prep\u003c\/td\u003e\n\u003ctd\u003e2–4 weeks before planting\u003c\/td\u003e\n\u003ctd\u003eBeds: 125–175g\/m². Pots: 5–7.5g\/L\u003c\/td\u003e\n\u003ctd\u003eBuild nutrient-rich root zone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAt planting\u003c\/td\u003e\n\u003ctd\u003eAt time of planting\u003c\/td\u003e\n\u003ctd\u003e30–45g per planting position\u003c\/td\u003e\n\u003ctd\u003eLocalised nutrition for emerging stolons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFirst earthing up\u003c\/td\u003e\n\u003ctd\u003e3–4 weeks after emergence\u003c\/td\u003e\n\u003ctd\u003eBeds: 100–150g\/m². Pots: 1.5–2.5g\/L\u003c\/td\u003e\n\u003ctd\u003eK and P into tuber initiation zone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eActive bulking\u003c\/td\u003e\n\u003ctd\u003e4–6 weeks after tuber initiation\u003c\/td\u003e\n\u003ctd\u003eSame, every 3–4 weeks\u003c\/td\u003e\n\u003ctd\u003eSustained K for starch accumulation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRipening \u0026amp; curing\u003c\/td\u003e\n\u003ctd\u003eHaulm yellowing\u003c\/td\u003e\n\u003ctd\u003eStop or single low-rate application\u003c\/td\u003e\n\u003ctd\u003eAllow skin set; excess N reduces storage life\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003eUse \u003ca href=\"\/products\/organic-seaweed-powder-concentrated-100-soluble-fertiliser-dr\"\u003eDr Forest Seaweed Powder\u003c\/a\u003e as a fortnightly foliar. Apply \u003ca href=\"\/products\/liquid-gypsum\"\u003eDr Forest Liquid Gypsum\u003c\/a\u003e as a root drench for additional calcium during tuber initiation. Use the \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eDr Forest All-Purpose 4-4-4\u003c\/a\u003e for companion plantings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage\u003c\/span\u003e\n\u003cp\u003eCool, dry place out of direct sunlight. Keep sealed. Effective for at least 18 months.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 4 — GROWING GUIDE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-pt-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eGrowing Guide\u003c\/span\u003e\n\u003ch2\u003ePotato growing guide — earlies, maincrops, chitting, earthing up and feeding by type\u003c\/h2\u003e\n\u003cp\u003ePotatoes are easy to grow and easy to grow badly. Most of the difference is timing: which type you plant, when, how evenly the ridge stays moist and when you stop feeding. Written for UK gardens and allotments.\u003c\/p\u003e\n\u003ch3\u003eFirst earlies, second earlies and maincrops\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eFirst earlies — new potatoes, the quickest crop\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePlant mid-March in mild areas, late March elsewhere; lift in June and July, about 10–12 weeks after planting\u003c\/li\u003e\n\u003cli\u003eRocket, Swift, Casablanca, Lady Christl, Pentland Javelin\u003c\/li\u003e\n\u003cli\u003e30cm apart in rows 60cm apart\u003c\/li\u003e\n\u003cli\u003eLower feeding rates, 1–2 top-dresses at most\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eSecond earlies — salad and summer potatoes\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePlant in April and lift in July and August, spaced as first earlies\u003c\/li\u003e\n\u003cli\u003eCharlotte, Anya, Nicola, Kestrel, International Kidney (Jersey Royal when grown on Jersey); lower to mid-range feeding, 1–2 top-dresses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eMaincrops — the potatoes you store\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePlant in April, or into early May; lift from late August to October\u003c\/li\u003e\n\u003cli\u003eFloury: King Edward, Maris Piper, Rooster, Kerr's Pink, Golden Wonder. All-rounders: Desiree, Cara, Sarpo Mira\u003c\/li\u003e\n\u003cli\u003e37cm apart in rows 75cm apart; floury types at the upper end of the range, all-rounders mid-range, 2–3 top-dresses through bulking\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eFeeding adjustments by variety type\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFirst earlies — Rocket, Swift, Casablanca, Lady Christl, Pentland Javelin\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Lower end of range  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 4 weeks  |  \u003cstrong\u003eTop-dresses:\u003c\/strong\u003e 1–2 max\u003c\/div\u003e\n\u003cp\u003eShort season (10–12 weeks). Full base dressing, then 1 top-dress at first earthing up; a second only if the season is long. Lifted before starch builds fully, they need less potash than maincrops.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSecond earlies \u0026amp; salad — Charlotte, Anya, Nicola, Kestrel, International Kidney (Jersey Royal)\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Lower to mid-range  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 3–4 weeks  |  \u003cstrong\u003eTop-dresses:\u003c\/strong\u003e 1–2\u003c\/div\u003e\n\u003cp\u003eWaxy varieties bred for firm texture. Moderate feeding keeps the waxy character. Harvest when the haulm just begins to yellow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFloury maincrops — King Edward, Maris Piper, Rooster, Kerr's Pink, Golden Wonder\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Upper end of range  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 3 weeks at peak  |  \u003cstrong\u003eTop-dresses:\u003c\/strong\u003e 2–3\u003c\/div\u003e\n\u003cp\u003eWhat this formula was designed for. Floury varieties are bred for high starch but only get there with potassium supplied steadily through a long bulking period. Full programme, upper rates.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eAll-rounders — Desiree, Cara, Sarpo Mira, Wilja, Estima\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Mid-range  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 3–4 weeks  |  \u003cstrong\u003eTop-dresses:\u003c\/strong\u003e 2–3\u003c\/div\u003e\n\u003cp\u003eVersatile varieties that respond well to standard rates. Wilja and Estima are second earlies, the rest maincrops. Sarpo Mira has exceptional blight resistance and benefits from the full maincrop programme.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eHeritage \u0026amp; specialist — Pink Fir Apple, Shetland Black, Highland Burgundy Red, Ratte, Salad Blue\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Mid-range  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 3–4 weeks  |  \u003cstrong\u003eTop-dresses:\u003c\/strong\u003e 2–3\u003c\/div\u003e\n\u003cp\u003eGrown for flavour and looks rather than weight of crop; Pink Fir Apple, for one, is a late maincrop. A bigger dose won't turn a light-cropping variety into a heavy one.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eChitting — do you need to?\u003c\/h3\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eOptional, but worth it for earlies\u003c\/span\u003e\n\u003cp\u003eChitting (pre-sprouting) gives first and second earlies a 2–3 week head start; it matters less for maincrops. Stand tubers upright in egg boxes in a cool (8–10°C), bright room from late January and plant when sprouts are 1.5–2.5cm long. A chitting tuber runs on its own starch and needs no fertiliser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eContainers and grow bags vs beds and allotments\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eContainers, grow bags and patio pots\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBest for first and second earlies\u003c\/li\u003e\n\u003cli\u003eEarth up by adding compost in layers; feed at every earthing up, then surface top-dress every 3–4 weeks\u003c\/li\u003e\n\u003cli\u003eWater daily in warm weather, and make sure the container drains freely\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eOutdoor beds, raised beds and allotments\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eEvery type, from first earlies to late maincrops\u003c\/li\u003e\n\u003cli\u003eEarth up by drawing soil from between the rows, and mulch after the final earthing up\u003c\/li\u003e\n\u003cli\u003eWater deeply 2–3 times a week in dry spells\u003c\/li\u003e\n\u003cli\u003eDon't grow potatoes or tomatoes in the same bed two years running\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eWatering while tubers form\u003c\/h3\u003e\n\u003cp\u003eA dry spell while tubers are forming leaves fewer of them; drought followed by a soaking gives cracked, knobbly or hollow ones. Tubers usually start forming around the time the first flower buds appear, and from then through bulking steady moisture counts most.\u003c\/p\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eContainers and grow bags\u003c\/h4\u003e\n\u003cp\u003eCheck daily from June; a full-grown plant can drink a bag dry on a warm afternoon. Water until it drains through, and after every top-dress.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eBeds and allotments\u003c\/h4\u003e\n\u003cp\u003eA good soak two or three times a week in dry weather beats a daily sprinkle that only wets the surface. Aim at the base of the ridge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eCalcium moves with water\u003c\/span\u003e\n\u003cp\u003eCalcium travels with water, and most of that goes to the leaves. Tubers take theirs from the soil right around them, through small roots on the stolons and tubers (Palta, 2010), so feed into the ridge and keep it moist.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eEarthing up — why and when\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeeps tubers dark.\u003c\/strong\u003e Tubers that see light turn green and build up bitter glycoalkaloids (solanine).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePuts the feed where the tubers are.\u003c\/strong\u003e Apply your top-dress dose just before or during earthing up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen to earth up.\u003c\/strong\u003e First time when shoots reach 15–20cm. Second time 2–3 weeks later, when the shoots re-emerge. Container growers add compost layers instead of drawing soil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCover against late frost.\u003c\/strong\u003e If frost is forecast in April or May, draw soil over emerging shoots or cover them overnight with hessian or straw.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eUK seasonal timeline\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMonth\u003c\/th\u003e\n\u003cth\u003eTask\u003c\/th\u003e\n\u003cth\u003eFeeding\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJan–Feb\u003c\/td\u003e\n\u003ctd\u003eOrder seed tubers. Chit earlies at 8–10°C, bright but out of direct sun.\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMarch\u003c\/td\u003e\n\u003ctd\u003ePrepare beds 2–4 weeks before planting. Plant first earlies mid-March in mild areas, late March elsewhere.\u003c\/td\u003e\n\u003ctd\u003eFork in 125–175g\/m² base dressing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApril\u003c\/td\u003e\n\u003ctd\u003ePlant second earlies and maincrops (maincrops until early May). Prepare containers.\u003c\/td\u003e\n\u003ctd\u003e30–45g per planting hole. Containers: 5–7.5g\/L charged compost\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMay\u003c\/td\u003e\n\u003ctd\u003eFirst earthing up when shoots reach 15–20cm. Keep the soil moist.\u003c\/td\u003e\n\u003ctd\u003eFirst top-dress (100–150g\/m²) during earthing up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJune\u003c\/td\u003e\n\u003ctd\u003eSecond earthing up. Lift earlies when the flowers open or the haulm begins to yellow.\u003c\/td\u003e\n\u003ctd\u003eContinue top-dressing every 3–4 weeks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJuly\u003c\/td\u003e\n\u003ctd\u003eLift first and second earlies. Watch the blight forecast in warm, humid weather.\u003c\/td\u003e\n\u003ctd\u003eMaincrops: upper end, every 3 weeks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAugust\u003c\/td\u003e\n\u003ctd\u003eReduce watering slightly in the last 2 weeks before lifting. Cut the haulm if blight appears.\u003c\/td\u003e\n\u003ctd\u003eFinal top-dress for maincrops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSep–Oct\u003c\/td\u003e\n\u003ctd\u003eLift maincrops on a dry day, leave on the soil 1–2 hours to dry, then store cool, dark and ventilated in hessian or paper sacks.\u003c\/td\u003e\n\u003ctd\u003eNone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eCommon problems\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLots of leaf, few tubers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e Too much nitrogen relative to potash, often on freshly manured ground\u003c\/div\u003e\n\u003cp\u003eVery dark, lush haulm with few flowers is the sign. Skip the next top-dress, reduce rates and stretch the interval to 5–6 weeks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eHollow heart\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e Fast, uneven growth from erratic watering or too much nitrogen; low tuber calcium is also linked\u003c\/div\u003e\n\u003cp\u003eWater and feed evenly through bulking. Big-tubered maincrops such as King Edward and Maris Piper suffer most; the cavity is harmless.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eGreen tubers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e Light reaching the tubers, in the ground or in store\u003c\/div\u003e\n\u003cp\u003eEarth up thoroughly, re-cover ridges after heavy rain and store the crop in the dark. Green potatoes should not be eaten.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eCommon scab\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e A soil bacterium (\u003cem\u003eStreptomyces scabies\u003c\/em\u003e) that marks young tuber skins when the soil is dry, worst on light, alkaline or recently limed ground\u003c\/div\u003e\n\u003cp\u003eKeep the ridge moist for the first few weeks after tubers form, don't lime ahead of potatoes and choose a scab-resistant variety if your ground is prone. If your pH runs high, see our guide to \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-increase-or-decrease-your-soil-ph\"\u003echanging soil pH\u003c\/a\u003e. The marks are skin-deep.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003ePotato blight\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eCause:\u003c\/strong\u003e \u003cem\u003ePhytophthora infestans\u003c\/em\u003e, a water mould carried on the wind in warm, humid spells, usually July–August\u003c\/div\u003e\n\u003cp\u003eNo fertiliser keeps blight away. Grow resistant varieties (Sarpo Mira, Sarpo Axona, Carolus) and follow the Hutton Criteria forecast. If blight appears, cut the haulm to ground level at once and don't compost it; tubers are usually fine if the haulm comes off promptly.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 5 — THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-pt-panel5\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eThe science of starch, flavour and the potato tuber — and why feeding matters\u003c\/h2\u003e\n\u003cp\u003eA tuber is a starch store the plant fills with sugar made in its leaves, and texture and flavour depend on how well that filling went. Flavour starts as precursors the plant builds, mainly sugars, amino acids, RNA and lipids, which cooking turns into the compounds you taste; variety, growing conditions and storage all shift them (Jansky, 2010).\u003c\/p\u003e\n\u003ch3\u003eWhy the 3-5-8 ratio works\u003c\/h3\u003e\n\u003cp\u003ePotatoes hold more potassium than any other major nutrient, about 1.7% of dry matter, and a 30 t\/ha crop removes around 250 kg of it per hectare (Torabian et al., 2021; Koch et al., 2020). A high nitrogen supply can delay or suppress tuber formation (Koch et al., 2020). Hence a K:N ratio of 2.7:1, with 5% phosphate for tuber set.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e3-5-8\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNPK ratio\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e1.7%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eK in tuber dry matter\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e250 kg\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eK per ha, 30 t crop\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e−2%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eStarch with muriate\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eFor starch, the rate potassium reaches the tuber matters more than the total it holds.\u003c\/div\u003e\n\u003ch3\u003eWhat makes a potato taste like a potato\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eCompound\u003c\/th\u003e\n\u003cth\u003eWhat it does\u003c\/th\u003e\n\u003cth\u003eFeeding link\u003c\/th\u003e\n\u003cth\u003eSource\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStarch and dry matter\u003c\/td\u003e\n\u003ctd\u003eFloury or waxy texture\u003c\/td\u003e\n\u003ctd\u003ePotassium activates starch synthase; potassium chloride gave about 2% less starch than sulphate\u003c\/td\u003e\n\u003ctd\u003eNitsos \u0026amp; Evans, 1969; Torabian et al., 2021; Naumann et al., 2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSugars\u003c\/td\u003e\n\u003ctd\u003eSweetness; browning when roasted or fried\u003c\/td\u003e\n\u003ctd\u003eExported from the leaves to the tuber, an export that magnesium shortage holds back\u003c\/td\u003e\n\u003ctd\u003eJansky, 2010; Hauer-Jákli \u0026amp; Tränkner, 2019\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlutamate and 5'-nucleotides\u003c\/td\u003e\n\u003ctd\u003eSavoury (umami) depth; tracked panel flavour-intensity scores (R² 0.83)\u003c\/td\u003e\n\u003ctd\u003eDiffered mainly by variety in this study, which did not test feeding\u003c\/td\u003e\n\u003ctd\u003eMorris et al., 2007\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuber calcium\u003c\/td\u003e\n\u003ctd\u003eCell-wall strength; low levels linked to hollow heart and internal brown spot\u003c\/td\u003e\n\u003ctd\u003eTaken up from the soil around the tuber\u003c\/td\u003e\n\u003ctd\u003ePalta, 2010; Naumann et al., 2020\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eWhy a slow-release, multi-input feed suits potatoes\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003ePotassium builds the starch, and timing matters\u003c\/h4\u003e\n\u003cp\u003eIn the classic study, adding potassium strongly raised starch synthase activity in potato and other crops, and the sweet corn enzyme could not work without it (Nitsos \u0026amp; Evans, 1969); potato reviews link potassium to higher starch (Torabian et al., 2021). In tubers, the rate of potassium arriving tracked starch production more closely than the total held (Lindhauer \u0026amp; De Fekete, 1990). Hence fast sulphate of potash, slower polyhalite and a top-dress every 3–4 weeks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eSulphate beats muriate for starch\u003c\/h4\u003e\n\u003cp\u003eIn a German trial reported by Naumann et al. (2020), potassium chloride cut starch by about 2% and starch yield by about a tonne per hectare compared with the sulphate form, and a second review found the sulphate better for dry matter and starch (Torabian et al., 2021).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eNitrogen in proportion\u003c\/h4\u003e\n\u003cp\u003eHigh nitrogen can delay tuberisation and favours stems over tubers (Koch et al., 2020). Too little is no answer either: a lower nitrogen supply can raise reducing sugars by 60–100% (Naumann et al., 2020), which matters if you roast or fry. So 3%, released gradually as the meals and minerals break down.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003ePhosphate for tuber set\u003c\/h4\u003e\n\u003cp\u003ePhosphorus has a significant effect on tuber setting, especially early in growth (Koch et al., 2020): calcined plant meal covers the first weeks, rock phosphate the late season.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eCalcium comes from the ridge\u003c\/h4\u003e\n\u003cp\u003eCalcium moves with water in the xylem and little of that water reaches the tubers, which rely on roots growing from the stolons and the tubers themselves. In-season calcium raised tuber calcium and lowered hollow heart, internal brown spot and bruising in Palta's work (Palta, 2010).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003eMagnesium moves the sugar\u003c\/h4\u003e\n\u003cp\u003eUnder magnesium shortage, sucrose transport from leaves to sink organs is inhibited and sugars pile up in the leaves (reviewed by Hauer-Jákli \u0026amp; Tränkner, 2019). In a potato the main sink is the tuber.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e07\u003c\/span\u003e\n\u003ch4\u003eOrganic matter feeds soil biology\u003c\/h4\u003e\n\u003cp\u003eAcross 56 studies, organic systems carried 32–84% more microbial biomass and activity than conventional ones (Lori et al., 2017). In a 45-week column study of manure-amended soil, biochar cut nitrogen leaching by 11% and dissolved phosphorus by 69% (Laird et al., 2010). Humic substances are linked to more lateral root growth (Canellas et al., 2015); seaweed carries growth-active compounds whose mode of action is still poorly understood (Khan et al., 2009).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWhat we don't claim\u003c\/span\u003e\n\u003cp\u003eAcross three field experiments, polyhalite improved potato skin appearance only moderately, and mainly when applied after the haulm had been desiccated; earlier applications did not change the peel's mineral make-up (Keren-Keiserman et al., 2019). So we don't promise better skins. Nor better taste from growing organically: over four years and eight varieties, organic tubers were lower in nitrate and higher in vitamin C, but glycoalkaloids ran higher in some and taste panels found no significant difference (Hajšlová et al., 2005).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eStudy data\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eStudy\u003c\/th\u003e\n\u003cth\u003eScope\u003c\/th\u003e\n\u003cth\u003eFinding\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNaumann et al. (2020)\u003c\/td\u003e\n\u003ctd\u003eReview; KCl data from one German trial (2003)\u003c\/td\u003e\n\u003ctd\u003ePotassium chloride: starch about 2% and starch yield about 1 t\/ha lower than sulphate\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePalta (2010)\u003c\/td\u003e\n\u003ctd\u003eReview of the author's calcium research\u003c\/td\u003e\n\u003ctd\u003eIn-season calcium: higher tuber calcium, less hollow heart and internal brown spot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHajšlová et al. (2005)\u003c\/td\u003e\n\u003ctd\u003eEight varieties, four harvests\u003c\/td\u003e\n\u003ctd\u003eOrganic: lower nitrate, more vitamin C; no significant taste difference\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eTorabian, S., Farhangi-Abriz, S., Qin, R. et al. (2021). Potassium: a vital macronutrient in potato production — a review. \u003cem\u003eAgronomy\u003c\/em\u003e, 11(3), 543.\u003c\/li\u003e\n\u003cli\u003eKoch, M., Naumann, M., Pawelzik, E. et al. (2020). The importance of nutrient management for potato production Part I: plant nutrition and yield. \u003cem\u003ePotato Research\u003c\/em\u003e, 63(1), 97–119.\u003c\/li\u003e\n\u003cli\u003eNaumann, M., Koch, M., Thiel, H. et al. (2020). The importance of nutrient management for potato production Part II: plant nutrition and tuber quality. \u003cem\u003ePotato Research\u003c\/em\u003e, 63(1), 121–137.\u003c\/li\u003e\n\u003cli\u003eLindhauer, M.G. \u0026amp; De Fekete, M.A.R. (1990). Starch synthesis in potato (\u003cem\u003eSolanum tuberosum\u003c\/em\u003e) tubers: activity of selected enzymes in dependence of potassium content in storage tissue. \u003cem\u003ePlant and Soil\u003c\/em\u003e, 124(2), 291–295.\u003c\/li\u003e\n\u003cli\u003eNitsos, R.E. \u0026amp; Evans, H.J. (1969). Effects of univalent cations on the activity of particulate starch synthetase. \u003cem\u003ePlant Physiology\u003c\/em\u003e, 44(9), 1260–1266.\u003c\/li\u003e\n\u003cli\u003ePalta, J.P. (2010). Improving potato tuber quality and production by targeted calcium nutrition: the discovery of tuber roots leading to a new concept in potato nutrition. \u003cem\u003ePotato Research\u003c\/em\u003e, 53(4), 267–275.\u003c\/li\u003e\n\u003cli\u003eKeren-Keiserman, A., Singh Baghel, R., Fogelman, E. et al. (2019). Effects of polyhalite fertilization on skin quality of potato tuber. \u003cem\u003eFrontiers in Plant Science\u003c\/em\u003e, 10, 1379.\u003c\/li\u003e\n\u003cli\u003eJansky, S.H. (2010). Potato flavor. \u003cem\u003eAmerican Journal of Potato Research\u003c\/em\u003e, 87(2), 209–217.\u003c\/li\u003e\n\u003cli\u003eMorris, W.L., Ross, H.A., Ducreux, L.J.M. et al. (2007). Umami compounds are a determinant of the flavor of potato (\u003cem\u003eSolanum tuberosum\u003c\/em\u003e L.). \u003cem\u003eJournal of Agricultural and Food Chemistry\u003c\/em\u003e, 55(23), 9627–9633.\u003c\/li\u003e\n\u003cli\u003eLori, M., Symnaczik, S., Mäder, P. et al. (2017). Organic farming enhances soil microbial abundance and activity — a meta-analysis and meta-regression. \u003cem\u003ePLOS ONE\u003c\/em\u003e, 12(7), e0180442.\u003c\/li\u003e\n\u003cli\u003eLaird, D., Fleming, P., Wang, B. et al. (2010). Biochar impact on nutrient leaching from a Midwestern agricultural soil. \u003cem\u003eGeoderma\u003c\/em\u003e, 158(3–4), 436–442.\u003c\/li\u003e\n\u003cli\u003eKhan, W., Rayirath, U.P., Subramanian, S. et al. (2009). Seaweed extracts as biostimulants of plant growth and development. \u003cem\u003eJournal of Plant Growth Regulation\u003c\/em\u003e, 28(4), 386–399.\u003c\/li\u003e\n\u003cli\u003eCanellas, L.P., Olivares, F.L., Aguiar, N.O. et al. (2015). Humic and fulvic acids as biostimulants in horticulture. \u003cem\u003eScientia Horticulturae\u003c\/em\u003e, 196, 15–27.\u003c\/li\u003e\n\u003cli\u003eHajšlová, J., Schulzová, V., Slanina, P. et al. (2005). Quality of organically and conventionally grown potatoes: four-year study of micronutrients, metals, secondary metabolites, enzymic browning and organoleptic properties. \u003cem\u003eFood Additives and Contaminants\u003c\/em\u003e, 22(6), 514–534.\u003c\/li\u003e\n\u003cli\u003eHauer-Jákli, M. \u0026amp; Tränkner, M. (2019). Critical leaf magnesium thresholds and the impact of magnesium on plant growth and photo-oxidative defense: a systematic review and meta-analysis from 70 years of research. \u003cem\u003eFrontiers in Plant Science\u003c\/em\u003e, 10, 766.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp style=\"margin-top: 0.6em;\"\u003eFigures describe the published literature on these ingredient classes and are not product-specific yield guarantees.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003c!-- ═══════════ TAB 6 — FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-pt-panel6\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eQuestions \u0026amp; Answers\u003c\/span\u003e\n\u003ch2\u003eFrequently asked questions about potato fertiliser\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq1\"\u003eWhat is the best fertiliser for potatoes?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eA potash-led feed with moderate nitrogen, its potash in sulphate form, and calcium and magnesium alongside, which is what this 3-5-8 blend is built to be. Feed before planting and at earthing up, and keep the ridge moist: no feed makes up for a dry July.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq2\"\u003eWhat NPK is best for potatoes?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eMore potash than nitrogen. Potatoes hold more potassium than any other major nutrient, and a high nitrogen supply can delay tuber formation (Koch et al., 2020). This feed is 3-5-8, a K:N ratio of 2.7:1, with 5% phosphate for tuber set.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq3\"\u003eDo I need to feed potatoes?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eOn rich, well-manured ground you'll get a crop without it. In most allotment soils, grow bags and containers, feeding pays: a good crop removes about 25 g of potassium from every square metre (Torabian et al., 2021), and bagged compost runs short long before a maincrop finishes.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq4\"\u003eWhen should I feed potatoes, and how often?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eInto the bed or container 2–4 weeks before planting, at planting, at first earthing up (3–4 weeks after emergence), then every 3–4 weeks through active bulking. At haulm yellowing, stop or give a single low-rate application. Rates for each stage are on the How to Use tab.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq5\"\u003eDo I need different rates for earlies and maincrops?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Earlies: lower rates, 1–2 top-dresses. Maincrops: upper rates, 2–3 top-dresses through bulking. Same base dressing for both. The Growing Guide tab breaks it down by variety type.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq6\"\u003eCan I use this in grow bags with pre-fertilised compost?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Use 5g\/L rather than 7.5g\/L for the initial mix, and begin top-dressing at 6–8 weeks rather than immediately at first earthing up.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq7\"\u003eLush haulm but few flowers — what should I do?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThat is excess nitrogen relative to potassium. Skip the next top-dress, reduce rates and stretch to 5–6 weeks. It is common in recently manured soil.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq8\"\u003eWhy sulphate of potash and not muriate?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eBecause the chloride form costs starch. In a German trial reported by Naumann et al. (2020), potassium chloride gave about 2% less starch and around a tonne less starch per hectare than the sulphate form. The mineral potash here comes from sulphate of potash and Yorkshire polyhalite, which is also sold on its own as \u003ca href=\"\/products\/polyhalite\"\u003ePolyhalite Fertiliser\u003c\/a\u003e.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq9\"\u003eWill it help with common scab?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eDon't buy it for that. Scab comes down to growing conditions: it is worst when the soil dries out while tubers are forming, and on alkaline or freshly limed ground. Keep the ridge moist in those weeks, don't lime ahead of potatoes and pick a scab-resistant variety if your soil is prone.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq10\"\u003eDoes it work with mycorrhizal fungi?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Potato roots partner with arbuscular mycorrhizal fungi, and an inoculant such as our \u003ca href=\"\/products\/mycorrhizal-fungi-powder-premium-endo-ecto-mycorrhizae-inoculant\"\u003emycorrhizal fungi powder\u003c\/a\u003e can go in alongside this feed: apply it as its own label directs and keep this feed the usual 10 cm from the seed tuber. See our \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-are-mycorrhizal-fungi-a-guide-for-uk-gardeners\"\u003eguide to mycorrhizal fungi\u003c\/a\u003e.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq11\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq11\"\u003eIs it safe for edible crops, pets and children?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. It is made from organic and mineral ingredients, and there is no withholding period before harvest. Dogs like the smell of meal-based feeds, so fork it in, water it and keep the bag closed.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq12\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq12\"\u003eIs it organic?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is made with organic and natural ingredients (plant meals, seaweed, mealworm frass, mined minerals, humic substances and a live microbial culture) and no GMO inputs. The finished blend is not registered with an organic certification body, so there is no certification logo on the bag.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pt-faq13\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pt-faq13\"\u003eCan I use it on sweet potatoes or other vegetables?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThe high potash and moderate nitrogen suit sweet potatoes broadly; use lower rates. It was designed for \u003cem\u003eSolanum tuberosum\u003c\/em\u003e, though. For a mixed vegetable plot the \u003ca href=\"\/products\/organic-fruit-vegetable-fertiliser\"\u003eFruit \u0026amp; Vegetable Fertiliser 4-5-6\u003c\/a\u003e fits better, and tomatoes, which belong to the potato family, have their own \u003ca href=\"\/products\/organic-tomato-fertiliser\"\u003etomato fertiliser\u003c\/a\u003e.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-pt-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-pt-faq-paa1\" class=\"drf-faq-q\"\u003eHow much potato fertiliser do I need?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eFor beds and allotments, fork 125–175 g per m² into the top 15–20 cm before planting (175 g for depleted ground), then top-dress at 100–150 g per m² every 3–4 weeks: 100 g for earlies and 150 g for maincrops through bulking. For single plants, mix 30–45 g into the planting hole, keeping it 10 cm from the tuber. In containers and grow bags, top-dress at 1.5–2.5 g per litre of pot volume every 3–4 weeks. Feed generously for big maincrop tubers, but don't overdo the nitrogen.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Dr Forest","offers":[{"title":"1.5kg (750gx2)","offer_id":57049795690870,"sku":"DF-POTATO-1.5","price":11.5,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":57049795723638,"sku":"DF-POTATO-4","price":24.0,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":57049795756406,"sku":"DF-POTATO-9","price":44.0,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":57049795789174,"sku":"DF-POTATO-15","price":60.49,"currency_code":"GBP","in_stock":true},{"title":"30kg","offer_id":57049795821942,"sku":"DF-POTATO-30","price":120.0,"currency_code":"GBP","in_stock":true},{"title":"60kg","offer_id":57049795854710,"sku":"DF-POTATO-60","price":240.0,"currency_code":"GBP","in_stock":true},{"title":"120kg","offer_id":57049795887478,"sku":"DF-POTATO-120","price":420.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/premium-potato-fertiliser-slow-release-plant-food-high-yield-797.webp?v=1786553590"},{"product_id":"boron-humate-granules","title":"Boron Humate Granules | 3.23% Boron | Slow-Release","description":"\u003c!-- Dr Forest - Boron Humate Granules Shopify product description --\u003e\u003c!-- Prefix: drf-bh- --\u003e\u003c!-- Design System v1.0 - square corners, Cormorant 400, gold accents, no border-radius --\u003e\u003c!-- Pure CSS radio-input tabs. No JavaScript. Shopify-safe. --\u003e\u003c!-- REVISION 2026-10-20: rates checked against NTS Stabilised Boron Granules PIS (10-30 kg\/ha broadcast = 1-3 g\/m2; max 15 kg\/ha banded = 1.5 g\/m2; blends 5-10% at farm rates). Analysis confirmed 3.23% B \/ 57.2% humic acids. Compost pre-mix guidance added. Blend directions now dose-based. --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; 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background: var(--drf-white); display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: var(--drf-gold); border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 800px; }\n\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 1.2em; color: var(--drf-grn); text-align: center; padding: 1.2em 0.5em; margin: 1.5em auto; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); max-width: 90%; line-height: 1.4; }\n\n  .drf-refs { font-size: 0.78em; color: var(--drf-muted); line-height: 1.55; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-grn); margin-bottom: 0.5em; }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.35em; }\n\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); margin: 1.5em auto; width: 200px; }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-bh-tabset\" id=\"drf-bh-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-bh-tabset\" id=\"drf-bh-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-bh-tabset\" id=\"drf-bh-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-bh-tabset\" id=\"drf-bh-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-bh-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-bh-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-bh-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-bh-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003c!-- TAB 1: OVERVIEW --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-bh-panel1\"\u003e\n\u003ch2\u003eBoron humate granules, 3.23% boron complexed with humic acid, slow release\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003e3.23% Boron\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e57% Humic Acids\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003e2–4 mm Granule\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eSlow Release\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003ePre-Flower Feed\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eRoot-Zone Stable\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eBoron humate is boron fused with humic acid and pressed into a 2–4 mm granule, so the boron releases over a full growing season instead of washing out with the first heavy rain.\u003c\/strong\u003e Boron is the most leachable of the trace elements. In sandy or low-humus soils a soluble boron feed can be halfway to the water table before the plant has drawn on it. Binding it to humic acid holds it in the root zone.\u003c\/p\u003e\n\u003cp\u003eBoron matters most at flowering. It governs pollen tube growth, seed and fruit set, sugar transport, and the cross-linking of pectin in cell walls. It also governs how efficiently the plant takes up and distributes calcium, which is why boron shortage and calcium disorders so often turn up together. Deficiency shows as poor fruit set, hollow or corky stems, distorted new growth and brittle leaves.\u003c\/p\u003e\n\u003cp\u003eThis is a corrective input, not a routine feed. Because the safe window for boron is narrower than for any other nutrient, we would rather you tested the soil first than applied it on suspicion.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e3.23%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eBoron\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e57.2%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eHumic acids\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e2–4 mm\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eGranule size\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e1–2 g\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePer m²\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eRead this before you apply\u003c\/span\u003e\n\u003cp\u003eBoron has the narrowest safe window of any plant nutrient. The gap between sufficiency and toxicity is smaller than for any other element. Weigh the dose. Do not apply more often than the schedule below, and do not use it on a bed that has already had a boron-containing feed this season.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat it is for\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoor fruit set\u003c\/strong\u003e — flowers that open and drop without setting fruit, on tomatoes, courgettes, beans and top fruit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSandy and free-draining soils\u003c\/strong\u003e — where soluble boron leaches out before the plant can use it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrassicas and root crops\u003c\/strong\u003e — swede, turnip, beetroot and cauliflower are the classic boron-hungry group; brown or hollow hearts are the tell.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium disorders that persist\u003c\/strong\u003e — where calcium is present in the soil but is not reaching the fruit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlending into a granular feed\u003c\/strong\u003e — the granule size matches most dry fertilisers, so it mixes without separating out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eBoron humate granules\u003c\/h4\u003e\n\u003cp\u003eBoron held on a humic acid backbone. Releases across the crop cycle as soil biology works on the humate. Resists leaching. Granular, so it can be broadcast or blended into a dry feed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eSoluble borax or boric acid\u003c\/h4\u003e\n\u003cp\u003eFully available on day one, gone within weeks on a light soil. Easy to overdose because the whole dose is plant-available at once. Useful for a fast correction, poor for season-long supply.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003cp\u003e\u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- TAB 2: THE SCIENCE --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-bh-panel2\"\u003e\n\u003ch2\u003eWhy complex boron with humic acid\u003c\/h2\u003e\n\u003cp\u003eBoron moves through soil as borate, a small uncharged or singly-charged species that most soils hold poorly. On a sandy, low-organic-matter soil it behaves much like nitrate: it goes where the water goes. Organic matter is the main thing that slows it down.\u003c\/p\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eOrganic matter binds borate\u003c\/h4\u003e\n\u003cp\u003eYermiyahu, Keren and Chen (1995, \u003cem\u003eSoil Science Society of America Journal\u003c\/em\u003e 59:405–409) showed that boron sorption rose as the organic matter content of the soil increased, holding borate against loss to drainage. Complexing boron onto humic acid before it ever reaches the soil applies the same chemistry at source.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eBoron is structural, not catalytic\u003c\/h4\u003e\n\u003cp\u003eBoron cross-links rhamnogalacturonan-II in the pectin network of the primary cell wall. Goldbach and Wimmer (2007, \u003cem\u003eJournal of Plant Nutrition and Soil Science\u003c\/em\u003e 170:39–48) set out how this cross-linking governs wall stability and membrane function. Without it, new tissue is brittle and malformed, which is why deficiency shows first in growing points.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003ePollination is the sensitive window\u003c\/h4\u003e\n\u003cp\u003eBrown and colleagues (2002, \u003cem\u003ePlant Biology\u003c\/em\u003e 4:205–223) reviewed boron in plant biology and identified pollen germination and pollen tube elongation as among the most boron-sensitive processes in the plant. A shortfall at flowering costs yield even where vegetative growth looks fine.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eLow boron is a whole-plant problem\u003c\/h4\u003e\n\u003cp\u003eDell and Huang (1997, \u003cem\u003ePlant and Soil\u003c\/em\u003e 193:103–120) catalogued the physiological consequences of low boron: impaired root elongation, disrupted sugar transport, reduced calcium mobility. The symptoms are diffuse, which is part of why boron shortage is so often missed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eThe humate is not just a carrier\u003c\/h4\u003e\n\u003cp\u003eAt 57.2% humic acids the carrier does work of its own. Rose and colleagues (2014, \u003cem\u003eAdvances in Agronomy\u003c\/em\u003e 124:37–89) pooled published trials of humic substances and found mean increases of roughly a fifth in both root and shoot dry weight. The caveat belongs with the figure: that same analysis found humic substances from compost sources outperformed those from lignite and brown coal, and this humate is leonardite-derived. Nardi and colleagues (2002, \u003cem\u003eSoil Biology \u0026amp; Biochemistry\u003c\/em\u003e 34:1527–1536) and Canellas and Olivares (2014) describe the mechanism, which is auxin-like activity on root cells.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003eThe toxicity margin is real\u003c\/h4\u003e\n\u003cp\u003eGoldberg (1997, \u003cem\u003ePlant and Soil\u003c\/em\u003e 193:35–48) puts it plainly: the range between deficient and toxic boron is smaller than for any other nutrient element. Nable, Bañuelos and Paull (1997, \u003cem\u003ePlant and Soil\u003c\/em\u003e 193:181–198) reviewed what toxicity looks like when it does happen, and how slow and expensive it is to reverse in the field. Slow release widens the practical margin because the plant never meets the whole dose at once. It does not remove it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eBoron shortage is common. Boron excess is harder to fix. Weigh the dose.\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eReferences\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eBrown, P.H. et al. (2002). Boron in plant biology. \u003cem\u003ePlant Biology\u003c\/em\u003e 4:205–223.\u003c\/li\u003e\n\u003cli\u003eCanellas, L.P. \u0026amp; Olivares, F.L. (2014). Physiological responses to humic substances as plant growth promoter. \u003cem\u003eChemical and Biological Technologies in Agriculture\u003c\/em\u003e 1:3.\u003c\/li\u003e\n\u003cli\u003eDell, B. \u0026amp; Huang, L. (1997). Physiological response of plants to low boron. \u003cem\u003ePlant and Soil\u003c\/em\u003e 193:103–120.\u003c\/li\u003e\n\u003cli\u003eGoldbach, H.E. \u0026amp; Wimmer, M.A. (2007). Boron in plants and animals: is there a role beyond cell-wall structure? \u003cem\u003eJournal of Plant Nutrition and Soil Science\u003c\/em\u003e 170:39–48.\u003c\/li\u003e\n\u003cli\u003eGoldberg, S. (1997). Reactions of boron with soils. \u003cem\u003ePlant and Soil\u003c\/em\u003e 193:35–48.\u003c\/li\u003e\n\u003cli\u003eNable, R.O., Bañuelos, G.S. \u0026amp; Paull, J.G. (1997). Boron toxicity. \u003cem\u003ePlant and Soil\u003c\/em\u003e 193:181–198.\u003c\/li\u003e\n\u003cli\u003eNardi, S. et al. (2002). Physiological effects of humic substances on higher plants. \u003cem\u003eSoil Biology \u0026amp; Biochemistry\u003c\/em\u003e 34:1527–1536.\u003c\/li\u003e\n\u003cli\u003eRose, M.T. et al. (2014). A meta-analysis and review of plant-growth response to humic substances. \u003cem\u003eAdvances in Agronomy\u003c\/em\u003e 124:37–89.\u003c\/li\u003e\n\u003cli\u003eYermiyahu, U., Keren, R. \u0026amp; Chen, Y. (1995). Boron sorption by soil in the presence of composted organic matter. \u003cem\u003eSoil Science Society of America Journal\u003c\/em\u003e 59:405–409.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- TAB 3: HOW TO USE --\u003e \u003c!-- Rates within NTS label: 1-3 g\/m2 broadcast, 1.5 g\/m2 banded max. Blend inclusion set by dose, not a fixed %. --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-bh-panel3\"\u003e\n\u003ch2\u003eHow to use boron humate granules\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWeigh it, then bulk it up with compost\u003c\/span\u003e\n\u003cp\u003eA level teaspoon of granules is roughly 4 g. The garden rate below is 1–2 g per square metre, so a quarter to half a level teaspoon spread across a whole square metre. That is too little to spread evenly on its own, and this is not a product to apply by eye.\u003c\/p\u003e\n\u003cp\u003eFor small areas and individual plants, weigh the dose for the whole area, mix it thoroughly into compost, about 1 litre of compost per square metre, then spread the mix evenly. The compost carries the granules out across the bed instead of leaving them in a few concentrated spots. Use garden compost or a plain soil conditioner: many bagged multipurpose composts already contain added trace elements, including boron.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eGeneral soil broadcast\u003c\/h4\u003e\n\u003cp class=\"drf-rate-meta\"\u003e\u003cstrong\u003eRate\u003c\/strong\u003e 1–2 g per m² · \u003cstrong\u003eFrequency\u003c\/strong\u003e Once per season\u003c\/p\u003e\n\u003cp\u003eScatter evenly over the bed and rake in lightly, or apply to the surface of an established bed and water in. Use the lower end on loam and clay, the upper end on sand and other free-draining soils where leaching is the problem. On a single bed or a few square metres, mix the weighed dose into compost first, about 1 litre per square metre, and spread the mix.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eAbsolute ceiling: 3 g per m² broadcast. Never exceed this, whatever the soil type.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBlended into a granular feed\u003c\/h4\u003e\n\u003cp class=\"drf-rate-meta\"\u003e\u003cstrong\u003eRate\u003c\/strong\u003e 2 g of granules for every square metre the feed will cover · \u003cstrong\u003eFrequency\u003c\/strong\u003e At the main feed\u003c\/p\u003e\n\u003cp\u003eWhat matters is how much boron humate reaches each square metre, not the blend percentage, so work it out from how much feed you spread. Weigh out 2 g of granules for every square metre the batch of feed will cover and mix them in. The 2–4 mm granule size matches most dry feeds, so the blend stays even rather than separating out.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFeed spread at 20 g per m²: 100 g of granules per 1 kg of feed (10%).\u003c\/li\u003e\n\u003cli\u003eFeed spread at 40 g per m²: 50 g per 1 kg (5%).\u003c\/li\u003e\n\u003cli\u003eFeed spread at 70 g per m²: 30 g per 1 kg (3%).\u003c\/li\u003e\n\u003cli\u003eFeed spread at 100 g per m²: 20 g per 1 kg (2%).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe 5–10% inclusion you may see quoted for farm blends assumes the low spread rates used on fields. Most garden feeds go on more heavily, so they need a lower percentage.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003ePre-flower application on fruiting crops\u003c\/h4\u003e\n\u003cp class=\"drf-rate-meta\"\u003e\u003cstrong\u003eRate\u003c\/strong\u003e 1 g per m², or 0.3 g per established plant · \u003cstrong\u003eFrequency\u003c\/strong\u003e Once, before flowering\u003c\/p\u003e\n\u003cp\u003eApply two to four weeks before flowers open on tomatoes, courgettes, beans, top fruit and soft fruit. Because release is gradual, the boron needs to be in the ground ahead of the flowering window rather than during it.\u003c\/p\u003e\n\u003cp\u003e0.3 g is too small to weigh on a kitchen scale, so dose individual plants through compost. Mix 3 g of granules (about three-quarters of a level teaspoon) thoroughly into a 10-litre bucket of compost, then give each established plant 1 litre of the mix as a top dressing around the base, kept clear of the stem. That delivers 0.3 g per plant. For closely spaced crops such as beans, dose by the square metre instead.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBrassicas and root crops\u003c\/h4\u003e\n\u003cp class=\"drf-rate-meta\"\u003e\u003cstrong\u003eRate\u003c\/strong\u003e 2–3 g per m² · \u003cstrong\u003eFrequency\u003c\/strong\u003e Once at bed preparation\u003c\/p\u003e\n\u003cp\u003eSwede, turnip, beetroot and cauliflower have the highest boron requirement of the common garden crops, and brown heart in swede and hollow stem in cauliflower are the classic symptoms. Use 2 g per m² on loam and clay, and up to 3 g on sandy or free-draining soil. Work into the top 100–150 mm before sowing or planting out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eBanded and spot applications\u003c\/span\u003e\n\u003cp\u003eApplying around individual plants or in a band concentrates the dose into a fraction of the bed area, so the ceiling is lower. Do not exceed the equivalent of \u003cstrong\u003e1.5 g per m²\u003c\/strong\u003e where the granules are banded or placed around individual plants rather than spread across the whole surface.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplying it\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003eWeigh the dose for the area. Do not estimate. A kitchen scale is accurate enough.\u003c\/li\u003e\n\u003cli\u003eFor small areas or individual plants, mix the weighed dose thoroughly into compost, about 1 litre per square metre, so it spreads evenly.\u003c\/li\u003e\n\u003cli\u003eScatter evenly across the whole area rather than concentrating it near stems or crowns.\u003c\/li\u003e\n\u003cli\u003eRake into the top few centimetres if the bed is empty, or leave on the surface if planted.\u003c\/li\u003e\n\u003cli\u003eWater in. The granule needs moisture and soil biology to begin releasing.\u003c\/li\u003e\n\u003cli\u003eNote the date. One application per bed per season is the limit.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eDo not stack boron sources\u003c\/span\u003e\n\u003cp\u003eIf you are already using a feed that contains boron, whether that is a trace element mix, a cal-mag product, or a compound fertiliser listing boron on the label, do not add this on top in the same season. Boron accumulates. Symptoms of excess are leaf margin scorch and tip burn on older leaves first.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks alongside\u003c\/span\u003e\n\u003cp\u003ePair with \u003ca href=\"\/products\/humic-acid\"\u003eHumic Acid Flakes\u003c\/a\u003e where you want an immediate soluble humic input for drenching or fertigation alongside the slow-release granule. \u003ca href=\"\/products\/fulvic-acid\"\u003eFulvic Acid Powder\u003c\/a\u003e is the foliar-friendly chelator of the pair. Neither contains boron, so neither stacks with this product.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- TAB 4: FAQ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-bh-panel4\"\u003e\n\u003ch2\u003eQuestions\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq1\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq1\"\u003eWhat is boron humate?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eBoron chemically complexed with humic acid and granulated at 2–4 mm. It carries 3.23% boron and 57.2% humic acids. The humic acid holds the boron against leaching, so it feeds the plant across a season rather than in a single pulse.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq2\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq2\"\u003eWhy not just use borax?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eBorax is fully soluble, so on a light soil most of it can leach past the roots within a few weeks of rain. It also delivers the entire dose at once, which is the main route to boron toxicity in gardens. Boron humate trades that immediacy for persistence. If you have a diagnosed acute deficiency and need a fast correction, a soluble source has its place, but for season-long supply the humate form is the safer tool.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq3\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq3\"\u003eHow do I know if my soil is short of boron?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThe reliable answer is a soil test, and boron is worth testing for specifically because it is not always included in a standard package. Visually: hollow or brown heart in swede and beetroot, hollow stem in cauliflower and broccoli, corky patches on apple and pear, flowers dropping without setting fruit, and distorted or brittle new growth. Sandy soils, chalky soils and soils that have been heavily limed are the usual suspects.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq4\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq4\"\u003eCan I overdo it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes, and this is the one trace element where that warning is not boilerplate. The gap between enough and too much is narrower for boron than for any other essential nutrient. Weigh the dose, apply once per bed per season, and do not combine with another boron-containing feed. Excess shows as scorching along the leaf margins and at the tips of older leaves. Boron is also slow and difficult to leach back out of a soil once it is there, so the correction is a great deal harder than the mistake.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq5\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq5\"\u003eHow long does it take to work?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eIt is a slow-release granule, so it does not act like a foliar feed. Expect release to begin within a couple of weeks of watering in and to continue across the growing season. For fruiting crops, apply two to four weeks before flowering rather than at flowering.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq6\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq6\"\u003eIs it safe around children, pets and bees?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eIt has no pesticidal action and is worked into the soil rather than applied to flowers or foliage, so it is not something pollinators come into contact with in normal garden use. As with any concentrated fertiliser, store it out of reach of children and pets and keep it in its packaging. Water it in after applying so granules are not left loose on the surface.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq7\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq7\"\u003eIs it organic?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eNo, and we do not claim it. The humate fraction comes from leonardite, a mined fossil material, which sits outside organic certification. Certifiers that do permit boron inputs treat them as restricted, allowed only where a soil or leaf test has shown an actual need. That is a sensible standard to hold yourself to whether or not you are certified.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq8\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq8\"\u003eWhat is the difference between this and your humic acid products?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003e\n\u003ca href=\"\/products\/humic-acid\"\u003eHumic Acid Flakes\u003c\/a\u003e are a fully water-soluble humic concentrate for drenches, foliar sprays and fertigation, with no boron. This product is a granule that carries boron on a humic backbone and stays put in the soil. If you want the background on the humic side, we have written up \u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-humic-acid\"\u003ewhat humic acid actually is\u003c\/a\u003e and \u003ca href=\"\/blogs\/the-dr-forest-blog\/humic-vs-fulvic-acid\"\u003ehow humic and fulvic acid differ\u003c\/a\u003e.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq9\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq9\"\u003eCan I mix it with my other fertilisers?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes, as a dry blend. Work it out from how much feed you spread: add 2 g of granules for every square metre the feed will cover. A feed spread at 40 g per square metre takes 50 g of granules per kilo (5%); one spread at 100 g per square metre takes 20 g per kilo (2%). The granule size matches most dry fertilisers so it distributes evenly. If the base feed already lists boron on the label, do not blend at all.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-bh-faq10\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-bh-faq10\"\u003eHow should I store it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eCool, dry, sealed, out of direct sunlight and away from children and pets. Granules are hygroscopic and will clump if left open in a damp shed. Stored dry it keeps indefinitely.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-bh-faq-paa1\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-bh-faq-paa1\" class=\"drf-faq-q\"\u003eHow do I apply boron humate granules?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eFor a bed, scatter 1 to 2 g per square metre once a season (a quarter to half a level teaspoon), then rake in lightly or water in. For brassicas and root crops, use 2 to 3 g per square metre once at bed preparation, the higher rate on sandy soil. For fruiting crops, use 1 g per square metre, or 0.3 g per plant, two to four weeks before the flowers open. Doses this small are easiest to apply mixed into compost: weigh the dose, mix it into about 1 litre of compost per square metre, and spread the mix. For single plants, mix 3 g into a 10-litre bucket of compost and give each plant 1 litre.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-bh-faq-paa2\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-bh-faq-paa2\" class=\"drf-faq-q\"\u003eWhat does boron do for plants?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eIt matters most at flowering. Boron drives pollen tube growth, seed and fruit set, sugar transport and cell wall strength. It also affects how well the plant moves calcium around. When it's short, you see poor fruit set, hollow or corky stems, distorted new growth and brittle leaves.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-bh-faq-paa3\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-bh-faq-paa3\" class=\"drf-faq-q\"\u003eWhich plants need boron most?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eBrassicas and root crops. Swede, turnip, beetroot and cauliflower have the highest need of the common garden crops, and brown or hollow hearts are the tell. Tomatoes, courgettes, beans and top fruit that flower but don't set fruit can also benefit, as can plants on sandy, free-draining soil where boron washes out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-bh-faq-paa4\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-bh-faq-paa4\" class=\"drf-faq-q\"\u003eShould I use it on all my plants?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003e\n\u003cp\u003eNo. It's a corrective input, not a routine feed. Use it where a soil test or clear symptoms show boron is short. The gap between enough and too much is narrower for boron than for any other nutrient, so weigh the dose and stay at or below 3 g per square metre.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eFurther reading\u003c\/span\u003e\n\u003cp\u003e\u003ca href=\"\/blogs\/the-dr-forest-blog\/what-is-humic-acid\"\u003eWhat is humic acid?\u003c\/a\u003e · \u003ca href=\"\/blogs\/the-dr-forest-blog\/humic-acid-benefits-plants\"\u003eBenefits of humic acid for plants\u003c\/a\u003e · \u003ca href=\"\/blogs\/the-dr-forest-blog\/how-to-apply-humic-acid\"\u003eHow to apply humic acid\u003c\/a\u003e · \u003ca href=\"\/blogs\/the-dr-forest-blog\/humic-vs-fulvic-acid\"\u003eHumic vs fulvic acid\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"250g","offer_id":58302777950582,"sku":"DF-BORON-250G","price":9.19,"currency_code":"GBP","in_stock":false},{"title":"500g","offer_id":58302777983350,"sku":"DF-BORON-500G","price":16.09,"currency_code":"GBP","in_stock":true},{"title":"1kg","offer_id":58302778016118,"sku":"DF-BORON-1","price":22.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/boronhumic.png?v=1786553589"},{"product_id":"organic-liquid-fertiliser-5-2-5","title":"Liquid Fertiliser 5-2-5 | Balanced Organic","description":"\u003c!-- Dr Forest — Organic Liquid Fertiliser 5-2-5 Growth Feed --\u003e\n\u003c!-- Prefix: drf-lv- | Design System v1.0 | 4-tab --\u003e\n\u003c!-- Pure CSS radio tabs. No JavaScript. Shopify-safe. --\u003e\n\u003c!-- REVISED: references corrected, provenance removed (liquid), slaughterhouse wording removed, em-dashes stripped, schema moved out. --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #3A4A40; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-cream:      #F5F2EC;\n    --drf-border:     #d4cfc5;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n  }\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; letter-spacing: -0.3px; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; 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overflow: hidden; }\n  .drf-tabs-wrap input[type=\"radio\"] { display: none; }\n  .drf-tab-labels { display: flex; align-items: stretch; border-bottom: 2px solid var(--drf-border); margin-bottom: 1.2em; }\n  .drf-tab-labels label { flex: 1 1 0; padding: 0.75em 0.4em; font-size: 0.82em; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: #8b6914; background: var(--drf-gold-light); cursor: pointer; text-align: center; display: flex; align-items: center; justify-content: center; border-bottom: 3px solid var(--drf-gold); margin-bottom: -2px; transition: all 0.15s; }\n  .drf-tab-labels label:hover { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); }\n  .drf-panel { display: none; }\n  #drf-lv-tab1:checked ~ .drf-tab-labels label[for=\"drf-lv-tab1\"],\n  #drf-lv-tab2:checked ~ .drf-tab-labels label[for=\"drf-lv-tab2\"],\n  #drf-lv-tab3:checked ~ .drf-tab-labels label[for=\"drf-lv-tab3\"],\n  #drf-lv-tab4:checked ~ .drf-tab-labels label[for=\"drf-lv-tab4\"] { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 600; }\n  #drf-lv-tab1:checked ~ .drf-panels #drf-lv-panel1,\n  #drf-lv-tab2:checked ~ .drf-panels #drf-lv-panel2,\n  #drf-lv-tab3:checked ~ .drf-panels #drf-lv-panel3,\n  #drf-lv-tab4:checked ~ .drf-panels #drf-lv-panel4 { display: block; }\n\n  \/* CALLOUTS *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); border-left-color: var(--drf-gold); color: var(--drf-cream); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n\n  \/* PULL QUOTE *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 1.3em; color: var(--drf-grn); text-align: center; line-height: 1.4; padding: 1.1em 1em; margin: 1.6em 0; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); }\n\n  \/* MECHANISM CARDS *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-mech p { font-size: 0.92em; margin-bottom: 0; }\n\n  \/* RATE CARDS *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); }\n  .drf-rate p { font-size: 0.92em; margin-bottom: 0; }\n\n  \/* STEPS *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid var(--drf-border); }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.9em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* USE CASES *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* COMPARISON *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* TABLES *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1.2em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); 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font-size: 0.92em; line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '\\2212'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* REFS + RULE *\/\n  .drf-refs { font-size: 0.78em; color: var(--drf-muted); line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput checked id=\"drf-lv-tab1\" name=\"drf-lv-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-lv-tab2\" name=\"drf-lv-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-lv-tab3\" name=\"drf-lv-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-lv-tab4\" name=\"drf-lv-tabset\" type=\"radio\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-lv-tab1\"\u003eOverview\u003c\/label\u003e\n\u003clabel for=\"drf-lv-tab2\"\u003eThe Science\u003c\/label\u003e\n\u003clabel for=\"drf-lv-tab3\"\u003eHow to Use\u003c\/label\u003e\n\u003clabel for=\"drf-lv-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-lv-panel1\"\u003e\n\u003ch2\u003eOrganic liquid fertiliser 5-2-5, a balanced growth feed with magnesium\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eNPK 5-2-5\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003ePlus magnesium\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eTrace elements\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eClear solution\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003ePlant-derived\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eFoliar or root\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003eLiquid fertiliser 5-2-5 is a balanced natural plant food for the main vegetative stretch of the season. Nitrogen and potassium are matched at 5% each with phosphorus held at 1.8%, and the formulation carries magnesium and trace elements so that a season of feeding does not quietly create a secondary deficiency.\u003c\/p\u003e\n\u003cp\u003eEverything in it is plant-derived, including the magnesium and the full trace element set. That is unusual. Most liquid feeds reach for mineral salts or synthetic chelates for the micronutrients even when the macronutrients come from plant material, and we did not want to.\u003c\/p\u003e\n\u003cp\u003eThe nutrients are in true solution rather than suspension, so there is nothing to settle, nothing to shake and nothing to block a nozzle. It works equally well through a watering can, a drip line or a sprayer.\u003c\/p\u003e\n\u003cp\u003eThis is the middle feed in a three-stage programme. A rooting feed goes in at establishment and a high-potash feed takes over at fruiting. The 5-2-5 covers the long stretch in between, which for most British gardeners means May through to mid-July.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e5%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eNitrogen (N)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e1.8%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePhosphorus (as P₂O₅)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e5%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePotassium (as K₂O)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e3.5 – 4.5\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003epH of concentrate\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat to use a 5-2-5 growth feed for\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eVegetative growth on tomatoes, peppers, cucumbers and courgettes\u003c\/strong\u003e the stretch between planting out and first flower, when the plant is building the frame that will carry the crop. Feed here and the plant has something to fruit on later\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeafy vegetables and cutting salads\u003c\/strong\u003e chard, spinach, kale, lettuce and oriental greens want steady nitrogen with enough potassium to keep tissue firm rather than sappy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrassicas, leeks and sweetcorn through the main season\u003c\/strong\u003e long-season heavy feeders that need consistent supply rather than occasional large doses\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContainer displays and hanging baskets in build-up\u003c\/strong\u003e the establishment weeks before flowering starts in earnest, when the plant needs bulk before it needs bloom\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYoung shrubs, hedging and newly planted perennials\u003c\/strong\u003e first and second season after planting, through spring and early summer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeekly maintenance feeding across a mixed plot\u003c\/strong\u003e the one vegetable fertiliser that suits most things at once, which matters when you are watering forty pots and do not want four different bottles\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreventing magnesium shortfall under heavy feeding\u003c\/strong\u003e potassium competes with magnesium at the root, so including magnesium in the feed itself heads off the interveinal yellowing that heavy potash programmes provoke\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhere 5-2-5 sits against the alternatives\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eLiquid 5-2-5 growth feed\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBalanced N and K for the vegetative stage, phosphorus held low and steady\u003c\/li\u003e\n\u003cli\u003eMagnesium and trace elements included, so no secondary deficiency creeps in\u003c\/li\u003e\n\u003cli\u003eTrue solution, so no settling, no shaking, clean through drip and sprayer\u003c\/li\u003e\n\u003cli\u003ePlant-derived throughout, macronutrients and micronutrients alike\u003c\/li\u003e\n\u003cli\u003eWorks as a root drench or a foliar spray at the same dilution range\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eGeneral-purpose synthetic liquid feed\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eCheap and immediately available\u003c\/li\u003e\n\u003cli\u003eUsually no magnesium and few or no trace elements\u003c\/li\u003e\n\u003cli\u003eNo organic matter, no carbon contribution to soil biology\u003c\/li\u003e\n\u003cli\u003eSalt load builds in containers over a season of feeding\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eDry organic fertiliser\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSteady release over weeks, and builds soil over years\u003c\/li\u003e\n\u003cli\u003eSlow to respond when a plant needs feeding now\u003c\/li\u003e\n\u003cli\u003eHarder to apply evenly to established containers\u003c\/li\u003e\n\u003cli\u003eThe right base for the season, and this feed layers on top of it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eHow this fits a stage-feeding programme\u003c\/span\u003e\n\u003cp\u003eUse a rooting or phosphorus feed at establishment, 5-2-5 through the main vegetative period, then switch to \u003ca href=\"\/products\/organic-liquid-fertiliser-3-2-6\"\u003e\u003cstrong\u003eliquid 3-2-6\u003c\/strong\u003e\u003c\/a\u003e as flowering and fruiting begin. The three cover a full season without ever feeding a plant the wrong thing for the stage it is at.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eMade with organic ingredients, in small batches. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-lv-panel2\"\u003e\n\u003ch2\u003eThe science behind a 5-2-5 ratio\u003c\/h2\u003e\n\u003cp\u003eNPK ratios are marketing shorthand for something real: the relative demand a plant has for each nutrient at a given growth stage. During vegetative growth a plant is laying down protein and enzyme machinery, which takes nitrogen, and running the water and sugar transport to support it, which takes potassium. Phosphorus demand is real but far smaller by mass, because phosphorus goes into membranes and nucleic acids rather than bulk tissue (Marschner, 2012).\u003c\/p\u003e\n\u003cp class=\"drf-pullquote\"\u003eA ratio is not a recipe for a plant. It is a statement about which stage the plant is in.\u003c\/p\u003e\n\u003ch3\u003eWhat each element is doing at this stage\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eNitrogen, building the machinery\u003c\/h4\u003e\n\u003cp\u003eEvery protein and every chlorophyll molecule contains nitrogen. At 5% it is the dominant element by demand during vegetative growth, but held low enough that tissue stays firm rather than soft and aphid-prone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003ePotassium, running the machinery\u003c\/h4\u003e\n\u003cp\u003eMatched to nitrogen at 5%. Potassium regulates stomatal opening, activates more than sixty enzymes and drives sugar transport out of the leaf. Feeding nitrogen without matching potassium produces bulk without structure (Zörb et al., 2014).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003ePhosphorus, held deliberately low\u003c\/h4\u003e\n\u003cp\u003eAt 1.8%, enough for continuing root development and membrane synthesis without the surplus that suppresses mycorrhizal association. Heavy phosphate feeding reduces the fungal partnerships plants rely on for phosphorus foraging (Smith and Read, 2008).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eMagnesium, the chlorophyll atom\u003c\/h4\u003e\n\u003cp\u003eEvery chlorophyll molecule has a magnesium ion at its centre. Magnesium is also the nutrient most often displaced by heavy potassium feeding, because the two compete for the same uptake sites.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eTrace elements, the small things that stop everything\u003c\/h4\u003e\n\u003cp\u003eIron, manganese, zinc, boron, copper and molybdenum are needed in milligram quantities and bring growth to a halt when absent. Here they are drawn from plant material rather than mineral salts, and including them in the feed avoids the slow drift into deficiency that long container runs produce.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eCation competition, and why the ratio matters\u003c\/h3\u003e\n\u003cp\u003ePotassium, calcium and magnesium are all cations taken up through overlapping pathways. Push one hard and you suppress the others. This is real and well documented, but it does not support the older Base Cation Saturation Ratio theory, which held that soils should be balanced to fixed cation percentages. That framework has not survived testing. Sufficiency of each nutrient matters far more than the ratio between them (Kopittke and Menzies, 2007).\u003c\/p\u003e\n\u003cp\u003eThe practical version is simpler. Do not feed one cation hard without covering the others. Which is why magnesium is in this formulation rather than sold separately.\u003c\/p\u003e\n\u003ch3\u003eSolution rather than suspension\u003c\/h3\u003e\n\u003cp\u003eNutrients here are dissolved, not suspended. That has three consequences. Uptake is immediate, because roots and leaf cuticles absorb ions rather than particles. Nothing settles out in the bottle. And the same product can be used as a foliar spray, because foliar uptake happens through cuticular pores measured in nanometres, far too small for suspended mineral particles.\u003c\/p\u003e\n\u003ch3\u003eOrganic and mineral feeding read honestly\u003c\/h3\u003e\n\u003cp\u003eAcross 537 experiments in grasslands and croplands, organic fertilisation raised aboveground biomass by 56% against 42% for mineral fertilisation, and only the mineral treatments reduced plant diversity (Shi et al., 2024). A separate synthesis of 7,859 paired observations from 551 field experiments found fertiliser lifted crop yield by 30.9% and nutritional quality by 11.9%, with potassium, magnesium and micronutrients doing much of the quality work, and combined organic plus mineral inputs performing best of all (Ishfaq et al., 2023). Vegetables were the most responsive crop group in that dataset.\u003c\/p\u003e\n\u003cp\u003eThat last finding is the argument for this feed rather than a straight NPK. Potassium and magnesium together, with the micronutrients present rather than assumed. None of it makes a liquid feed a complete system on its own. It makes it a good partner to a dry organic base.\u003c\/p\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eReferences\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eMarschner, P. (ed.) (2012). \u003cem\u003eMarschner's Mineral Nutrition of Higher Plants\u003c\/em\u003e, 3rd edition. Academic Press.\u003c\/li\u003e\n\u003cli\u003eZörb, C., Senbayram, M. and Peiter, E. (2014). Potassium in agriculture, status and perspectives. \u003cem\u003eJournal of Plant Physiology\u003c\/em\u003e, 171(9), 656–669.\u003c\/li\u003e\n\u003cli\u003eSmith, S.E. and Read, D.J. (2008). \u003cem\u003eMycorrhizal Symbiosis\u003c\/em\u003e, 3rd edition. Academic Press.\u003c\/li\u003e\n\u003cli\u003eKopittke, P.M. and Menzies, N.W. (2007). A review of the use of the basic cation saturation ratio and the \"ideal\" soil. \u003cem\u003eSoil Science Society of America Journal\u003c\/em\u003e, 71(2), 259–265.\u003c\/li\u003e\n\u003cli\u003eShi, T-S., Collins, S.L., Yu, K., Peñuelas, J., Sardans, J., Li, H. and Ye, J-S. (2024). A global meta-analysis on the effects of organic and inorganic fertilization on grasslands and croplands. \u003cem\u003eNature Communications\u003c\/em\u003e, 15, 3411.\u003c\/li\u003e\n\u003cli\u003eIshfaq, M., Wang, Y., Xu, J., Hassan, M.U., Yuan, H., Liu, L. et al. (2023). Improvement of nutritional quality of food crops with fertilizer: a global meta-analysis. \u003cem\u003eAgronomy for Sustainable Development\u003c\/em\u003e, 43(6), 74.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-lv-panel3\"\u003e\n\u003ch2\u003eHow to use liquid 5-2-5 growth feed\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eBefore you start\u003c\/span\u003e\n\u003cp\u003eMeasure with a syringe or a small measuring cup rather than pouring by eye. The concentrate is acidic at pH 3.5 to 4.5, which keeps the nutrients soluble. Always dilute into water and never apply neat. Keep the cap tight between uses to stop moisture loss.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication rates\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRoot drench, standard feeding\u003c\/h4\u003e\n\u003cp class=\"drf-rate-meta\"\u003e\u003cstrong\u003eRate\u003c\/strong\u003e 3 – 6 ml per litre of water  |  \u003cstrong\u003eFrequency\u003c\/strong\u003e every watering\u003c\/p\u003e\n\u003cp\u003eDelivers roughly 150 to 300 mg\/l each of nitrogen and K₂O, which is standard horticultural feeding strength. Use the lower end for young plants and general border work, the upper end for established heavy feeders in full growth.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRoot drench, open ground and plot feeding\u003c\/h4\u003e\n\u003cp class=\"drf-rate-meta\"\u003e\u003cstrong\u003eRate\u003c\/strong\u003e 3 – 6 ml per litre of water  |  \u003cstrong\u003eFrequency\u003c\/strong\u003e weekly\u003c\/p\u003e\n\u003cp\u003eSame dilution, applied once a week rather than at every watering. Suits allotment beds, brassicas, leeks and anything growing in soil rather than compost.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFoliar spray\u003c\/h4\u003e\n\u003cp class=\"drf-rate-meta\"\u003e\u003cstrong\u003eRate\u003c\/strong\u003e 3 – 5 ml per litre of water  |  \u003cstrong\u003eFrequency\u003c\/strong\u003e 3 – 4 applications per season\u003c\/p\u003e\n\u003cp\u003eSpray to run-off in early morning or evening, never in strong sun. Useful when cold or waterlogged soil is limiting root uptake, or to correct a visible deficiency more quickly than a root feed manages.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eMixing\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003eHalf-fill the watering can or sprayer with water first.\u003c\/li\u003e\n\u003cli\u003eMeasure the dose with a syringe and add it to the water.\u003c\/li\u003e\n\u003cli\u003eTop up to full volume and stir or agitate briefly.\u003c\/li\u003e\n\u003cli\u003eApply the same day, because diluted feed is not worth storing.\u003c\/li\u003e\n\u003cli\u003eRinse equipment through with clean water afterwards.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eWhere it sits in the season\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eStage\u003c\/th\u003e\n\u003cth\u003eFeed\u003c\/th\u003e\n\u003cth\u003eRoughly when\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEstablishment and rooting\u003c\/td\u003e\n\u003ctd\u003eLiquid phosphorus feed\u003c\/td\u003e\n\u003ctd\u003eTransplanting, first 5 to 6 weeks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVegetative growth\u003c\/td\u003e\n\u003ctd\u003eThis feed, liquid 5-2-5\u003c\/td\u003e\n\u003ctd\u003eMay to mid-July for most crops\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFlowering and fruiting\u003c\/td\u003e\n\u003ctd\u003eLiquid 3-2-6 high-potash feed\u003c\/td\u003e\n\u003ctd\u003eFrom first flower or fruit set\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDeficiency correction\u003c\/td\u003e\n\u003ctd\u003eSingle-nutrient liquid feeds\u003c\/td\u003e\n\u003ctd\u003eAs and when symptoms show\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eFeeding through a dry spell\u003c\/span\u003e\n\u003cp\u003eNever feed a plant that is already wilting and dry. Water it plain first, let it recover for a few hours, then feed. Concentrated nutrient solution applied to a dry root ball draws water out of the roots rather than into them.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eStorage\u003c\/h3\u003e\n\u003cp\u003eCap tight to prevent moisture loss. Store dark and dry between 10 and 25 °C. Shelf life 18 months to 2 years. Do not let it freeze.\u003c\/p\u003e\n\u003ch3\u003eWhat to pair it with\u003c\/h3\u003e\n\u003cp\u003ePair this with the rest of the Dr Forest liquid range. \u003ca href=\"\/products\/liquid-seaweed-brix\"\u003e\u003cstrong\u003eLiquid Seaweed Biostimulant\u003c\/strong\u003e\u003c\/a\u003e covers alginates and natural growth promoters that a straight nutrient feed does not. \u003ca href=\"\/products\/liquid-gypsum\"\u003e\u003cstrong\u003eLiquid Gypsum\u003c\/strong\u003e\u003c\/a\u003e supplies calcium and sulphur, the two things most liquid feeds leave out. For a full-season plan, see the \u003ca href=\"\/pages\/living-soil-feeding-schedule\"\u003eDr Forest feeding programme\u003c\/a\u003e. If you are chasing down yellowing leaves rather than feeding to schedule, start with \u003ca href=\"\/blogs\/the-dr-forest-blog\/why-are-my-tomato-leaves-turning-yellow\"\u003ewhy tomato leaves turn yellow\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-lv-panel4\"\u003e\n\u003ch2\u003eLiquid 5-2-5 fertiliser, common questions\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq1\"\u003eWhat is a 5-2-5 fertiliser and what is it for?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is a balanced liquid feed with 5% nitrogen, 1.8% phosphorus as P₂O₅ and 5% potassium as K₂O, plus magnesium and trace elements. It is a growth-stage feed, used through the vegetative period when a plant is building leaf, stem and root, before flowering takes over.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq2\"\u003eWhy is the P shown as 2 when the analysis says 1.8%?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNPK figures on labels are conventionally rounded. The precise analysis is 1.8% P₂O₅, and we have printed that in the composition rather than only the rounded shorthand.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq3\"\u003eWhen should I switch to the 3-2-6 feed?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eAs flowering begins, or at first fruit set on fruiting crops. At that point nitrogen demand falls and potassium demand climbs sharply. Staying on a nitrogen-heavy feed too long pushes leaf at the expense of fruit and delays ripening.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq4\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq4\"\u003eCan I use it on everything?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt suits most things through the growing season: vegetables, salads, young shrubs, perennials, container displays in build-up. The exceptions are plants adapted to very low fertility, and anything already at the fruiting stage, which wants the higher-potash feed instead.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq5\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq5\"\u003eDoes it contain magnesium and trace elements?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Magnesium sits at the centre of every chlorophyll molecule and is the nutrient most often displaced by heavy potassium feeding. The trace elements are iron, manganese, zinc, boron, copper and molybdenum, included to prevent the slow drift into deficiency that long container runs produce.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq6\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq6\"\u003eAre the trace elements plant-derived too?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. The magnesium and the full micronutrient set are drawn from plant material rather than mineral salts or synthetic chelates. Most plant-based liquid feeds only manage it for the macronutrients and reach for mineral salts to fill in the micros.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq7\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq7\"\u003eCan I use it as a foliar spray?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes, at 3 to 5 ml per litre, three to four times a season. The nutrients are in true solution rather than suspension, so they pass through the leaf cuticle. Spray early morning or evening, never in strong sun.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq8\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq8\"\u003eWill it block a drip line or sprayer?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eNo. It is a clear solution with nothing suspended in it, so there is no sediment to settle out and nothing to clog a nozzle.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq9\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq9\"\u003eHow often should I feed?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIn containers and grow bags, every watering at 3 to 6 ml per litre. In open ground, weekly at the same dilution. Little and often beats occasional heavy doses, particularly in pots where nutrients flush through quickly.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq10\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq10\"\u003eCan I mix it with other Dr Forest liquids?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt combines well with seaweed and with the single-nutrient liquid feeds. Do not combine any phosphorus-containing feed with a calcium product in the same can, because the two precipitate on contact.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq11\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq11\"\u003eIs it safe to use around children, pets and wildlife?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eThe concentrate is acidic, so keep it capped, store it out of reach and wash your hands after handling. Once diluted and watered in, treated ground is fine for children, pets and wildlife to be around. There is no pesticide in it.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq12\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-lv-faq12\"\u003eIs this an organic fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is made with organic ingredients and is plant-derived throughout. Dr Forest does not hold organic certification, so we say made with organic ingredients rather than certified organic.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-lv-faq-paa1\" class=\"drf-faq-q\"\u003eLiquid or granular feed: which is better?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eThey do different jobs. A liquid like this one is already in solution, so the plant can take it up straight away, which makes it ideal for containers, grow bags and hungry crops in the growing season. The trade-off is that you feed little and often: at every watering in pots, or weekly in open ground, at 3 to 6 ml per litre. A granular feed lasts longer between feeds.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-lv-faq-paa2\" class=\"drf-faq-q\"\u003eHow do I apply it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eDilute 3 to 6 ml per litre of water and water it onto moist soil around the roots. If the pot has dried right out, water it first, let it recover for a few hours, then feed. Strong feed on a dry root ball draws water out of the roots. As a leaf spray, use 3 to 5 ml per litre in early morning or evening, never in strong sun.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-lv-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-lv-faq-paa3\" class=\"drf-faq-q\"\u003eHow long does it keep?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003e18 months to 2 years. Keep the cap tight and store it somewhere dark and dry between 10 and 25°C. Don't let it freeze.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════════════════════════════════════════════════════════════ --\u003e\n\u003c!-- SCHEMA REMOVED FROM THIS FILE.                                      --\u003e\n\u003c!-- Shopify strips \u003cscript\u003e tags from product descriptions, so the      --\u003e\n\u003c!-- old embedded JSON-LD was almost certainly doing nothing.            --\u003e\n\u003c!-- The corrected FAQPage + HowTo JSON-LD is in the companion file      --\u003e\n\u003c!-- liquid-5-2-5-schema.json and must be inserted via the theme         --\u003e\n\u003c!-- (product template) or a metafield, not pasted here.                 --\u003e\n\u003c!-- ═══════════════════════════════════════════════════════════════════ --\u003e","brand":"Dr Forest","offers":[{"title":"500ml","offer_id":58307100410230,"sku":"DF-LIQ525-500ML","price":12.99,"currency_code":"GBP","in_stock":true},{"title":"1 litre","offer_id":58307100442998,"sku":"DF-LIQ525-1L","price":21.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/03-dr-forest-liquid-fertiliser-5-2-5-balanced-benefits.png?v=1792171038"},{"product_id":"kieserite-magnesium-sulphate-fertiliser","title":"Kieserite | 25% MgO | Organic Magnesium Fertiliser","description":"\u003c!-- Dr Forest — Kieserite (Magnesium Sulphate Monohydrate) Shopify Product Page --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- Design System v1.0 · 4-tab layout · prefix \"ks\" · Shopify-safe, no JS --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn-dark); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 500; font-size: 1.35em; color: var(--drf-grn-dark); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; font-weight: 500; font-size: 0.85em; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-muted); margin: 1.2em 0 0.3em; }\n  .drf-wrap p { margin-bottom: 0.9em; }\n  .drf-wrap ul { padding-left: 1.2em; margin-bottom: 0.9em; }\n  .drf-wrap ul li { margin-bottom: 0.35em; }\n  .drf-wrap strong { font-weight: 500; color: var(--drf-grn-dark); }\n  .drf-wrap em { font-style: italic; color: var(--drf-muted); }\n  .drf-wrap a { color: var(--drf-grn); text-decoration: underline; text-underline-offset: 2px; }\n  .drf-wrap a:hover { color: var(--drf-gold); }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── PULL QUOTE ── *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: 1.25em; color: var(--drf-grn-dark); text-align: center; line-height: 1.45; padding: 1.1em 1em; margin: 1.4em 0; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); }\n\n  \/* ── BADGES ── *\/\n  .drf-badge-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 7px; margin: 0 0 12px; }\n  .drf-badge { padding: 9px 12px; border-radius: 0; font-size: 11px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; display: flex; align-items: center; justify-content: center; text-align: center; min-height: 36px; line-height: 1.3; }\n  .drf-badge-green { background: #eaf4ea; color: #2d6a2d; border: 1px solid #c0d8b0; }\n  .drf-badge-gold  { background: #fdf6e3; color: #8b6914; border: 1px solid #e0cc80; }\n  .drf-badge-dark  { background: #1c2b1a; color: #d4e4c8; border: 1px solid #2d6a2d; }\n\n  \/* ── STAT BOXES ── *\/\n  .drf-stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--drf-border); border: 1px solid var(--drf-border); margin: 1.2em 0; max-width: 100%; }\n  .drf-stat { background: var(--drf-white); border-top: 2px solid var(--drf-gold); padding: 0.7em 0.5em; text-align: center; }\n  .drf-stat-number { font-family: 'Cormorant Garamond', serif; font-size: 1.45em; font-weight: 400; color: var(--drf-grn-dark); line-height: 1.1; display: block; }\n  .drf-stat-label { font-size: 0.6em; font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase; color: var(--drf-gold); display: block; margin-top: 0.25em; }\n\n  \/* ── TABS ── *\/\n  .drf-tabs-wrap { max-width: 100%; overflow: hidden; }\n  .drf-tabs-wrap input[type=\"radio\"] { display: none; }\n  .drf-tab-labels { display: flex; align-items: stretch; border-bottom: 2px solid var(--drf-border); margin-bottom: 1.2em; }\n  .drf-tab-labels label { flex: 1 1 0; padding: 0.75em 0.4em; font-size: 0.82em; font-weight: 500; letter-spacing: 0.04em; text-transform: uppercase; color: #8b6914; background: var(--drf-gold-light); cursor: pointer; text-align: center; display: flex; align-items: center; justify-content: center; border-bottom: 3px solid var(--drf-gold); margin-bottom: -2px; transition: all 0.15s; }\n  .drf-tab-labels label:hover { color: var(--drf-grn-dark); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn-dark); }\n  .drf-panel { display: none; }\n  #drf-ks-tab1:checked ~ .drf-tab-labels label[for=\"drf-ks-tab1\"],\n  #drf-ks-tab2:checked ~ .drf-tab-labels label[for=\"drf-ks-tab2\"],\n  #drf-ks-tab3:checked ~ .drf-tab-labels label[for=\"drf-ks-tab3\"],\n  #drf-ks-tab4:checked ~ .drf-tab-labels label[for=\"drf-ks-tab4\"] { color: var(--drf-grn-dark); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn-dark); font-weight: 600; }\n  #drf-ks-tab1:checked ~ .drf-panels #drf-ks-panel1,\n  #drf-ks-tab2:checked ~ .drf-panels #drf-ks-panel2,\n  #drf-ks-tab3:checked ~ .drf-panels #drf-ks-panel3,\n  #drf-ks-tab4:checked ~ .drf-panels #drf-ks-panel4 { display: block; }\n\n  \/* ── CALLOUTS ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; border-radius: 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 1.2em 0; border-radius: 0; color: var(--drf-cream); }\n  .drf-callout-dark p { color: var(--drf-cream); margin-bottom: 0.9em; }\n  .drf-callout-dark p:last-child { margin-bottom: 0; }\n  .drf-callout-dark strong { color: var(--drf-gold); font-weight: 500; }\n  .drf-callout-dark a { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { font-size: 0.72em; font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-gold); margin-bottom: 0.4em; display: block; }\n\n  \/* ── MECHANISM CARDS ── *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; border-radius: 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn-dark); text-transform: none; letter-spacing: 0; font-size: 1em; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; border-radius: 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn-dark); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 500; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n  .drf-rate-cite { display: block; font-size: 0.78em; color: #6b7a70; font-style: italic; margin-top: 0.5em; }\n\n  \/* ── NUMBERED STEPS ── *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; border-radius: 0; background: var(--drf-grn-dark); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.9em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn-dark); }\n\n  \/* ── COMPARISON BOXES ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; border-radius: 0; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn-dark); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 500; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ ACCORDIONS ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 500; color: var(--drf-grn-dark); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border-radius: 0; border: 1px solid var(--drf-gold); background: var(--drf-white); display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '\\2212'; background: var(--drf-grn-dark); color: #fff; border-color: var(--drf-grn-dark); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFERENCES ── *\/\n  .drf-refs { font-size: 0.78em; color: #6b7a70; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n\n  \/* ── TABLES ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn-dark); color: #fff; padding: 0.6em 0.8em; text-align: left; font-weight: 500; font-size: 0.85em; letter-spacing: 0.06em; text-transform: uppercase; }\n  .drf-wrap table td { padding: 0.5em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: #f2f7f3; }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-ks-tabset\" id=\"drf-ks-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-ks-tabset\" id=\"drf-ks-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-ks-tabset\" id=\"drf-ks-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-ks-tabset\" id=\"drf-ks-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-ks-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-ks-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-ks-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-ks-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003c!-- ═══════════ TAB 1: OVERVIEW ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ks-panel1\"\u003e\n\u003ch2\u003eKieserite fertiliser — water-soluble magnesium and sulphur for plants\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003e25% MgO · 50% SO₃\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eFor Plants \u0026amp; Soil\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003epH Neutral\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eChloride Free\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eFully Water-Soluble\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eSingle Ingredient\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eKieserite is naturally occurring magnesium sulphate monohydrate (MgSO₄·H₂O), a mined mineral supplying 25% MgO and 50% SO₃ in the sulphate form plant roots absorb directly.\u003c\/strong\u003e It is fully water-soluble at around 393 g per litre, so the magnesium is available to the plant as soon as the granules wet — no waiting on soil acidity, soil bacteria or a pH change to unlock it. That is the difference that matters, because the cheap alternatives are barely soluble at all. Dr Forest supplies it as a single-ingredient granule: one mineral, nothing blended in, nothing added.\u003c\/p\u003e\n\u003cdiv class=\"drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eGarden use only\u003c\/span\u003e\n\u003cp\u003eThis is a garden fertiliser for plants and soil. It is not a human supplement, not a bath salt, and not food grade. Do not ingest. If you want a magnesium supplement or Epsom bathing salts, this is the wrong product.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003eAgainst Epsom salts the difference is concentration and format, not speed. Both are soluble sulphates and both act fast. Kieserite is the monohydrate at 15% magnesium; Epsom salt is the heptahydrate at 9.8%, so you carry and spread noticeably less product for the same dose. Kieserite comes as a granule you broadcast over soil, where Epsom salt is a fine crystal that suits being dissolved and sprayed. Use Epsom on the leaf, kieserite on the ground.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e25%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eMgO\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e50%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSO₃\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e393 g\/L\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eSolubility\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e0%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eChloride\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat gardeners use kieserite for\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eInterveinal yellowing\u003c\/strong\u003e — yellow between the veins on older, lower leaves while the veins stay green. The signature magnesium deficiency in tomatoes, roses, apples and vines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTomatoes in growing bags and borders\u003c\/strong\u003e — heavy potash feeding suppresses magnesium uptake. Kieserite restores the balance without adding more potassium.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePotatoes\u003c\/strong\u003e — one of the most magnesium-hungry crops on the allotment, and among the first to show it in the haulm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRoses and flowering shrubs\u003c\/strong\u003e — magnesium sits at the centre of every chlorophyll molecule, so leaf colour and flower quality both depend on it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop fruit and soft fruit\u003c\/strong\u003e — apples, pears, currants and raspberries on light soils lose magnesium to leaching over winter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEricaceous plants\u003c\/strong\u003e — rhododendron, camellia, azalea and blueberry need magnesium but cannot take dolomitic lime, which would push the pH up.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLawns\u003c\/strong\u003e — magnesium deepens the green without forcing the soft, disease-prone growth a nitrogen-only feed gives you.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSulphur correction\u003c\/strong\u003e — UK soils have received far less atmospheric sulphur since coal burning declined. Brassicas, onions and leeks notice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver-limed beds\u003c\/strong\u003e — excess calcium suppresses magnesium uptake. Kieserite corrects it without raising pH further.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo-dig beds\u003c\/strong\u003e — broadcast over the mulch and water in. No cultivation needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eKieserite compared with the alternatives\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eKieserite granules — soluble sulphate, soil-applied\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e15% magnesium, half as much again per kilo as Epsom salt\u003c\/li\u003e\n\u003cli\u003e393 g\/L soluble, so the magnesium is available as soon as it wets\u003c\/li\u003e\n\u003cli\u003eWorks at any soil pH, including ericaceous beds and acid-loving fruit\u003c\/li\u003e\n\u003cli\u003eCarries 20% sulphur alongside the magnesium\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eEpsom salts — soluble sulphate, foliar-first\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e9.8% magnesium, so you spread more product for the same dose\u003c\/li\u003e\n\u003cli\u003e710 g\/L soluble — also fast, and better suited to a spray tank\u003c\/li\u003e\n\u003cli\u003eFine crystal rather than a granule, so it spreads less evenly on soil\u003c\/li\u003e\n\u003cli\u003eThe right tool for a foliar correction on a plant already yellowing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eMagnesium oxide and dolomitic lime — barely soluble\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMagnesium oxide dissolves at 0.006 g\/L, dolomite little better\u003c\/li\u003e\n\u003cli\u003eReleases only as soil acid attacks it, so it stalls at pH 7 and above\u003c\/li\u003e\n\u003cli\u003eDolomite raises pH, ruling it out on blueberries, azaleas and camellias\u003c\/li\u003e\n\u003cli\u003eMonths to respond, and often no response at all on alkaline ground\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eMagnesium sits at the centre of the chlorophyll molecule. Take it away and the leaf cannot build sugar, however much nitrogen you feed it.\u003c\/div\u003e\n\u003ch3\u003eTypical analysis\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium oxide (MgO)\u003c\/td\u003e\n\u003ctd\u003e25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium (elemental Mg)\u003c\/td\u003e\n\u003ctd\u003e15%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSulphur trioxide (SO₃)\u003c\/td\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSulphur (elemental S)\u003c\/td\u003e\n\u003ctd\u003e20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChloride\u003c\/td\u003e\n\u003ctd\u003eNil\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolubility in water\u003c\/td\u003e\n\u003ctd\u003eApprox. 393 g\/L — fully soluble\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003epH in solution\u003c\/td\u003e\n\u003ctd\u003eApprox. 7.0 (neutral)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForm\u003c\/td\u003e\n\u003ctd\u003eGranular, magnesium sulphate monohydrate MgSO₄·H₂O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIngredients\u003c\/td\u003e\n\u003ctd\u003eKieserite. Nothing else.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eOne ingredient, screened and graded, nothing added. Safe around children, pets and bees once watered in. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════ TAB 2: THE SCIENCE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ks-panel2\"\u003e\n\u003ch2\u003eWhy magnesium is the nutrient most UK gardens are quietly short of\u003c\/h2\u003e\n\u003ch3\u003eThe chlorophyll problem\u003c\/h3\u003e\n\u003cp\u003eEvery chlorophyll molecule holds a single magnesium ion at its centre. Between 15 and 35% of the magnesium in a leaf is committed to chlorophyll; the rest activates enzymes and stabilises ribosomes in the cytoplasm (Marschner, 2012). When supply runs short, the plant strips magnesium out of its oldest leaves and moves it to the growing tip. That is why deficiency shows as yellowing between the veins on the \u003cem\u003elower\u003c\/em\u003e leaves first while new growth still looks healthy.\u003c\/p\u003e\n\u003cp\u003eThe damage starts before the yellowing does. Cakmak and Kirkby (2008) showed that magnesium shortage blocks sugar export from the leaf well before any visible symptom appears. Sugars accumulate, photosynthesis backs up, and surplus light energy generates reactive oxygen species that bleach the tissue. A plant can be losing yield for weeks while still looking green.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eHow magnesium behaves in soil\u003c\/h3\u003e\n\u003cp\u003eMagnesium is a divalent cation held on clay and organic matter, but it binds more weakly than calcium and carries a larger hydration shell, so it sits further from the exchange surface. Gransee and Führs (2013) identify this as the reason magnesium leaches more readily than any other major cation. On sandy or free-draining ground, a wet UK winter strips a meaningful fraction of exchangeable magnesium out of the root zone.\u003c\/p\u003e\n\u003cp\u003eUptake is competitive too. Potassium, calcium and ammonium all compete with magnesium at the root surface, and high concentrations of any of them suppress it (Senbayram et al., 2015). This is the trap most tomato growers fall into: a summer of high-potash liquid feed drives magnesium deficiency in a soil that has plenty of magnesium in it.\u003c\/p\u003e\n\u003ch3\u003eMechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eChlorophyll assembly\u003c\/h4\u003e\n\u003cp\u003eMagnesium chelatase inserts magnesium into the protoporphyrin ring, the committed step of chlorophyll biosynthesis. Without enough magnesium the pathway stalls and the leaf cannot build the pigment, no matter how much nitrogen is available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003ePhloem loading and sugar export\u003c\/h4\u003e\n\u003cp\u003eSucrose export runs on a proton gradient maintained by magnesium-activated H⁺-ATPase. Cakmak and Kirkby (2008) showed magnesium-deficient plants accumulating carbohydrate in the source leaf while roots and fruit are starved. Roots shrink first, which then worsens uptake of everything else.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eEnzyme activation and ATP\u003c\/h4\u003e\n\u003cp\u003eATP is biologically active as the Mg-ATP complex. Every kinase, every phosphatase, every ATP-spending step of the Calvin cycle needs magnesium as the counter-ion. Tränkner et al. (2018) place magnesium alongside potassium as a co-limiting factor for photosynthetic efficiency for exactly this reason.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003ePhotoprotection\u003c\/h4\u003e\n\u003cp\u003eA leaf that cannot export sugar still absorbs light. The surplus energy produces reactive oxygen species, and magnesium-deficient leaves are markedly more prone to photooxidative damage in high light. Greenhouse tomatoes and south-facing rose beds show symptoms first in a bright summer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eSulphate for protein synthesis\u003c\/h4\u003e\n\u003cp\u003eThe 20% sulphur arrives already as sulphate, the form roots absorb. Sulphur builds cysteine and methionine, and sits at the heart of the glucosinolates that give brassicas and alliums their flavour and pungency. Guo et al. (2016) note that magnesium and sulphur deficiency now frequently occur together in intensively cropped soils.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003eSolubility decides everything\u003c\/h4\u003e\n\u003cp\u003eOnly water-soluble magnesium can be absorbed directly by the root. Kieserite dissolves at roughly 393 g\/L; magnesium oxide manages 0.006 g\/L and magnesium carbonate 0.106 g\/L. That is a gap of four to five orders of magnitude, and it is why a bag of magnesium oxide can sit in a neutral soil for a season and do almost nothing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eKieserite against magnesium oxide\u003c\/h3\u003e\n\u003cp\u003eOrlovius and McHoul (2015) compared kieserite with magnesium oxide on potato and sugar beet across multiple sites. Kieserite gave consistently higher leaf magnesium concentrations, because sulphate magnesium is available to the plant straight away while oxide and carbonate forms depend on soil acidity to release them. On neutral or alkaline ground the oxide barely moves at all.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMagnesium source\u003c\/th\u003e\n\u003cth\u003eCompound\u003c\/th\u003e\n\u003cth\u003eSolubility in water\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEpsom salt\u003c\/td\u003e\n\u003ctd\u003eMgSO₄·7H₂O\u003c\/td\u003e\n\u003ctd\u003e710 g\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKieserite\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMgSO₄·H₂O\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e393 g\/L\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium carbonate\u003c\/td\u003e\n\u003ctd\u003eMgCO₃\u003c\/td\u003e\n\u003ctd\u003e0.106 g\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium hydroxide\u003c\/td\u003e\n\u003ctd\u003eMg(OH)₂\u003c\/td\u003e\n\u003ctd\u003e0.009 g\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMagnesium oxide\u003c\/td\u003e\n\u003ctd\u003eMgO\u003c\/td\u003e\n\u003ctd\u003e0.006 g\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eBoth sulphates are fast. Everything below them on that table is effectively locked up until the soil is acid enough to dissolve it, which is why a magnesium problem on a chalky or limed garden does not respond to dolomite at all.\u003c\/p\u003e\n\u003ch3\u003eWhere magnesium fits with calcium\u003c\/h3\u003e\n\u003cp\u003eMagnesium and calcium compete, so correcting one without thinking about the other creates the opposite problem. On a heavy soil that needs both, pair kieserite with \u003ca href=\"\/products\/granulated-gypsum-clay-breaker\"\u003egranulated gypsum\u003c\/a\u003e — calcium sulphate supplies calcium and sulphur without shifting pH, which lets you lift both cations while keeping the ratio sane. The historic 5:1 calcium-to-magnesium \"ideal ratio\" from the Albrecht school has not held up: Kopittke and Menzies (2007) reviewed the evidence and found no consistent yield benefit from targeting a fixed ratio. Feed to the deficiency, not to a ratio.\u003c\/p\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific references\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eCakmak, I. \u0026amp; Kirkby, E.A. (2008). Role of magnesium in carbon partitioning and alleviating photooxidative damage. \u003cem\u003ePhysiologia Plantarum\u003c\/em\u003e, 133(4), 692–704.\u003c\/li\u003e\n\u003cli\u003eGransee, A. \u0026amp; Führs, H. (2013). Magnesium mobility in soils as a challenge for soil and plant analysis, magnesium fertilization and root uptake under adverse growth conditions. \u003cem\u003ePlant and Soil\u003c\/em\u003e, 368, 5–21.\u003c\/li\u003e\n\u003cli\u003eSenbayram, M., Gransee, A., Wahle, V. \u0026amp; Thiel, H. (2015). Role of magnesium fertilisers in agriculture: plant–soil continuum. \u003cem\u003eCrop and Pasture Science\u003c\/em\u003e, 66(12), 1219–1229.\u003c\/li\u003e\n\u003cli\u003eGuo, W., Nazim, H., Liang, Z. \u0026amp; Yang, D. (2016). Magnesium deficiency in plants: an urgent problem. \u003cem\u003eThe Crop Journal\u003c\/em\u003e, 4(2), 83–91.\u003c\/li\u003e\n\u003cli\u003eTränkner, M., Tavakol, E. \u0026amp; Jákli, B. (2018). Functioning of potassium and magnesium in photosynthesis, photosynthate translocation and photoprotection. \u003cem\u003ePhysiologia Plantarum\u003c\/em\u003e, 163(3), 414–431.\u003c\/li\u003e\n\u003cli\u003eHermans, C. \u0026amp; Verbruggen, N. (2005). Physiological characterization of Mg deficiency in \u003cem\u003eArabidopsis thaliana\u003c\/em\u003e. \u003cem\u003eJournal of Experimental Botany\u003c\/em\u003e, 56(418), 2153–2161.\u003c\/li\u003e\n\u003cli\u003eGrzebisz, W. (2013). Crop response to magnesium fertilization as affected by nitrogen supply. \u003cem\u003ePlant and Soil\u003c\/em\u003e, 368, 23–39.\u003c\/li\u003e\n\u003cli\u003eOrlovius, K. \u0026amp; McHoul, J. (2015). Effect of two magnesium fertilizers on leaf magnesium concentration, yield, and quality of potato and sugar beet. \u003cem\u003eJournal of Plant Nutrition\u003c\/em\u003e, 38(13), 2044–2054.\u003c\/li\u003e\n\u003cli\u003eKopittke, P.M. \u0026amp; Menzies, N.W. (2007). A review of the use of the basic cation saturation ratio and the \"ideal\" soil. \u003cem\u003eSoil Science Society of America Journal\u003c\/em\u003e, 71(2), 259–265.\u003c\/li\u003e\n\u003cli\u003eDadebo, M.M., Tan, Q., Wu, S., Sun, X., Li, M., Hashem, I.A. \u0026amp; Hu, C. (2026). Foliar magnesium application enhances fruit external and interior quality and nitrogen use efficiency of tomato under high nitrogen supply. \u003cem\u003eAgronomy\u003c\/em\u003e, 16(13), 1218.\u003c\/li\u003e\n\u003cli\u003eBai, R., Liu, H., Liu, Y. \u0026amp; Yong, J.W.H. (2024). Effects of foliar application of magnesium fertilizer on photosynthesis and growth in grapes. \u003cem\u003eAgronomy\u003c\/em\u003e, 14(11), 2659.\u003c\/li\u003e\n\u003cli\u003eShaddox, T. \u0026amp; Munshaw, G. (2019). \u003cem\u003eMagnesium for Kentucky turfgrasses\u003c\/em\u003e. University of Kentucky Cooperative Extension Service, AGR-243.\u003c\/li\u003e\n\u003cli\u003eMarschner, P. (ed.) (2012). \u003cem\u003eMarschner's Mineral Nutrition of Higher Plants\u003c\/em\u003e, 3rd edition. Academic Press, London.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════ TAB 3: HOW TO USE ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ks-panel3\"\u003e\n\u003ch2\u003eHow to use kieserite — directions for use by crop\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eMeasuring and moisture\u003c\/span\u003e\n\u003cp\u003eA level tablespoon holds roughly 15 g, a level teaspoon about 5 g. Kieserite needs soil moisture to dissolve, so scatter it on damp ground and water it in, or apply just before rain. Broadcast onto bone-dry soil in July it will sit on the surface doing nothing until the weather breaks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eMore is not better\u003c\/span\u003e\n\u003cp\u003eMagnesium competes with calcium and potassium at the root. Overloading a soil with magnesium suppresses calcium uptake, which brings blossom end rot in tomatoes and bitter pit in apples, and it degrades the crumb structure of clay soils. \u003cstrong\u003eDo not exceed 30 g per square metre in a season\u003c\/strong\u003e, and skip the application entirely if a soil test shows a Magnesium Index of 3 or above. If leaves are yellow but the veins are yellow too, the problem is nitrogen or iron, not magnesium.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication rates by crop\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTomatoes, peppers and aubergines\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 20 g\/m² before planting  |  \u003cstrong\u003eTop-up:\u003c\/strong\u003e 10 g\/m² at first truss\u003c\/div\u003e\n\u003cp\u003eThe classic case. A summer of high-potash tomato feed suppresses magnesium uptake and the lower leaves yellow between the veins by midsummer. Work 20 g\/m² into border soil before planting, then scatter a second 10 g\/m² and water it in as the first truss sets. In pots and growing bags, mix 3–5 g per 10 litres of compost before planting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003ePotatoes\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 25–30 g\/m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e In the trench at planting\u003c\/div\u003e\n\u003cp\u003ePotatoes remove more magnesium than almost anything else on the plot, and the haulm shows it early: interveinal yellowing on lower leaves spreading upward as tubers bulk. Scatter along the trench and cover. Use the upper end of the range on light sandy soils.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eRate scaled from field trials on potato and sugar beet, Orlovius \u0026amp; McHoul (2015), J. Plant Nutrition 38(13): 2044–2054.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRoses and flowering shrubs\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 20 g\/m² in spring  |  \u003cstrong\u003eSecond dose:\u003c\/strong\u003e 15 g\/m² after the first flush\u003c\/div\u003e\n\u003cp\u003eApply in March as growth breaks, spread across the root zone rather than at the stem, and water in. A second dose after the first flush carries colour through the later blooms. Roses on chalk or heavily limed beds respond particularly well, because the excess calcium has been suppressing magnesium uptake.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eApples, pears and top fruit\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 25 g\/m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Late winter to early spring, annually\u003c\/div\u003e\n\u003cp\u003eSpread evenly under the canopy out to the drip line, never in a ring at the trunk. Magnesium deficiency in apples shows as interveinal yellowing followed by early leaf drop from the base of the shoot, and it is worse in a heavy cropping year. Repeat annually on sandy orchard soils.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eStrawberries, raspberries and currants\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 15–20 g\/m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Early spring, before flowering\u003c\/div\u003e\n\u003cp\u003eSoft fruit on light soil loses magnesium over winter. Apply along the row in March and water in. For strawberries, apply after cutting back old foliage rather than during fruiting. Blackcurrants are especially prone and benefit from the sulphur as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBrassicas, onions and leeks\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 15 g\/m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Worked in before planting out\u003c\/div\u003e\n\u003cp\u003eThis group is fed as much for the sulphur as the magnesium. Sulphur builds the compounds responsible for flavour and pungency in cabbage, sprouts, onions and leeks. Rake into the top 10 cm of the bed a week or two before transplanting.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eGrapes and vines\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 20–25 g\/m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Early spring, before bud break\u003c\/div\u003e\n\u003cp\u003eMagnesium deficiency in vines is common and unmistakable: yellowing between the veins on basal leaves, often with a reddish margin on dark varieties, worsening as bunches fill. Apply around the base out to the spread of the canopy and water in well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRhododendron, camellia, azalea and blueberry\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 15 g\/m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Spring, once a year\u003c\/div\u003e\n\u003cp\u003eThese plants need magnesium but cannot tolerate the pH lift from dolomitic lime, which makes kieserite the sensible route for ericaceous beds. Scatter over the mulch, water in, and top the mulch back up.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawns — dry granules\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 15–20 g\/m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Spring or early autumn\u003c\/div\u003e\n\u003cp\u003eMagnesium deepens turf colour without forcing the lush, soft growth a straight nitrogen feed produces. Apply to damp grass on a still day, \u003cem\u003ewater in properly\u003c\/em\u003e, and leave the mower for two or three days. Granules left sitting dry on turf in sun can mark the leaf. Useful on sandy lawns that have been sanded and top-dressed repeatedly, where magnesium leaches out fastest. Turf research puts the useful range at 0.5–1 lb magnesium per 1,000 sq ft, which works out at 16–32 g\/m² of kieserite; stay at the lower end unless a soil test has confirmed a shortage, and never exceed 30 g\/m² in a season.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eShaddox \u0026amp; Munshaw (2019), Magnesium for Kentucky turfgrasses, University of Kentucky Cooperative Extension AGR-243.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawns — liquid feed\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eLight top-up:\u003c\/strong\u003e 3 g\/L at 1 L\/m², every 3–4 weeks  |  \u003cstrong\u003eFull correction:\u003c\/strong\u003e 3–4 g\/L at 5 L\/m², once in spring\u003c\/div\u003e\n\u003cp\u003eLiquid suits turf better than most things, because you cannot rake granules into an established lawn and anything left on the surface has to wait for rain. Dissolve, strain, and apply through a watering can with a fine rose or a hose-end feeder, then water the lawn afterwards to move it off the leaf and into the root zone.\u003c\/p\u003e\n\u003cp\u003eThe light top-up delivers about 3 g\/m² a pass and matches the foliar rate in the turf literature. Published turf foliar guidance is written for low-volume professional sprayers and works out near 79 g\/L, which will scorch a domestic lawn applied through a can — the rates here deliver the same magnesium per square metre at a concentration turf tolerates. Do not go above 13 g\/L on grass.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eConverted from Shaddox \u0026amp; Munshaw (2019), AGR-243 — foliar 0.1 lb Mg per 1,000 sq ft.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eMagnesium is not the lawn greener you may be thinking of\u003c\/span\u003e\n\u003cp\u003eThe product that turns a lawn dark green within days and blackens moss is \u003cstrong\u003eiron sulphate\u003c\/strong\u003e, not magnesium sulphate. They are different minerals doing different jobs, and they are constantly confused. Magnesium builds chlorophyll over three to six weeks and does nothing to moss. If your lawn is pale because it is short of magnesium — older leaves yellowing between the veins, worst on sand, worst after a hard winter — kieserite is the right answer. If you want an instant colour hit or you are fighting moss, buy iron and leave this on the shelf.\u003c\/p\u003e\n\u003cp\u003eWorth testing before you treat. Turf guidance says apply magnesium when a soil test reads at or below 20 ppm; in UK terms that is Magnesium Index 0 or 1. Lawns that have been limed recently, or fed heavily on autumn potash, are the likeliest to be genuinely short, because calcium and potassium both displace magnesium from the soil's exchange sites.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eConifers and evergreen hedging\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 20–25 g\/m²  |  \u003cstrong\u003eTiming:\u003c\/strong\u003e Early spring\u003c\/div\u003e\n\u003cp\u003eBronzing and yellowing of older needles on the inside of the plant is a classic magnesium picture in conifer hedging, particularly on hedges that have never been fed. Apply along both sides of the hedge line out to the spread of the branches.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eGeneral soil correction — beds, borders and no-dig plots\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 15–25 g\/m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once a year, spring\u003c\/div\u003e\n\u003cp\u003eAt Magnesium Index 0 or 1, use 25 g\/m². At Index 2, use 15 g\/m² as maintenance. At Index 3 or above, do not apply. On sandy soils an annual application is normal; on heavy clay every second or third year is usually enough. For no-dig beds, broadcast over the mulch and water in — no cultivation needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eUsing kieserite as a liquid feed\u003c\/h3\u003e\n\u003cp\u003eThe granules are made for broadcasting, but the mineral itself is fully soluble, so you can dissolve it and water it on or spray it. Two things to understand before you do.\u003c\/p\u003e\n\u003cp\u003eFirst, dissolving takes time. A 2–5mm granule in cold, still water needs \u003cstrong\u003etwo to four hours\u003c\/strong\u003e to go into solution. That is granule size and surface area, not low solubility — kieserite saturates at around 393 g per litre, and the 13 g\/L foliar rate below is barely 3% of that. Warm water and a stir at the start and end cut the time considerably.\u003c\/p\u003e\n\u003cp\u003eSecond, this is mined rock rather than a refined laboratory salt, so a little insoluble grit is normal. Let the solution stand, then decant the clear liquid or strain it through muslin before it goes anywhere near a sprayer.\u003c\/p\u003e\n\u003cdiv class=\"drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eNever tank-mix with a calcium feed\u003c\/span\u003e\n\u003cp\u003eMagnesium sulphate solution plus any soluble calcium — gypsum, calcium nitrate, an amino-chelated calcium — precipitates calcium sulphate on the spot. Calcium sulphate dissolves at roughly 2.4 g per litre against kieserite's 393, so it drops out as a white sludge that blocks nozzles and takes both nutrients out of solution with it. \u003cstrong\u003eMix and apply them separately.\u003c\/strong\u003e Applied to soil on different days they work together perfectly well; in the same tank they cancel each other out.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch4\u003eHow to make it up\u003c\/h4\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeigh into a bucket.\u003c\/strong\u003e Work out the total volume you need first, then the weight from the rate cards below. A level tablespoon is roughly 15 g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStart with warm water.\u003c\/strong\u003e Add about a third of the final volume, hand-warm rather than hot, and stir hard for a minute.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeave it two to four hours.\u003c\/strong\u003e Cover it and walk away. Stir again when you come back — the last of the granules go quickly once the water is saturated near the bottom.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTop up to volume and settle.\u003c\/strong\u003e Add the remaining cold water, then leave it twenty minutes for any grit to drop out.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDecant or strain.\u003c\/strong\u003e Pour off the clear liquid, or strain through muslin. Essential for a sprayer, optional for a watering can. Use it within a day or two.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4\u003eWorking out the rate\u003c\/h4\u003e\n\u003cp\u003eMost published magnesium spray guidance is written for Epsom salt. Kieserite carries about half as much magnesium again per gram, so use roughly two-thirds the Epsom weight for the same dose.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePublished Epsom rate\u003c\/th\u003e\n\u003cth\u003eEpsom\u003c\/th\u003e\n\u003cth\u003eMagnesium delivered\u003c\/th\u003e\n\u003cth\u003eKieserite equivalent\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e0.5% solution\u003c\/td\u003e\n\u003ctd\u003e5 g\/L\u003c\/td\u003e\n\u003ctd\u003e0.49 g Mg\/L\u003c\/td\u003e\n\u003ctd\u003e3 g\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1% solution\u003c\/td\u003e\n\u003ctd\u003e10 g\/L\u003c\/td\u003e\n\u003ctd\u003e0.99 g Mg\/L\u003c\/td\u003e\n\u003ctd\u003e6.5 g\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cstrong\u003e2% solution\u003c\/strong\u003e (standard horticultural foliar)\u003c\/td\u003e\n\u003ctd\u003e20 g\/L\u003c\/td\u003e\n\u003ctd\u003e1.97 g Mg\/L\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e13 g\/L\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5% solution (field-scale, not for gardens)\u003c\/td\u003e\n\u003ctd\u003e50 g\/L\u003c\/td\u003e\n\u003ctd\u003e4.93 g Mg\/L\u003c\/td\u003e\n\u003ctd\u003e33 g\/L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFoliar spray — general correction\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 6.5 g\/L to start, 13 g\/L maximum  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 2–3 weeks, up to three sprays\u003c\/div\u003e\n\u003cp\u003eTwo per cent Epsom solution is the long-standing horticultural foliar rate, and 13 g\/L of kieserite matches it. Start at 6.5 g\/L on anything you have not sprayed before and test a few leaves first. Spray early morning or evening, never in strong sun, and wet the undersides as well as the tops — most magnesium goes in through the lower leaf surface.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003e2% w\/v magnesium sulphate, three applications: Dadebo et al. (2026), Agronomy 16(13): 1218.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFoliar spray — tomatoes and peppers\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 13 g\/L  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Three sprays through the growing period\u003c\/div\u003e\n\u003cp\u003eThe tomato trial behind this rate applied 2% magnesium sulphate three times during vegetative growth and recorded gains in fruit yield, vitamin C, titratable acidity and colour alongside better nitrogen use. Useful as a rescue on plants already yellowing between the veins, where the soil correction will take too long to save the current crop.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eDadebo et al. (2026), Agronomy 16(13): 1218.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFoliar spray — apples, pears and top fruit\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 13 g\/L  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e From petal fall, repeat 2–3 times at 2–3 week intervals\u003c\/div\u003e\n\u003cp\u003eTree fruit guidance puts Epsom at 2 kg per 100 litres, which is the same 2% solution. Start once the leaves are properly developed or at petal fall, and repeat where symptoms are already showing. Soil correction still does the long-term work; the spray buys you this season's crop.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eBC Tree Fruit Production Guide, magnesium section — 2 kg magnesium sulphate per 100 L.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFoliar spray — grapes and vines\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 0.3–0.5 g\/L  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Up to four times during fruit fill\u003c\/div\u003e\n\u003cp\u003eGo far lighter here than anywhere else. The vine trial that measured this found the response peaked at 2.14 mM and fell away above it — the equivalent of about 0.35 g of kieserite per litre. Spraying vines at the tomato rate during fruit fill overshoots the optimum rather than improving on it. Late afternoon on a dry day.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eBai, Liu, Liu \u0026amp; Yong (2024), Agronomy 14(11): 2659 — optimum 2.14 mM MgSO₄·7H₂O.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSoil drench — beds and borders\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 3–5 g\/L applied at 5 L\/m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once, in spring\u003c\/div\u003e\n\u003cp\u003eThis is the dry soil rate delivered in water rather than a different dose. Four grams per litre over five litres per square metre puts down 20 g\/m², exactly the general bed rate. Use it where you want the magnesium down at root depth immediately, or on a no-dig bed where you would rather not have granules sitting on the mulch. The seasonal ceiling of 30 g\/m² is the same whichever way you apply it.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSoil drench — pots, containers and growing bags\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–2 g\/L  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Monthly through the growing season\u003c\/div\u003e\n\u003cp\u003eWater it on in place of one normal watering, enough to wet the whole rootball and just start to run from the base. One gram per litre monthly through a season lands close to the 3–5 g per 10 litres you would have mixed into the compost at potting. Skip it if the feed you are already using declares magnesium.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eDissolving does not change the total\u003c\/span\u003e\n\u003cp\u003eA litre of solution is a delivery method, not an extra dose. Whatever goes on as liquid counts towards the same 30 g per square metre seasonal ceiling as the dry granules, and the same rule applies about not applying at all above Magnesium Index 3. Foliar sprays are the one exception worth noting — they bypass the soil entirely, so they correct the plant without loading the ground, which is exactly why they suit a mid-season rescue.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eOn fruit trees and soft fruit\u003c\/h3\u003e\n\u003cp\u003eOn fruit, magnesium shortage shows as yellowing, then brown blotches, between the veins of the older leaves, often from midsummer. It's common on light, sandy or acid soils, and wherever a lot of potash has gone on. Kieserite corrects it without changing your soil's pH, so it's safe around blueberries.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhen:\u003c\/strong\u003e once a year in late winter or early spring (February–March), before flowering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow:\u003c\/strong\u003e scatter it evenly over the ground under the branches, out to the branch tips, or along the row, then water it in. A level tablespoon holds about 15 g.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eApples, pears, plums, cherries:\u003c\/strong\u003e 25 g per m² (20 g if a soil test shows magnesium Index 2).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRaspberries, blackberries, currants, gooseberries, strawberries:\u003c\/strong\u003e 15–20 g per m².\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlueberries:\u003c\/strong\u003e 15 g per m². Kieserite doesn't raise pH. Never use dolomite lime on blueberries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDon't go above 30 g per m² in a season.\u003c\/strong\u003e Skip it altogether if a soil test shows magnesium at Index 3 or above.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlanting new fruit on soil tested low in magnesium (Index 0–1):\u003c\/strong\u003e fork 30 g\/m² through the bed before planting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick fix if you see symptoms in summer:\u003c\/strong\u003e dissolve 13 g in a litre of water (stir well; it can take a while to dissolve fully). Spray the leaves in the evening or on a dull day, 2–3 times, two weeks apart. Sprays green the leaves up quickly, but the spring soil dressing is what fixes the problem for next year.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeep potash and magnesium in balance.\u003c\/strong\u003e Heavy potash feeding makes magnesium shortage more likely, which is why Kieserite pairs well with Sulphate of Potash.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApples prone to bitter pit\u003c\/strong\u003e (Bramley and Cox, for example): only add magnesium where it's actually short. Extra magnesium in the fruit can add to bitter pit when calcium is low.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFruit in pots:\u003c\/strong\u003e mix 3–5 g per 10 litres of compost at potting. If symptoms appear, water with 1 g per litre once a month from May to July.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eStep-by-step application\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the symptom first.\u003c\/strong\u003e Magnesium deficiency yellows the tissue \u003cem\u003ebetween\u003c\/em\u003e the veins while the veins stay green, and it starts on the oldest leaves. If the whole leaf is pale, or new growth is affected first, look at nitrogen or iron instead. Our guide to \u003ca href=\"\/blogs\/the-dr-forest-blog\/why-are-my-tomato-leaves-turning-yellow\"\u003eyellow leaves on tomato plants\u003c\/a\u003e walks through the patterns.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeigh it rather than guessing.\u003c\/strong\u003e Twenty grams per square metre is roughly a heaped tablespoon — far less than most people scatter by eye.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpread evenly on moist soil.\u003c\/strong\u003e Broadcast across the whole root zone. Never pile it against stems or trunks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater it in.\u003c\/strong\u003e Five to ten litres per square metre, or apply just before forecast rain. This is what starts the dissolution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReassess on the new growth.\u003c\/strong\u003e Leaves already damaged will not re-green, because magnesium moves out of them and does not come back. Judge the result on leaves that emerge afterwards, three to six weeks on.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch3\u003eFive common mistakes\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplying it dry and walking away\u003c\/strong\u003e — without water the granules do nothing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpecting old leaves to recover\u003c\/strong\u003e — they will not. The plant has already withdrawn their magnesium.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTipping dry granules into a sprayer\u003c\/strong\u003e — they need two to four hours in water first, and straining afterwards. Dissolve properly and the solution sprays fine; skip that step and you block the nozzle. See the liquid feed section above, and our take on when a magnesium spray helps in \u003ca href=\"\/blogs\/the-dr-forest-blog\/epsom-salt-for-roses-does-it-actually-work-2\"\u003eEpsom salt for roses: does it actually work?\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMixing it with a calcium feed in one tank\u003c\/strong\u003e — you get calcium sulphate sludge and lose both nutrients.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdding magnesium to an already magnesium-rich clay\u003c\/strong\u003e — many UK clays are. Test before correcting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAssuming any yellow leaf means magnesium\u003c\/strong\u003e — overwatering, nitrogen shortage and iron chlorosis each yellow foliage in a different pattern.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003e\u003ca href=\"\/products\/granulated-gypsum-clay-breaker\"\u003e\u003cstrong\u003eGranulated Gypsum\u003c\/strong\u003e\u003c\/a\u003e is the natural partner. Kieserite supplies magnesium and sulphur; gypsum supplies calcium and sulphur. Because magnesium and calcium compete at the root, lifting one without the other tends to create the deficiency you have just corrected in reverse. Both are pH neutral and both are granular, so they spread together and suit the same beds — particularly heavy clay, where the gypsum also improves structure. Apply them in the same pass as dry granules, at their own rates, and water in together. What you must not do is dissolve the two into one watering can: sulphate plus calcium precipitates calcium sulphate and you lose both.\u003c\/p\u003e\n\u003cp\u003eAvoid stacking kieserite with dolomitic lime in the same year. Both supply magnesium and you will overshoot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eStorage and handling\u003c\/span\u003e\n\u003cp\u003eKeep the bag closed in a dry place, off a concrete floor. Kieserite draws moisture from the air, so an open bag in a damp shed will cake into a block — break it up with a trowel and use it as normal, the analysis is unchanged. Wear gloves if you have sensitive skin, wash hands afterwards, and store out of reach of children and pets as you would any garden fertiliser.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════ TAB 4: FAQ ═══════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ks-panel4\"\u003e\n\u003ch2\u003eKieserite questions, answered\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq1\"\u003eCan I take this as a magnesium supplement, or use it in the bath?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eNo. This is a garden fertiliser for plants and soil. It is not food grade, it has not been tested to the heavy-metal limits that apply to supplements or cosmetics, and it is not intended for human or animal consumption or for bathing. If you want magnesium for yourself, buy a product sold for that purpose from a pharmacy. Everything on this page is about feeding plants.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq2\"\u003eWhat is kieserite and what does it do?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eKieserite is the mineral form of magnesium sulphate monohydrate, MgSO₄·H₂O. It is mined, dried and graded rather than chemically manufactured. As a garden fertiliser it supplies 25% MgO (15% magnesium) and 50% SO₃ (20% sulphur), both as sulphate, which is the form plant roots take up directly. Magnesium sits at the centre of the chlorophyll molecule; sulphur builds the amino acids cysteine and methionine.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq3\"\u003eWhat is the difference between kieserite and Epsom salts?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eWater of crystallisation, which changes the concentration and the format rather than the speed. Epsom salt is magnesium sulphate heptahydrate — seven water molecules, 9.8% magnesium, 710 g\/L soluble. Kieserite is the monohydrate — one water molecule, 15% magnesium, 393 g\/L soluble. Both are fully soluble sulphates and both act quickly. The practical split is format. Kieserite comes as a granule for broadcasting over soil and gives you half as much magnesium again per kilo; Epsom salt is a fine crystal that dissolves in seconds. If you want to spray kieserite you can, but it needs two to four hours in water and a strain first — see the liquid feed section under How to Use, which includes the conversion table for turning any published Epsom rate into a kieserite one.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq4\"\u003eHow much magnesium fertiliser do I need per square metre?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eFor most garden plants, 15–25 g\/m² once a year in spring. Potatoes and top fruit take the upper end at 25–30 g\/m². Leafy vegetables and ericaceous shrubs need less, around 15 g\/m². A level tablespoon is roughly 15 g. Do not exceed 30 g\/m² in a season.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq5\"\u003eHow do I know my plants actually need magnesium?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eLook at the pattern, not the colour alone. Magnesium deficiency yellows the tissue between the veins while the veins themselves stay green, and it always starts on the older, lower leaves because the plant moves magnesium up to new growth. A uniformly pale leaf points to nitrogen. Yellow new leaves with green veins point to iron. A soil test giving a Magnesium Index settles it properly.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq6\"\u003eWill kieserite change my soil pH?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eNo. Magnesium sulphate is pH neutral in solution, which is the main reason to choose it over dolomitic lime. Dolomite supplies magnesium but raises pH, so it is unusable on blueberries, rhododendrons, azaleas and camellias, and it does little on soils already at pH 7 or above. Kieserite works at any pH.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq7\"\u003eCan I apply too much?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes, and it matters. Magnesium competes with calcium and potassium for uptake at the root. Push magnesium too high and you suppress calcium, which brings \u003ca href=\"\/blogs\/the-dr-forest-blog\/blossom-end-rot-tomatoes\"\u003eblossom end rot in tomatoes\u003c\/a\u003e and bitter pit in apples. On clay soils, excess magnesium also degrades crumb structure and makes the ground harder to work. Stay within 30 g\/m² per season and skip it entirely if a soil test shows Magnesium Index 3 or above.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq8\"\u003eHow quickly will I see results?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThree to six weeks in the new growth, provided the soil stays moist. Judge it on leaves that emerge after the application. Leaves already yellow will not re-green, because the plant has withdrawn their magnesium and redistributed it — that damage is permanent on those leaves.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq9\"\u003eIs it organic, and is it safe for children, pets and bees?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eKieserite is a mined mineral, screened and graded, with nothing added. It is a mineral rather than a certified organic input, so we do not describe it as certified organic. It has no pesticide action, so it poses no risk to bees or other pollinators. Water it into the soil after applying and keep children and pets off the treated area until you have.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq10\"\u003eCan I mix it with other Dr Forest products?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. It pairs particularly well with \u003ca href=\"\/products\/granulated-gypsum-clay-breaker\"\u003eGranulated Gypsum\u003c\/a\u003e — kieserite brings magnesium and sulphur, gypsum brings calcium and sulphur, and because the two cations compete at the root it makes sense to lift them together rather than one at a time. Both are pH neutral and both are granular, so they spread in the same pass. It also sits happily alongside granular fertilisers. Two things to avoid: applying it in the same season as dolomitic lime, since both supply magnesium; and dissolving it into the same tank as any calcium feed, which precipitates calcium sulphate and takes both nutrients out of solution. As dry granules on soil they pair perfectly — it is only in the watering can that they clash.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ks-faq11\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ks-faq11\"\u003eCan I dissolve kieserite in water and use it as a liquid feed?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. It is fully soluble at around 393 g\/L, so a foliar spray or a soil drench both work. The catch is time: a 2–5mm granule needs two to four hours in water, ideally started warm and stirred at both ends. Because this is mined rock rather than a refined salt, let the solution settle and decant or strain it before it goes in a sprayer. As a rule of thumb, kieserite carries about half as much magnesium again per gram as Epsom salt, so use roughly two-thirds the weight of any published Epsom rate — the standard 2% foliar solution works out at 13 g of kieserite per litre. Full rates by crop, and the conversion table, are in the How to Use tab.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ks-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ks-faq-paa1\" class=\"drf-faq-q\"\u003eCan I mix kieserite with NPK or potash fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes, as dry granules. It sits happily alongside granular fertilisers and spreads in the same pass. It's useful with high-potash feeding, because heavy potash holds back magnesium uptake. Two things to avoid: dolomitic lime in the same season, because both supply magnesium, and dissolving it in the same can as a calcium feed.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ks-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ks-faq-paa2\" class=\"drf-faq-q\"\u003eWhy choose kieserite over other magnesium fertilisers?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eIt's soluble, so the magnesium is available as soon as it gets wet. It doesn't change soil pH, so it's safe on ericaceous beds. It also carries 20% sulphur. Compared with Epsom salt, it's 15% magnesium against 9.8%, so you spread less product for the same dose. Dolomitic lime also supplies magnesium, but it raises pH.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ks-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ks-faq-paa3\" class=\"drf-faq-q\"\u003eWhich plants benefit most from kieserite?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eTomatoes, especially in growing bags fed heavily with potash. Also potatoes, roses and flowering shrubs, apples, pears, currants and raspberries on light soils, and ericaceous plants such as rhododendron, camellia, azalea and blueberry. On lawns it deepens the green without forcing soft growth. Look for yellowing between the veins on older, lower leaves.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"1.5kg","offer_id":58378071212406,"sku":"DF-KIES-1.5","price":10.49,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":58378071245174,"sku":"DF-KIES-4","price":19.35,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":58378071277942,"sku":"DF-KIES-9","price":30.99,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":58378071310710,"sku":"DF-KIES-15","price":44.49,"currency_code":"GBP","in_stock":true},{"title":"30kg","offer_id":58378071343478,"sku":"DF-KIES-30","price":89.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/parent-kies.jpg?v=1791377899"},{"product_id":"all-purpose-bloom-feed-pair","title":"All Purpose \u0026 Bloom Feed Pair | 4-4-4 + 2-8-4","description":"\u003c!-- Dr Forest — All Purpose \u0026amp; Bloom Feed Pair Product Page (v2 — Design System v1.0) --\u003e\n\u003c!-- Prefix: ab · 4-tab layout. Pure CSS radio tabs + checkbox FAQ. No JavaScript. Shopify-safe. --\u003e\n\u003cstyle\u003e\n.drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-ink:  #7E621F;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; 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}\n  .drf-stat-label { font-size: 0.62em; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--drf-gold-ink); display: block; margin-top: 0.3em; }\n\n  \/* ── TABS (font-size: 0.72em for 5-tab, 0.82em for 4-tab) ── *\/\n  .drf-tabs-wrap { max-width: 100%; overflow: hidden; }\n  .drf-tabs-wrap input[type=\"radio\"] { display: none; }\n  .drf-tab-labels { display: flex; align-items: stretch; border-bottom: 2px solid var(--drf-border); margin-bottom: 1.2em; }\n  .drf-tab-labels label { flex: 1 1 0; padding: 0.75em 0.4em; font-size: 0.82em; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: #8b6914; background: var(--drf-gold-light); cursor: pointer; text-align: center; display: flex; align-items: center; justify-content: center; border-bottom: 3px solid var(--drf-gold); margin-bottom: -2px; transition: all 0.15s; }\n  .drf-tab-labels label:hover { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); }\n  .drf-panel { display: none; }\n  #drf-ab-tab1:checked ~ .drf-tab-labels label[for=\"drf-ab-tab1\"],\n  #drf-ab-tab2:checked ~ .drf-tab-labels label[for=\"drf-ab-tab2\"],\n  #drf-ab-tab3:checked ~ .drf-tab-labels label[for=\"drf-ab-tab3\"],\n  #drf-ab-tab4:checked ~ .drf-tab-labels label[for=\"drf-ab-tab4\"] { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 700; }\n  #drf-ab-tab1:checked ~ .drf-panels #drf-ab-panel1,\n  #drf-ab-tab2:checked ~ .drf-panels #drf-ab-panel2,\n  #drf-ab-tab3:checked ~ .drf-panels #drf-ab-panel3,\n  #drf-ab-tab4:checked ~ .drf-panels #drf-ab-panel4 { display: block; }\n\n  \/* ── CALLOUTS (square; light \/ gold \/ dark) ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); color: var(--drf-cream); border-left-color: var(--drf-gold); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout-dark a { color: var(--drf-cream); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n\n  \/* ── PULL QUOTE ── *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: 1.4em; color: var(--drf-grn); text-align: center; padding: 1.4em 1em; margin: 1.8em auto; max-width: 80%; line-height: 1.5; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); }\n\n  \/* ── INGREDIENT CARDS (5-tab) ── *\/\n  .drf-ing { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-white); }\n  .drf-ing-head { display: flex; align-items: baseline; justify-content: space-between; }\n  .drf-ing-num { font-family: 'Cormorant Garamond', serif; font-size: 1.6em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-ing-pct { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--drf-gold); }\n  .drf-ing h4 { margin: 0.2em 0 0.3em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-ing p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── MECHANISM CARDS ── *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); font-weight: 600; }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate p:last-child { margin-bottom: 0; }\n  .drf-rate ul { font-size: 0.92em; color: var(--drf-muted); margin: 0.4em 0 0; }\n  .drf-rate ul li { margin-bottom: 0.25em; }\n\n  \/* ── STEPS (square block numbers) ── *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.9em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST (1px hairline borders, alternating gold \/ green) ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* ── COMPARISON BOXES (stack vertically) ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-ab-tabset\" id=\"drf-ab-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-ab-tabset\" id=\"drf-ab-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-ab-tabset\" id=\"drf-ab-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-ab-tabset\" id=\"drf-ab-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-ab-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-ab-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-ab-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-ab-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ab-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eAll purpose plant food and a flowering feed, sold as a season pair\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eTwo 1.5 kg bags\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eStage feeding\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003eMade in Stockport\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSmall-batch\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eCompostable bags\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003eNot vegan\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eAn all purpose plant food for the growing half of the year, paired with a high-phosphorus flowering fertiliser for the other half.\u003c\/strong\u003e Between them they cover a season on most beds and borders, which is why these two blends are the ones customers most often buy together.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e is the general purpose fertiliser to reach for from spring onwards: even nitrogen, phosphorus and potassium, released slowly as soil life breaks it down. The \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eBloom 2-8-4\u003c\/a\u003e drops the nitrogen and lifts the phosphorus and potassium, which is the shape you want once plants stop making leaves and start making flowers and fruit.\n\nWhat is in the pair: \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eOrganic All Purpose Fertiliser 4-4-4\u003c\/a\u003e — 1.5 kg, and \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eOrganic Bloom Fertiliser 2-8-4\u003c\/a\u003e — 1.5 kg. Both are handcrafted in Stockport in small batches, with every ingredient listed on the bag. Neither is sold as vegan: bone meal is a named ingredient in both. Each bag carries its own application rate, unchanged in the pair.\n\nMore in \u003ca href=\"\/collections\/organic-fertilisers\"\u003eOrganic Fertilisers\u003c\/a\u003e and \u003ca href=\"\/collections\/bundles\"\u003eBundles \u0026amp; Kits\u003c\/a\u003e. If you are not sure which feed you need, start at \u003ca href=\"\/pages\/which-fertiliser\"\u003ewhich fertiliser\u003c\/a\u003e, work out quantities with the \u003ca href=\"\/pages\/feeding-calculator\"\u003efeeding calculator\u003c\/a\u003e, or read the \u003ca href=\"\/pages\/organic-fertiliser-faq\"\u003eorganic fertiliser FAQ\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv class=\"drf-callout drf-callout-gold\" id=\"drf-size-qty\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWhat's in each size\u003c\/span\u003e\n\u003cp\u003ePick a size on the product form. Each size is a full set of the named packs below — not a single bag.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEntry\u003c\/strong\u003e (1.5 kg each): Organic All Purpose Fertiliser 4-4-4 — 1.5 kg; Organic Bloom Fertiliser 2-8-4 — 1.5 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMid\u003c\/strong\u003e (4 kg each): Organic All Purpose Fertiliser 4-4-4 — 4 kg; Organic Bloom Fertiliser 2-8-4 — 4 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge\u003c\/strong\u003e (9 kg each): Organic All Purpose Fertiliser 4-4-4 — 9 kg; Organic Bloom Fertiliser 2-8-4 — 9 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eRates stay on each component listing. The size picker only changes how much of each pack you get.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eAlso sold on their own\u003c\/span\u003e\n\u003cp\u003eBoth are also sold on their own — \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e · \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eBloom 2-8-4\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e4-4-4\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eAll Purpose bag\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e2-8-4\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eBloom bag\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e1.5 kg\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eEach blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eOwn rate\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePrinted on each bag\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat this pair is for\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003eSpring and early summer growth: the even 4-4-4 is the all purpose plant food for beds, borders and pots\u003c\/li\u003e\n\u003cli\u003eFlowering and fruiting: switch to the 2-8-4 once buds and fruit set, rather than pushing more leaf\u003c\/li\u003e\n\u003cli\u003eMost mixed borders: one pair covers a typical season on ornamental and edible beds\u003c\/li\u003e\n\u003cli\u003eGrowers who already buy both: sold together so you are not placing two orders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eThis pair: two ratios, two jobs\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAll purpose plant food (4-4-4) for leaf and frame, then Bloom (2-8-4) for flowers and fruit\u003c\/li\u003e\n\u003cli\u003eEach bag keeps its own rate; we have not set a combined NPK\u003c\/li\u003e\n\u003cli\u003eEvery ingredient listed; packed in compostable bags in Stockport\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eOne all-season bag\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eA single ratio has to split the difference between growth and flowering\u003c\/li\u003e\n\u003cli\u003eHigh-N through bloom buys leaf at the expense of flowers\u003c\/li\u003e\n\u003cli\u003eYou still need a separate mineral or biostimulant if the soil is short of those\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003cp\u003eDr Forest is a small-batch organic fertiliser business in Stockport, Greater Manchester. This pair is two named blends, weighed and packed by hand. Made with organic ingredients; we do not call it certified organic. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ab-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eWhy an all purpose plant food and a bloom feed are different jobs\u003c\/h2\u003e\n\u003cp\u003eA balanced 4-4-4 is a general purpose fertiliser: enough nitrogen for canopy, enough phosphorus for roots and flowers, enough potassium for water relations and fruit fill. Once a plant has the frame it needs, extra nitrogen mostly makes more leaf. A 2-8-4 cuts that nitrogen and raises phosphorus and potassium for the reproductive half of the season.\u003c\/p\u003e\n\u003cp\u003eOrganic blends release as soil organisms digest them, which is slower than a soluble liquid and is the point. Combined organic and mineral nutrition is the pattern the large meta-analyses keep returning: quality holds up better when the soil has both a biological feed and a mineral backbone (\u003ca href=\"\/pages\/glossary\"\u003eWang et al., 2023\u003c\/a\u003e).\u003c\/p\u003e\n\u003cp\u003eNeither bag in this pair is a mineral mix. If you want the third bag, the \u003ca href=\"\/products\/all-purpose-bloom-mineral-mix-trio\"\u003eAll Purpose, Bloom \u0026amp; Mineral Mix Trio\u003c\/a\u003e adds it.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eTwo ratios, two halves of the year. One bag that tries to do both will always split the difference.\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eEven NPK for the growing months\u003c\/h4\u003e\n\u003cp\u003e4-4-4 supplies nitrogen, phosphorus and potassium in equal parts while the plant is still building leaf and stem.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eHigh phosphorus at flowering\u003c\/h4\u003e\n\u003cp\u003e2-8-4 lifts P and K once the plant is setting flowers and fruit rather than making more canopy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eSlow release through soil life\u003c\/h4\u003e\n\u003cp\u003eOrganic fractions mineralise over weeks, which avoids the feast-and-famine cycle of a weekly liquid.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eNo combined rate\u003c\/h4\u003e\n\u003cp\u003eEach blend is formulated and labelled on its own. The pair is merchandising, not a new recipe.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eReferences\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eWang, Y. et al. (2023). Combined organic–mineral fertilisation meta-analysis, 7,859 data pairs. Science of the Total Environment.\u003c\/li\u003e\n\u003cli\u003eXu, S. et al. (2024). Organic fertilisation, biomass and biodiversity. Nature Communications, 537 experiments.\u003c\/li\u003e\n\u003cli\u003eFerro, N.D. et al. (2022). Organic vs mineral-only systems and soil organic carbon. Agronomy.\u003c\/li\u003e\n\u003cli\u003eCardarelli, M. et al. (2023). Nitrate accumulation under organic vs synthetic nutrition.\u003c\/li\u003e\n\u003cli\u003eMarschner, P. ed. (2012). Marschner's Mineral Nutrition of Higher Plants, 3rd ed. Academic Press.\u003c\/li\u003e\n\u003cli\u003eKopittke, P.M. \u0026amp; Menzies, N.W. (2007). The basic cation saturation ratio and the 'ideal' soil. SSSA Journal, 71(2).\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ab-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use All Purpose \u0026amp; Bloom Feed Pair\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eUse the rate on each bag\u003c\/span\u003e\n\u003cp\u003eThis pair does not have a combined application rate or a combined NPK. Apply the All Purpose 4-4-4 at the rate printed on that bag, then the Bloom 2-8-4 at the rate printed on that bag when you switch.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eNot a vegan pair\u003c\/span\u003e\n\u003cp\u003eBone meal is a named ingredient in both blends. If you need a plant-based programme, look at the vegan fertiliser collection rather than this pair.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eAll Purpose 4-4-4\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Rate on the bag  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e While plants are in leaf\u003c\/div\u003e\n\u003cp\u003eFollow \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e. Typically the spring and early-summer bag.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBloom 2-8-4\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e Rate on the bag  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e From flower and fruit set\u003c\/div\u003e\n\u003cp\u003eFollow \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eBloom 2-8-4\u003c\/a\u003e. Do not keep pushing the 4-4-4 once you want flowers rather than leaf.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003eRead the \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e bag and apply that blend first.\u003c\/li\u003e\n\u003cli\u003eSwitch when buds or fruit set, rather than on a calendar date.\u003c\/li\u003e\n\u003cli\u003eApply \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eBloom 2-8-4\u003c\/a\u003e at the rate on its own bag.\u003c\/li\u003e\n\u003cli\u003eQuantities for an area: \u003ca href=\"\/pages\/feeding-calculator\"\u003efeeding calculator\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eUse with\u003c\/span\u003e\n\u003cp\u003eIf the bed is short of trace minerals, step up to the \u003ca href=\"\/products\/all-purpose-bloom-mineral-mix-trio\"\u003eAll Purpose, Bloom \u0026amp; Mineral Mix Trio\u003c\/a\u003e. Crop-specific beds (tomatoes, roses) belong with the \u003ca href=\"\/collections\/crop-specific-fertilisers\"\u003ecrop feeds\u003c\/a\u003e, not this pair. Background: \u003ca href=\"\/pages\/which-fertiliser\"\u003ewhich fertiliser\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ab-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eFAQ\u003c\/span\u003e\n\u003ch2\u003eAll Purpose \u0026amp; Bloom Feed Pair: questions\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq1\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq1\"\u003eWhat is all purpose plant food in this pair?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eThe \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e bag. Even NPK, used while plants are still making leaf. The Bloom bag is the other half of the season.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq2\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq2\"\u003eWhen do I switch from All Purpose to Bloom?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eWhen the plant stops putting on leaf and starts making flowers or fruit. Exact week depends on the crop, not on the pair.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq3\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq3\"\u003eIs there a combined rate for the two bags?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNo. Each bag keeps the rate printed on it. We have not invented a combined NPK or a single handful figure for the pair.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq4\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq4\"\u003eIs this vegan?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNo. Bone meal is a named ingredient in both blends. See the vegan fertiliser collection for plant-based feeds.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq5\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq5\"\u003eIs this organic?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eMade with organic ingredients. We do not call it certified organic.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq6\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq6\"\u003eCan I use this on edible crops?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. It is a fertiliser pair, not a pesticide. Follow the rate on each bag and wash produce as you normally would.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq7\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq7\"\u003eWhere is it made?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eHandcrafted in small batches in Stockport, Greater Manchester, packed in compostable bags.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq8\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq8\"\u003eWhat if I also need minerals?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eBuy the \u003ca href=\"\/products\/all-purpose-bloom-mineral-mix-trio\"\u003etrio with Mineral Mix\u003c\/a\u003e rather than guessing a fourth bag.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ab-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ab-faq-paa1\" class=\"drf-faq-q\"\u003eIs the bundle cheaper than buying the products separately?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. At today's prices (October 2026) every size costs about 10% less than buying the same products separately. The smallest size is £21.50 against £24.00 bought one by one, a saving of £2.50. Check each product page for current single prices.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ab-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ab-faq-paa2\" class=\"drf-faq-q\"\u003eCan I choose a different size of each product?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNot in the bundle. The sizes are fixed: 1.5 kg each; 4 kg each; 9 kg each. If you want different amounts, buy the products on their own pages and mix the sizes as you like.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ab-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ab-faq-paa3\" class=\"drf-faq-q\"\u003eCan I buy just one of these products?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. Each one is sold on its own: \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eOrganic All Purpose Fertiliser 4-4-4\u003c\/a\u003e, \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eOrganic Bloom Fertiliser 2-8-4\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Dr Forest","offers":[{"title":"Small – 1.5 kg each","offer_id":58601409544566,"sku":"DF-BDL-APBLOOM-S","price":21.5,"currency_code":"GBP","in_stock":true},{"title":"Medium – 4 kg each","offer_id":58829216874870,"sku":"DF-BDL-APBLOOM-M","price":44.1,"currency_code":"GBP","in_stock":true},{"title":"Large – 9 kg each","offer_id":58829216907638,"sku":"DF-BDL-APBLOOM-L","price":82.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/all_purpose_4-4-4_fbc6d756-4370-4231-99c3-6f839e4284ac.png?v=1788454450"},{"product_id":"all-purpose-bloom-mineral-mix-trio","title":"All Purpose, Bloom \u0026 Mineral Mix Trio","description":"\u003c!-- Dr Forest — All Purpose, Bloom \u0026amp; Mineral Mix Trio Product Page (v2 — Design System v1.0) --\u003e\n\u003c!-- Prefix: mt · 4-tab layout. Pure CSS radio tabs + checkbox FAQ. No JavaScript. Shopify-safe. --\u003e\n\u003cstyle\u003e\n.drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-ink:  #7E621F;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; font-weight: 600; font-size: 0.85em; letter-spacing: 0.2em; text-transform: uppercase; color: var(--drf-muted); margin: 1.2em 0 0.3em; }\n  .drf-wrap p { margin-bottom: 0.9em; }\n  .drf-wrap ul { padding-left: 1.2em; margin-bottom: 0.9em; }\n  .drf-wrap ul li { margin-bottom: 0.35em; }\n  .drf-wrap strong { font-weight: 500; color: var(--drf-grn); }\n  .drf-wrap em { font-style: italic; color: var(--drf-muted); }\n  .drf-wrap a { color: var(--drf-grn); text-decoration: underline; text-underline-offset: 2px; }\n  .drf-eyebrow { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--drf-gold-ink); display: block; margin-bottom: 0.4em; }\n\n  \/* ── BADGES (hardcoded hex for legacy compatibility) ── *\/\n  .drf-badge-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 7px; margin: 0 0 12px; }\n  .drf-badge { padding: 9px 12px; font-size: 11px; font-weight: 600; 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}\n  .drf-stat-label { font-size: 0.62em; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--drf-gold-ink); display: block; margin-top: 0.3em; }\n\n  \/* ── TABS (font-size: 0.72em for 5-tab, 0.82em for 4-tab) ── *\/\n  .drf-tabs-wrap { max-width: 100%; overflow: hidden; }\n  .drf-tabs-wrap input[type=\"radio\"] { display: none; }\n  .drf-tab-labels { display: flex; align-items: stretch; border-bottom: 2px solid var(--drf-border); margin-bottom: 1.2em; }\n  .drf-tab-labels label { flex: 1 1 0; padding: 0.75em 0.4em; font-size: 0.82em; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: #8b6914; background: var(--drf-gold-light); cursor: pointer; text-align: center; display: flex; align-items: center; justify-content: center; border-bottom: 3px solid var(--drf-gold); margin-bottom: -2px; transition: all 0.15s; }\n  .drf-tab-labels label:hover { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); }\n  .drf-panel { display: none; }\n  #drf-mt-tab1:checked ~ .drf-tab-labels label[for=\"drf-mt-tab1\"],\n  #drf-mt-tab2:checked ~ .drf-tab-labels label[for=\"drf-mt-tab2\"],\n  #drf-mt-tab3:checked ~ .drf-tab-labels label[for=\"drf-mt-tab3\"],\n  #drf-mt-tab4:checked ~ .drf-tab-labels label[for=\"drf-mt-tab4\"] { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 700; }\n  #drf-mt-tab1:checked ~ .drf-panels #drf-mt-panel1,\n  #drf-mt-tab2:checked ~ .drf-panels #drf-mt-panel2,\n  #drf-mt-tab3:checked ~ .drf-panels #drf-mt-panel3,\n  #drf-mt-tab4:checked ~ .drf-panels #drf-mt-panel4 { display: block; }\n\n  \/* ── CALLOUTS (square; light \/ gold \/ dark) ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); color: var(--drf-cream); border-left-color: var(--drf-gold); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout-dark a { color: var(--drf-cream); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n\n  \/* ── PULL QUOTE ── *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: 1.4em; color: var(--drf-grn); text-align: center; padding: 1.4em 1em; margin: 1.8em auto; max-width: 80%; line-height: 1.5; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); }\n\n  \/* ── INGREDIENT CARDS (5-tab) ── *\/\n  .drf-ing { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-white); }\n  .drf-ing-head { display: flex; align-items: baseline; justify-content: space-between; }\n  .drf-ing-num { font-family: 'Cormorant Garamond', serif; font-size: 1.6em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-ing-pct { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--drf-gold); }\n  .drf-ing h4 { margin: 0.2em 0 0.3em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-ing p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── MECHANISM CARDS ── *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); font-weight: 600; }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate p:last-child { margin-bottom: 0; }\n  .drf-rate ul { font-size: 0.92em; color: var(--drf-muted); margin: 0.4em 0 0; }\n  .drf-rate ul li { margin-bottom: 0.25em; }\n\n  \/* ── STEPS (square block numbers) ── *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.9em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST (1px hairline borders, alternating gold \/ green) ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* ── COMPARISON BOXES (stack vertically) ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-mt-tabset\" id=\"drf-mt-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-mt-tabset\" id=\"drf-mt-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-mt-tabset\" id=\"drf-mt-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-mt-tabset\" id=\"drf-mt-tab4\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-mt-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-mt-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-mt-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-mt-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-mt-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003eOrganic plant food for the season, plus the minerals an NPK blend does not carry\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eThree 1.5 kg bags\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eOrganic plant food\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003ePlant minerals\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSmall-batch UK\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eCompostable bags\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003eNot vegan\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eOrganic plant food for the whole season, plus the plant minerals that no NPK blend is designed to supply.\u003c\/strong\u003e The pair covers growth and flowering; the third bag covers the soil minerals a heavily cropped bed loses first.\u003c\/p\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e is the all purpose plant food for spring and summer. The \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eBloom 2-8-4\u003c\/a\u003e shifts the ratio for flowering and fruiting. The \u003ca href=\"\/products\/soil-conditioner-mineral-mix\"\u003eMineral Mix\u003c\/a\u003e is a mineral fertiliser carrying the soil minerals a straight NPK feed leaves out.\n\nWhat is in the trio: \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eOrganic All Purpose Fertiliser 4-4-4\u003c\/a\u003e — 1.5 kg; \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eOrganic Bloom Fertiliser 2-8-4\u003c\/a\u003e — 1.5 kg; \u003ca href=\"\/products\/soil-conditioner-mineral-mix\"\u003eMineral Mix for Plants\u003c\/a\u003e — 1.5 kg. All three are handcrafted in Stockport, every ingredient listed. None of the three is sold as vegan: the two feeds contain bone meal, and the Mineral Mix contains sea shell meal. Each bag carries its own application rate, unchanged in the trio.\n\nThis combination turns up in orders far more often than chance would put it there, which is why it exists. More in \u003ca href=\"\/collections\/organic-fertilisers\"\u003eOrganic Fertilisers\u003c\/a\u003e, \u003ca href=\"\/collections\/vegetables-allotment\"\u003eVegetables \u0026amp; Allotment\u003c\/a\u003e and \u003ca href=\"\/collections\/bundles\"\u003eBundles \u0026amp; Kits\u003c\/a\u003e. Quantities via the \u003ca href=\"\/pages\/feeding-calculator\"\u003efeeding calculator\u003c\/a\u003e; terms in the \u003ca href=\"\/pages\/glossary\"\u003egrowing glossary\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv class=\"drf-callout drf-callout-gold\" id=\"drf-size-qty\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWhat's in each size\u003c\/span\u003e\n\u003cp\u003ePick a size on the product form. Each size is a full set of the named packs below — not a single bag.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEntry\u003c\/strong\u003e (1.5 kg each (4.5 kg total)): Organic All Purpose Fertiliser 4-4-4 — 1.5 kg; Organic Bloom Fertiliser 2-8-4 — 1.5 kg; Mineral Mix for Plants — 1.5 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMid\u003c\/strong\u003e (4 kg AP + 4 kg Bloom + 3 kg Mineral Mix (11 kg total)): Organic All Purpose Fertiliser 4-4-4 — 4 kg; Organic Bloom Fertiliser 2-8-4 — 4 kg; Mineral Mix for Plants — 3 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge\u003c\/strong\u003e (9 kg each (27 kg total)): Organic All Purpose Fertiliser 4-4-4 — 9 kg; Organic Bloom Fertiliser 2-8-4 — 9 kg; Mineral Mix for Plants — 9 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eRates stay on each component listing. The size picker only changes how much of each pack you get.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eAlso sold on their own\u003c\/span\u003e\n\u003cp\u003eEach is also sold on its own — \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e · \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eBloom 2-8-4\u003c\/a\u003e · \u003ca href=\"\/products\/soil-conditioner-mineral-mix\"\u003eMineral Mix\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e3 bags\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eFeed + minerals\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e4-4-4\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eThen 2-8-4\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e1.5 kg\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eEach bag\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eOwn rate\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eOn each bag\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat the trio covers\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003eOrganic plant food for mixed beds: 4-4-4 then 2-8-4 across the growing year\u003c\/li\u003e\n\u003cli\u003ePlant minerals the NPK bags are not built to carry: the Mineral Mix bag\u003c\/li\u003e\n\u003cli\u003eSoil minerals on a bed that has been cropped hard for several seasons\u003c\/li\u003e\n\u003cli\u003eOne order instead of three when you already buy all three\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eTrio: feeds plus minerals\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTwo NPK ratios for the season, plus a dedicated mineral bag\u003c\/li\u003e\n\u003cli\u003eUseful where the soil has been worked hard and NPK alone looks thin\u003c\/li\u003e\n\u003cli\u003eEach bag keeps its own rate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eThe two-bag pair only\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003ca href=\"\/products\/all-purpose-bloom-feed-pair\"\u003eAll Purpose \u0026amp; Bloom pair\u003c\/a\u003e is the feeds without the mineral bag\u003c\/li\u003e\n\u003cli\u003eEnough if the soil already has a mineral programme\u003c\/li\u003e\n\u003cli\u003eCheaper, and the honest choice if you do not need the third bag\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003cp\u003eDr Forest packs this by hand in Stockport, Greater Manchester. Made with organic ingredients; we do not call it certified organic. Plant minerals sit in their own bag so the NPK recipes stay honest. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-mt-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eOrganic plant food and plant minerals do different work\u003c\/h2\u003e\n\u003cp\u003eAn NPK blend is built around nitrogen, phosphorus and potassium. Secondary nutrients and traces are present only where an ingredient happens to carry them. A mineral mix exists because those extras are not a rounding error on a hungry bed: they are the enzyme cofactors and structural cations the crop still needs.\u003c\/p\u003e\n\u003cp\u003eThe large organic-versus-mineral literature is not an argument for dropping minerals. Combined organic-mineral programmes show the strongest quality outcomes in the 7,859-pair meta-analysis (Wang et al., 2023). This trio is that idea in three bags, not one mystery blend.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eNPK grows the crop. The mineral bag is for what the NPK bags were never designed to carry.\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eOrganic plant food first\u003c\/h4\u003e\n\u003cp\u003e4-4-4 then 2-8-4 cover the nitrogen, phosphorus and potassium the plant uses in bulk.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eMinerals on their own bag\u003c\/h4\u003e\n\u003cp\u003eTrace and secondary minerals stay in the Mineral Mix so we are not pretending the NPK bags do that job.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eSlow organic release\u003c\/h4\u003e\n\u003cp\u003eSoil organisms mineralise the feed bags over weeks rather than hours.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eNo combined recipe\u003c\/h4\u003e\n\u003cp\u003eThree products, three labels, three rates. The trio is not a new NPK.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eReferences\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eWang, Y. et al. (2023). Combined organic–mineral fertilisation meta-analysis, 7,859 data pairs. Science of the Total Environment.\u003c\/li\u003e\n\u003cli\u003eXu, S. et al. (2024). Organic fertilisation, biomass and biodiversity. Nature Communications, 537 experiments.\u003c\/li\u003e\n\u003cli\u003eFerro, N.D. et al. (2022). Organic vs mineral-only systems and soil organic carbon. Agronomy.\u003c\/li\u003e\n\u003cli\u003eMarschner, P. ed. (2012). Marschner's Mineral Nutrition of Higher Plants, 3rd ed. Academic Press.\u003c\/li\u003e\n\u003cli\u003eKopittke, P.M. \u0026amp; Menzies, N.W. (2007). The basic cation saturation ratio and the 'ideal' soil. SSSA Journal, 71(2).\u003c\/li\u003e\n\u003cli\u003eNardi, S. et al. (2009). Physiological effects of humic substances on soil bacteria and mycorrhizae. Soil Biology and Biochemistry.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-mt-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use All Purpose, Bloom \u0026amp; Mineral Mix Trio\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eThree bags, three rates\u003c\/span\u003e\n\u003cp\u003eDo not mix the three into one handful and guess. Use the rate printed on each bag. The Mineral Mix is a complement, not a replacement for the two feeds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eNot vegan\u003c\/span\u003e\n\u003cp\u003eBone meal in both feeds; sea shell meal in the Mineral Mix. Choose a plant-based programme if that matters to you.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eAll Purpose 4-4-4\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e On the bag  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Leaf and frame\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eAll Purpose 4-4-4\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBloom 2-8-4\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e On the bag  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Flowers and fruit\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eBloom 2-8-4\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eMineral Mix\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e On the bag  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e As that listing states\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"\/products\/soil-conditioner-mineral-mix\"\u003eMineral Mix for Plants\u003c\/a\u003e. Not a combined trio rate.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003eApply All Purpose at its own rate while plants are in leaf.\u003c\/li\u003e\n\u003cli\u003eSwitch to Bloom at its own rate at flower or fruit set.\u003c\/li\u003e\n\u003cli\u003eApply Mineral Mix as the \u003ca href=\"\/products\/soil-conditioner-mineral-mix\"\u003eproduct page\u003c\/a\u003e describes, not as a blended handful.\u003c\/li\u003e\n\u003cli\u003eArea sums: \u003ca href=\"\/pages\/feeding-calculator\"\u003efeeding calculator\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eUse with\u003c\/span\u003e\n\u003cp\u003eIf you only need the two feeds, buy the \u003ca href=\"\/products\/all-purpose-bloom-feed-pair\"\u003eAll Purpose \u0026amp; Bloom pair\u003c\/a\u003e. Crop-specific work sits in \u003ca href=\"\/collections\/tomatoes-edibles\"\u003eTomatoes, Chillies \u0026amp; Peppers\u003c\/a\u003e and \u003ca href=\"\/collections\/crop-specific-fertilisers\"\u003eFeed by Crop\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-mt-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eFAQ\u003c\/span\u003e\n\u003ch2\u003eAll Purpose, Bloom \u0026amp; Mineral Mix Trio: questions\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-mt-faq1\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-mt-faq1\"\u003eWhat is organic plant food in this trio?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eThe All Purpose and Bloom bags. The third bag is minerals, not another NPK.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-mt-faq2\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-mt-faq2\"\u003eDo I need the Mineral Mix every year?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eOn a bed that is cropped hard, yes it earns its place. On a soil you already mineralise separately, the two-bag pair is enough.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-mt-faq3\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-mt-faq3\"\u003eIs there a combined NPK for the three bags?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNo. We have not set one. Each bag keeps the figures and the rate on its own label.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-mt-faq4\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-mt-faq4\"\u003eIs it vegan?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNo. Bone meal and sea shell meal are named ingredients.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-mt-faq5\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-mt-faq5\"\u003eIs it organic?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eMade with organic ingredients. We do not call it certified organic.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-mt-faq6\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-mt-faq6\"\u003eCan I use it on vegetables?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. For a vegetable-led plot you may still prefer the \u003ca href=\"\/products\/tomato-veg-feed-pair\"\u003eTomato \u0026amp; Vegetable Feed Pair\u003c\/a\u003e plus minerals on the side.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-mt-faq7\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-mt-faq7\"\u003eWhere is it packed?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eStockport, Greater Manchester, in compostable bags.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-mt-faq8\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-mt-faq8\"\u003eHow do I work out how much I need?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eThe \u003ca href=\"\/pages\/feeding-calculator\"\u003efeeding calculator\u003c\/a\u003e and the rate on each bag.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-mt-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-mt-faq-paa1\" class=\"drf-faq-q\"\u003eIs the bundle cheaper than buying the products separately?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. At today's prices (October 2026) every size costs about 10–11% less than buying the same products separately. The smallest size is £31.95 against £35.99 bought one by one, a saving of £4.04. Check each product page for current single prices.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-mt-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-mt-faq-paa2\" class=\"drf-faq-q\"\u003eCan I choose a different size of each product?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNot in the bundle. The sizes are fixed: 1.5 kg each (4.5 kg total); 4 kg AP + 4 kg Bloom + 3 kg Mineral Mix (11 kg total); 9 kg each (27 kg total). If you want different amounts, buy the products on their own pages and mix the sizes as you like.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-mt-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-mt-faq-paa3\" class=\"drf-faq-q\"\u003eCan I buy just one of these products?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. Each one is sold on its own: \u003ca href=\"\/products\/organic-all-purpose-fertiliser-4-4-4\"\u003eOrganic All Purpose Fertiliser 4-4-4\u003c\/a\u003e, \u003ca href=\"\/products\/organic-bloom-fertiliser-2-8-4\"\u003eOrganic Bloom Fertiliser 2-8-4\u003c\/a\u003e, \u003ca href=\"\/products\/soil-conditioner-mineral-mix\"\u003eMineral Mix for Plants\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Dr Forest","offers":[{"title":"Small – 1.5 kg each (4.5 kg total)","offer_id":58601410036086,"sku":"DF-BDL-APBLOOMMIN-S","price":31.95,"currency_code":"GBP","in_stock":true},{"title":"Medium – 4 kg AP + 4 kg Bloom + 3 kg Mineral Mix (11 kg total)","offer_id":58855309082998,"sku":"DF-BDL-APBLOOMMIN-M","price":63.44,"currency_code":"GBP","in_stock":true},{"title":"Large – 9 kg each (27 kg total)","offer_id":58855309115766,"sku":"DF-BDL-APBLOOMMIN-L","price":122.84,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/all_purpose_4-4-4_ff065674-592d-45ae-8ad7-3465e97a6edf.png?v=1788454448"},{"product_id":"tomato-veg-feed-pair","title":"Tomato Feed \u0026 Veg Feed Pair | 3-4-6 + 4-5-6","description":"\u003c!-- Dr Forest — Tomato \u0026amp; Vegetable Feed Pair Product Page (v2 — Design System v1.0) --\u003e\n\u003c!-- Prefix: tv · 4-tab layout. Pure CSS radio tabs + checkbox FAQ. No JavaScript. Shopify-safe. --\u003e\n\u003cstyle\u003e\n.drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-cream:      #F5F2EC;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n    --drf-border:     #d4cfc5;\n  }\n\n  \/* ── TYPOGRAPHY ── *\/\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.35em; color: var(--drf-grn); margin: 1.4em 0 0.4em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; 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letter-spacing: 0.12em; text-transform: uppercase; color: var(--drf-gold); display: block; margin-top: 0.3em; }\n\n  \/* ── TABS (font-size: 0.72em for 5-tab, 0.82em for 4-tab) ── *\/\n  .drf-tabs-wrap { max-width: 100%; overflow: hidden; }\n  .drf-tabs-wrap input[type=\"radio\"] { display: none; }\n  .drf-tab-labels { display: flex; align-items: stretch; border-bottom: 2px solid var(--drf-border); margin-bottom: 1.2em; }\n  .drf-tab-labels label { flex: 1 1 0; padding: 0.75em 0.4em; font-size: 0.82em; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: #8b6914; background: var(--drf-gold-light); cursor: pointer; text-align: center; display: flex; align-items: center; justify-content: center; border-bottom: 3px solid var(--drf-gold); margin-bottom: -2px; transition: all 0.15s; }\n  .drf-tab-labels label:hover { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); }\n  .drf-panel { display: none; }\n  #drf-tv-tab1:checked ~ .drf-tab-labels label[for=\"drf-tv-tab1\"],\n  #drf-tv-tab2:checked ~ .drf-tab-labels label[for=\"drf-tv-tab2\"],\n  #drf-tv-tab3:checked ~ .drf-tab-labels label[for=\"drf-tv-tab3\"],\n  #drf-tv-tab4:checked ~ .drf-tab-labels label[for=\"drf-tv-tab4\"] { color: var(--drf-grn); background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 700; }\n  #drf-tv-tab1:checked ~ .drf-panels #drf-tv-panel1,\n  #drf-tv-tab2:checked ~ .drf-panels #drf-tv-panel2,\n  #drf-tv-tab3:checked ~ .drf-panels #drf-tv-panel3,\n  #drf-tv-tab4:checked ~ .drf-panels #drf-tv-panel4 { display: block; }\n\n  \/* ── CALLOUTS (square; light \/ gold \/ dark) ── *\/\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn-dark); color: var(--drf-cream); border-left-color: var(--drf-gold); }\n  .drf-callout-dark p { color: var(--drf-cream); }\n  .drf-callout-dark strong { color: var(--drf-gold); }\n  .drf-callout-dark a { color: var(--drf-cream); }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n\n  \/* ── PULL QUOTE ── *\/\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: 1.4em; color: var(--drf-grn); text-align: center; padding: 1.4em 1em; margin: 1.8em auto; max-width: 80%; line-height: 1.5; border-top: 1px solid var(--drf-gold); border-bottom: 1px solid var(--drf-gold); }\n\n  \/* ── INGREDIENT CARDS (5-tab) ── *\/\n  .drf-ing { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-white); }\n  .drf-ing-head { display: flex; align-items: baseline; justify-content: space-between; }\n  .drf-ing-num { font-family: 'Cormorant Garamond', serif; font-size: 1.6em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-ing-pct { font-family: 'Jost', sans-serif; font-size: 0.72em; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--drf-gold); }\n  .drf-ing h4 { margin: 0.2em 0 0.3em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-ing p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── MECHANISM CARDS ── *\/\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n\n  \/* ── RATE CARDS ── *\/\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; background: var(--drf-grn-light); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); font-weight: 600; }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate p:last-child { margin-bottom: 0; }\n  .drf-rate ul { font-size: 0.92em; color: var(--drf-muted); margin: 0.4em 0 0; }\n  .drf-rate ul li { margin-bottom: 0.25em; }\n\n  \/* ── STEPS (square block numbers) ── *\/\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.8em; width: 2em; height: 2em; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.9em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n\n  \/* ── USE-CASE LIST (1px hairline borders, alternating gold \/ green) ── *\/\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n\n  \/* ── COMPARISON BOXES (stack vertically) ── *\/\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; background: var(--drf-grn-light); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; font-weight: 400; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n\n  \/* ── FAQ (square +\/- with 1px gold border) ── *\/\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 600; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border: 1px solid var(--drf-gold); background: transparent; display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 900px; }\n\n  \/* ── REFS \u0026 SEPARATOR (200px centred hairline) ── *\/\n  .drf-refs { font-size: 0.78em; color: #888; line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-muted); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); width: 200px; margin: 1.8em auto; }\n\n  \/* ── TABLE (dark-green header, alternating pale-green stripes) ── *\/\n  .drf-wrap table { width: 100%; border-collapse: collapse; margin: 1em 0; font-size: 0.92em; }\n  .drf-wrap table th { background: var(--drf-grn); color: #fff; font-weight: 600; padding: 0.6em 0.8em; text-align: left; font-size: 0.85em; letter-spacing: 0.04em; }\n  .drf-wrap table td { padding: 0.55em 0.8em; border-bottom: 1px solid var(--drf-border); }\n  .drf-wrap table tr:nth-child(even) td { background: var(--drf-grn-light); }\n\n  \/* ── FIGURES (optional — inline SVG charts) ── *\/\n  .drf-fig { margin: 1.2em 0 1.4em; border: 1px solid var(--drf-border); border-top: 2px solid var(--drf-gold); background: var(--drf-white); padding: 1em 1em 0.8em; }\n  .drf-fig svg { width: 100%; height: auto; display: block; }\n  .drf-fig-cap { font-size: 0.8em; color: var(--drf-muted); line-height: 1.55; margin-top: 0.7em; }\n  .drf-fig-cap strong { color: var(--drf-grn); }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput checked id=\"drf-tv-tab1\" name=\"drf-tv-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-tv-tab2\" name=\"drf-tv-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-tv-tab3\" name=\"drf-tv-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-tv-tab4\" name=\"drf-tv-tabset\" type=\"radio\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-tv-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-tv-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-tv-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-tv-tab4\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-tv-panel1\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eMade by Growers · Backed by Science\u003c\/span\u003e\n\u003ch2\u003ePlant food for vegetables on the plot, with tomato feed under glass\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eTomato 3-4-6\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eVeg 4-5-6\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-gold\"\u003e\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eTwo 750 g bags each\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003ePacked in Stockport\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-dark\"\u003eCompostable bags\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003eTomato feed for plants under glass and veg feed for the rest of the plot — 3-4-6 and 4-5-6, 1.5kg of each slow-release blend. The tomato bag is potassium-led once fruit sets. The rest of the vegetable bed wants something more even. Detail on fertiliser for tomatoes stays on that listing.\u003c\/p\u003e\n\u003cp\u003eOne blend does not do both well, so here are the two.\n\nWhat is in the pair: \u003ca href=\"\/products\/organic-tomato-fertiliser\"\u003eOrganic Tomato Fertiliser 3-4-6\u003c\/a\u003e — 1.5 kg, as tomato plant feed for growbags, pots and beds; \u003ca href=\"\/products\/organic-fruit-vegetable-fertiliser\"\u003eFruit \u0026amp; Vegetable Fertiliser 4-5-6\u003c\/a\u003e — 1.5 kg, for the wider plot. Both arrive as a pair of 750 g bags rather than a single sack, which means the half you have not started on stays sealed. Made in small batches in Stockport, with the full list printed on each bag. Application rates are per product and are not altered by buying the two together.\n\nMore in \u003ca href=\"\/collections\/tomatoes-edibles\"\u003eTomatoes \u0026amp; Edibles\u003c\/a\u003e, \u003ca href=\"\/collections\/vegetables-allotment\"\u003eVegetables \u0026amp; Allotment\u003c\/a\u003e and \u003ca href=\"\/collections\/bundles\"\u003eBundles \u0026amp; Kits\u003c\/a\u003e. Quantities via the \u003ca href=\"\/pages\/feeding-calculator\"\u003efeeding calculator\u003c\/a\u003e; the reasoning behind the blends is in the \u003ca href=\"\/pages\/organic-fertiliser-faq\"\u003eorganic fertiliser FAQ\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003cdiv class=\"drf-callout drf-callout-gold\" id=\"drf-size-qty\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWhat's in each size\u003c\/span\u003e\n\u003cp\u003ePick a size on the product form. Each size is a full set of the named packs below — not a single bag.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEntry\u003c\/strong\u003e (1.5 kg each (each blend 2 x 750 g)): Organic Tomato Fertiliser 3-4-6 — 1.5 kg (2 × 750 g); Fruit \u0026amp; Vegetable Fertiliser 4-5-6 — 1.5 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMid\u003c\/strong\u003e (4 kg each): Organic Tomato Fertiliser 3-4-6 — 4 kg; Fruit \u0026amp; Vegetable Fertiliser 4-5-6 — 4 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge\u003c\/strong\u003e (9 kg each): Organic Tomato Fertiliser 3-4-6 — 9 kg; Fruit \u0026amp; Vegetable Fertiliser 4-5-6 — 9 kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eRates stay on each component listing. The size picker only changes how much of each pack you get.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e3-4-6\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eTomato plant feed\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e4-5-6\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eWider vegetable bed\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e1.5 kg\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eEach blend\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eOwn rate\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePer product\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat each bag is for\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003eTomato feed in the greenhouse, growbags and large pots once fruit is set\u003c\/li\u003e\n\u003cli\u003ePlant food for vegetables: brassicas, roots, beans and salad on the open plot\u003c\/li\u003e\n\u003cli\u003eAllotments running tomatoes and a mixed bed from the same order\u003c\/li\u003e\n\u003cli\u003eSealed second 750 g bags so summer heat is not sitting in an open sack\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eTwo edible ratios\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePotassium-led tomato bag; more even fruit-and-veg bag for the rest of the plot\u003c\/li\u003e\n\u003cli\u003eListed ingredients, compostable bags\u003c\/li\u003e\n\u003cli\u003eRates stay on each product page\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eTomato, chilli and strawberry trio\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eThe \u003ca href=\"\/products\/tomato-plant-food-trio\"\u003etrio\u003c\/a\u003e is three fruiting crops, not tomatoes plus brassicas\u003c\/li\u003e\n\u003cli\u003eUse this pair if the second crop is vegetables, not chillies or strawberries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePacked in Stockport\u003c\/span\u003e\n\u003cp\u003eDr Forest packs this in Stockport, Greater Manchester. Made with organic ingredients. \u003cem\u003eMade by Growers. Backed by Science.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-tv-panel2\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eThe Science\u003c\/span\u003e\n\u003ch2\u003eFertilising tomato plants and feeding a mixed vegetable bed\u003c\/h2\u003e\n\u003cp\u003eTomato plant feed is potassium-forward once fruit is on the truss: 3-4-6 is that shape. A mixed vegetable bed still has leafy crops that want more even nutrition, which is what 4-5-6 is for. Putting the tomato ratio on cabbages, or the veg ratio on a heavily fruiting greenhouse, is how both jobs get done badly.\u003c\/p\u003e\n\u003cp\u003eThis page does not replace the crop listings. Fertiliser for tomatoes in detail lives on the \u003ca href=\"\/products\/organic-tomato-fertiliser\"\u003etomato page\u003c\/a\u003e. Plant food for vegetables in detail lives on \u003ca href=\"\/products\/organic-fruit-vegetable-fertiliser\"\u003eFruit \u0026amp; Vegetable 4-5-6\u003c\/a\u003e.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eTomatoes and the rest of the plot are not the same crop. That is the whole reason there are two bags.\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003ePotassium-led tomato bag\u003c\/h4\u003e\n\u003cp\u003e3-4-6 after fruit set, for growbags, pots and beds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eEven veg bag\u003c\/h4\u003e\n\u003cp\u003e4-5-6 for brassicas, roots, beans and salad that are not tomatoes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eListed ingredients\u003c\/h4\u003e\n\u003cp\u003eNo slaughterhouse by-products in either blend.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eTwo rates\u003c\/h4\u003e\n\u003cp\u003eBuying them together does not create a new combined figure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eReferences\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eMarschner, P. ed. (2012). Marschner's Mineral Nutrition of Higher Plants, 3rd ed. Academic Press.\u003c\/li\u003e\n\u003cli\u003eWang, Y. et al. (2023). Combined organic–mineral fertilisation meta-analysis, 7,859 data pairs. Science of the Total Environment.\u003c\/li\u003e\n\u003cli\u003eXu, S. et al. (2024). Organic fertilisation, biomass and biodiversity. Nature Communications, 537 experiments.\u003c\/li\u003e\n\u003cli\u003eCardarelli, M. et al. (2023). Nitrate accumulation under organic vs synthetic nutrition.\u003c\/li\u003e\n\u003cli\u003eJohnston, A.E. \u0026amp; Dawson, C.J. (2018). Polyhalite as a fertiliser. Proceedings 826, International Fertiliser Society.\u003c\/li\u003e\n\u003cli\u003eFerro, N.D. et al. (2022). Organic vs mineral-only systems and soil organic carbon. Agronomy.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-tv-panel3\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eHow to Use\u003c\/span\u003e\n\u003ch2\u003eHow to use Tomato \u0026amp; Vegetable Feed Pair\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eTomato bag on tomatoes, veg bag on the plot\u003c\/span\u003e\n\u003cp\u003eDo not split the difference. Fertilising tomato plants uses the 3-4-6 bag. The wider bed uses 4-5-6.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eRates unchanged by the pair\u003c\/span\u003e\n\u003cp\u003eEach product keeps the application rate on its own listing. There is no pair handful.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTomato 3-4-6\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e On the tomato bag  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Tomato season\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"\/products\/organic-tomato-fertiliser\"\u003eOrganic Tomato Fertiliser\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFruit \u0026amp; Vegetable 4-5-6\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e On the veg bag  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Across the plot\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"\/products\/organic-fruit-vegetable-fertiliser\"\u003eFruit \u0026amp; Vegetable Fertiliser\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003eGreenhouse and growbags: \u003ca href=\"\/products\/organic-tomato-fertiliser\"\u003etomato fertiliser\u003c\/a\u003e at that listing's rate.\u003c\/li\u003e\n\u003cli\u003eOpen ground vegetables: \u003ca href=\"\/products\/organic-fruit-vegetable-fertiliser\"\u003e4-5-6\u003c\/a\u003e at that listing's rate.\u003c\/li\u003e\n\u003cli\u003eIf calcium at the fruit is the problem, add \u003ca href=\"\/products\/powdered-cal-mag-supplement-boron-fulvic-acid-dr-forest\"\u003eCal-Mag\u003c\/a\u003e rather than more tomato feed.\u003c\/li\u003e\n\u003cli\u003eQuantities: \u003ca href=\"\/pages\/feeding-calculator\"\u003efeeding calculator\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eUse with\u003c\/span\u003e\n\u003cp\u003eThree fruiting crops instead of tomatoes plus veg: \u003ca href=\"\/products\/tomato-plant-food-trio\"\u003eTomato, Chilli \u0026amp; Strawberry trio\u003c\/a\u003e. Tomato plus calcium: \u003ca href=\"\/products\/tomato-feed-cal-mag-pair\"\u003eTomato Feed \u0026amp; Cal-Mag Pair\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-tv-panel4\"\u003e\n\u003cspan class=\"drf-eyebrow\"\u003eFAQ\u003c\/span\u003e\n\u003ch2\u003eTomato \u0026amp; Vegetable Feed Pair: questions\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq1\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-tv-faq1\"\u003eIs this fertiliser for tomatoes only?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eHalf of it is. The other bag is plant food for vegetables on the rest of the plot.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq2\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-tv-faq2\"\u003eCan I use the veg bag on tomatoes?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eIt will feed them. It is not the potassium-led tomato ratio. Use the tomato bag on tomatoes.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq3\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-tv-faq3\"\u003eIs there a combined rate?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNo. Application rates are per product and are not altered by buying the two together.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq4\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-tv-faq4\"\u003eAre the ingredients listed?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq5\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-tv-faq5\"\u003eIs it organic?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eMade with organic ingredients. We do not call it certified organic.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq6\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-tv-faq6\"\u003eDoes this stop blossom end rot?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNo. That is a calcium-and-water problem. See \u003ca href=\"\/products\/powdered-cal-mag-supplement-boron-fulvic-acid-dr-forest\"\u003eCal-Mag\u003c\/a\u003e and \u003ca href=\"\/collections\/blossom-end-rot\"\u003eCalcium for Tomatoes\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq7\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-tv-faq7\"\u003eWhere is it made?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eStockport, Greater Manchester.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq8\" type=\"checkbox\"\u003e\n\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-tv-faq8\"\u003eHow do I size the order?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eThe \u003ca href=\"\/pages\/feeding-calculator\"\u003efeeding calculator\u003c\/a\u003e plus the rate on each bag.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-tv-faq-paa1\" class=\"drf-faq-q\"\u003eIs the bundle cheaper than buying the products separately?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. At today's prices (October 2026) every size costs about 10–11% less than buying the same products separately. The smallest size is £20.50 against £23.00 bought one by one, a saving of £2.50. Check each product page for current single prices.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-tv-faq-paa2\" class=\"drf-faq-q\"\u003eCan I choose a different size of each product?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eNot in the bundle. The sizes are fixed: 1.5 kg each (each blend 2 x 750 g); 4 kg each; 9 kg each. If you want different amounts, buy the products on their own pages and mix the sizes as you like.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-tv-faq-paa3\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-tv-faq-paa3\" class=\"drf-faq-q\"\u003eCan I buy just one of these products?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eYes. Each one is sold on its own: \u003ca href=\"\/products\/organic-tomato-fertiliser\"\u003eTomato Feed 3-4-6\u003c\/a\u003e, \u003ca href=\"\/products\/organic-fruit-vegetable-fertiliser\"\u003eFruit \u0026amp; Vegetable Fertiliser (Veg Feed) 4-5-6\u003c\/a\u003e.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Dr Forest","offers":[{"title":"Small – 1.5 kg each (each blend 2 x 750 g)","offer_id":58601410167158,"sku":"DF-BDL-TOMVEG-S","price":20.5,"currency_code":"GBP","in_stock":true},{"title":"Medium – 4 kg each","offer_id":58829218021750,"sku":"DF-BDL-TOMVEG-M","price":42.3,"currency_code":"GBP","in_stock":true},{"title":"Large – 9 kg each","offer_id":58829218054518,"sku":"DF-BDL-TOMVEG-L","price":79.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/premium-tomato-fertiliser-two-brown-compostable-paper-bags-193_cc261f25-d25d-40e4-9055-c7a5298b0f24.webp?v=1788454449"},{"product_id":"organic-all-purpose-booster-5-5-5-solution-grade-powder-dr-forest","title":"Organic All-Purpose Booster 5-5-5 | Soluble Powder","description":"\u003c!-- Dr Forest — Organic All-Purpose Booster 5-5-5 — Shopify Product Page (v2, Design System v1.0) --\u003e\n\u003c!-- Renamed from \"Veg Booster 5-5-5\". Recipe update: potassium now from Sulphate of Potash (was micronised potassium mineral); magnesium now from Kieserite (was Epsom salt \/ magnesium mineral). Corrected: product is a solution-grade powder, not a liquid. 27 Sep 2026: fulvic acid named as its own input (not humic and fulvic); houseplant copy removed. --\u003e\n\u003cstyle\u003e\n  .drf-wrap *, .drf-wrap *::before, .drf-wrap *::after { box-sizing: border-box; margin: 0; padding: 0; }\n  .drf-wrap { font-family: 'Jost', sans-serif; font-weight: 400; color: #2c2c2c; font-size: 14px; line-height: 1.65; width: 100%; max-width: 100%; overflow: hidden; }\n  :root {\n    --drf-grn:        #1B3D2F;\n    --drf-grn-light:  #E8F0EB;\n    --drf-grn-mid:    #4a7a5e;\n    --drf-grn-dark:   #0F2A1F;\n    --drf-gold:       #C5A55A;\n    --drf-gold-light: #FAF7F0;\n    --drf-cream:      #F5F2EC;\n    --drf-border:     #d4cfc5;\n    --drf-muted:      #3A4A40;\n    --drf-white:      #FFFFFF;\n  }\n  .drf-wrap h2 { font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 1.9em; color: var(--drf-grn); line-height: 1.25; margin-bottom: 0.5em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; 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background: var(--drf-grn-light); border-bottom-color: var(--drf-grn); font-weight: 700; }\n  #drf-ab-tab1:checked ~ .drf-panels #drf-ab-panel1,\n  #drf-ab-tab2:checked ~ .drf-panels #drf-ab-panel2,\n  #drf-ab-tab3:checked ~ .drf-panels #drf-ab-panel3,\n  #drf-ab-tab4:checked ~ .drf-panels #drf-ab-panel4,\n  #drf-ab-tab5:checked ~ .drf-panels #drf-ab-panel5 { display: block; }\n  .drf-callout { background: var(--drf-grn-light); border-left: 3px solid var(--drf-grn); padding: 1em 1.2em; margin: 1.2em 0; border-radius: 0; }\n  .drf-callout-gold { background: var(--drf-gold-light); border-left-color: var(--drf-gold); }\n  .drf-callout-dark { background: var(--drf-grn); border-left-color: var(--drf-gold); color: var(--drf-cream); }\n  .drf-callout-dark h4, .drf-callout-dark .drf-callout-title { color: var(--drf-gold); }\n  .drf-callout-dark strong { color: #fff; }\n  .drf-callout p:last-child { margin-bottom: 0; }\n  .drf-callout-title { font-size: 0.72em; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--drf-grn); margin-bottom: 0.4em; display: block; }\n  .drf-callout-gold .drf-callout-title { color: var(--drf-gold); }\n  .drf-mech { border: 1px solid var(--drf-border); border-left: 3px solid var(--drf-gold); padding: 1em 1.2em; margin: 0.8em 0; border-radius: 0; background: var(--drf-white); }\n  .drf-mech-num { font-family: 'Cormorant Garamond', serif; font-size: 2em; font-weight: 400; color: var(--drf-gold); line-height: 1; }\n  .drf-mech h4 { margin-top: 0.2em; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; }\n  .drf-mech p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n  .drf-rate { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin: 0.8em 0; border-radius: 0; background: var(--drf-white); }\n  .drf-rate h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.05em; font-family: 'Cormorant Garamond', serif; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.5em; margin-bottom: 0.6em; }\n  .drf-rate-meta { font-size: 0.85em; color: var(--drf-muted); margin-bottom: 0.5em; }\n  .drf-rate-meta strong { color: var(--drf-gold); }\n  .drf-rate p { font-size: 0.92em; color: var(--drf-muted); margin-bottom: 0; }\n  .drf-steps { counter-reset: drf-step; list-style: none; padding: 0; }\n  .drf-steps li { counter-increment: drf-step; padding: 0.8em 0 0.8em 3em; position: relative; border-bottom: 1px solid #eee; }\n  .drf-steps li::before { content: counter(drf-step); position: absolute; left: 0; top: 0.75em; width: 1.8em; height: 1.8em; border-radius: 0; background: var(--drf-grn); color: #fff; font-family: 'Cormorant Garamond', serif; font-weight: 400; font-size: 0.95em; display: flex; align-items: center; justify-content: center; }\n  .drf-steps li:last-child { border-bottom: none; }\n  .drf-uses { list-style: none; padding: 0; }\n  .drf-uses li { padding: 0.6em 0; border-bottom: 1px solid var(--drf-gold); }\n  .drf-uses li:nth-child(even) { border-bottom-color: var(--drf-grn); }\n  .drf-uses li:last-child { border-bottom: none; }\n  .drf-uses li strong { color: var(--drf-grn); }\n  .drf-compare { margin: 1.2em 0; }\n  .drf-compare-box { border: 1px solid var(--drf-border); padding: 1em 1.2em; margin-bottom: 0.8em; border-radius: 0; background: var(--drf-white); }\n  .drf-compare-box h4 { margin-top: 0; color: var(--drf-grn); text-transform: none; letter-spacing: 0; font-size: 1.1em; font-family: 'Cormorant Garamond', serif; border-bottom: 1px solid var(--drf-gold); padding-bottom: 0.4em; margin-bottom: 0.6em; }\n  .drf-pullquote { font-family: 'Cormorant Garamond', serif; font-style: italic; font-size: 1.3em; color: var(--drf-grn); text-align: center; max-width: 34em; margin: 1.6em auto; padding: 0; }\n  .drf-pullquote .drf-sep { margin: 0.6em auto; }\n  .drf-faq { border-bottom: 1px solid var(--drf-border); }\n  .drf-faq:last-child { border-bottom: none; }\n  .drf-faq input[type=\"checkbox\"] { display: none; }\n  .drf-faq-q { display: flex; justify-content: space-between; align-items: center; padding: 0.8em 0; cursor: pointer; font-weight: 500; color: var(--drf-grn); font-size: 0.95em; }\n  .drf-faq-q::after { content: '+'; font-size: 1.2em; font-weight: 400; color: var(--drf-gold); width: 1.5em; height: 1.5em; border-radius: 0; border: 1px solid var(--drf-gold); background: var(--drf-white); display: flex; align-items: center; justify-content: center; flex-shrink: 0; margin-left: 0.6em; }\n  .drf-faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; font-size: 0.92em; color: var(--drf-muted); line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-h .drf-faq-q::after { content: '\\2212'; background: var(--drf-grn); color: #fff; border-color: var(--drf-grn); }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 800px; }\n  .drf-refs { font-size: 0.78em; color: var(--drf-muted); line-height: 1.5; margin-top: 1.5em; padding-top: 0.8em; border-top: 1px solid var(--drf-border); }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.3em; }\n.drf-faq-h{margin:0;padding:0;border:0;font:inherit;line-height:inherit;letter-spacing:inherit;text-transform:none;color:inherit}\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput type=\"radio\" name=\"drf-ab-tabset\" id=\"drf-ab-tab1\" checked\u003e \u003cinput type=\"radio\" name=\"drf-ab-tabset\" id=\"drf-ab-tab2\"\u003e \u003cinput type=\"radio\" name=\"drf-ab-tabset\" id=\"drf-ab-tab3\"\u003e \u003cinput type=\"radio\" name=\"drf-ab-tabset\" id=\"drf-ab-tab4\"\u003e \u003cinput type=\"radio\" name=\"drf-ab-tabset\" id=\"drf-ab-tab5\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-ab-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-ab-tab2\"\u003eIngredients\u003c\/label\u003e \u003clabel for=\"drf-ab-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-ab-tab4\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-ab-tab5\"\u003eFAQ\u003c\/label\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panels\"\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ab-panel1\"\u003e\n\u003ch2\u003eOrganic All-Purpose Booster 5-5-5 — a fast-acting soluble powder for the moments a granular can't reach\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge drf-badge-green\"\u003eNPK 5-5-5\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSolution Grade\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eFast Release\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSulphate of Potash\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eKieserite Magnesium\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eFulvic Acid\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eSeaweed Extract\u003c\/span\u003e \u003cspan class=\"drf-badge drf-badge-green\"\u003eJust Add Water\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eAll-Purpose Booster 5-5-5 is a solution-grade powder\u003c\/strong\u003e that makes up into a liquid solution when added to water, reaching the root zone within hours, for the moments when a plant needs a nutrient response now rather than over the coming weeks. It ships as a concentrated powder, not a bottled liquid — you add the water at home, so you are not paying to ship it around the country.\u003c\/p\u003e\n\u003cp\u003eThe nitrogen comes from amino acids and the potassium from \u003cstrong\u003eSulphate of Potash\u003c\/strong\u003e — both fully water-soluble, so the whole 5-5-5 soluble fraction is available to roots within hours of watering in. The phosphorus (micronised rock phosphate), calcium (micronised gypsum) and magnesium (\u003cstrong\u003eKieserite\u003c\/strong\u003e) are all micronised to an ultra-fine particle size, so even the mineral fraction breaks down fast. Soluble seaweed extract and \u003cstrong\u003efulvic acid\u003c\/strong\u003e round out the formula — the fulvic acid chelates the minerals in the drench so the rest of the feed is taken up more efficiently.\u003c\/p\u003e\n\u003cp\u003eThis is not a replacement for a slow-release granular base feed. It is the tool for the specific moments listed below, where timing matters more than steady background supply — see \u003cem\u003eBooster vs granular\u003c\/em\u003e further down this tab, and the timing guide on the How to Use tab.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e5-5-5\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eBalanced NPK\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eHours\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eTo Root Zone\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eSOP\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePotassium Source\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eKieserite\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eMagnesium Source\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat All-Purpose Booster is used for in the garden\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransplant establishment\u003c\/strong\u003e — a dilute drench at transplanting gives seedlings and young plants an immediate nutrient supply while roots establish, before a granular has had time to break down\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRescuing a stalled or pale plant\u003c\/strong\u003e — when a plant has yellowed or stopped growing mid-season, a drench of Booster produces visible improvement within days, not weeks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBetween granular top-dressings\u003c\/strong\u003e — fills the gap when the last application of All Purpose 4-4-4 is running low and the next isn't due yet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eContainer and small-pot performance\u003c\/strong\u003e — pots exhaust their nutrient supply faster than open soil; Booster extends productive life without waiting for a granular to break down\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLawn rescue drench\u003c\/strong\u003e — a fast-acting green-up for patchy or stressed turf, applied with a watering can\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeedlings and young plants\u003c\/strong\u003e — a gentle, lower-rate feed for plants too small for full-strength granular\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBooster vs granular — two different jobs\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eAll-Purpose Booster 5-5-5 (soluble powder, fast release)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMixes into a liquid solution — nutrients reach the root zone within hours\u003c\/li\u003e\n\u003cli\u003eApplied as and when a plant needs a response — transplanting, stress, a growth surge\u003c\/li\u003e\n\u003cli\u003eConcentrated powder — you add the water, no shipping weight\u003c\/li\u003e\n\u003cli\u003eNo standing nutrient reserve in the soil between applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eOrganic All-Purpose Fertiliser 4-4-4 (granular, slow release)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBreaks down over weeks as soil microbes and moisture work on it\u003c\/li\u003e\n\u003cli\u003eApplied on a fixed schedule as the background feed for the whole bed\u003c\/li\u003e\n\u003cli\u003eOne application covers weeks, not one watering\u003c\/li\u003e\n\u003cli\u003eBuilds a standing nutrient reserve — but can't respond to a sudden need\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eThe granular feeds the bed. The Booster feeds the moment.\u003chr class=\"drf-sep\"\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ab-panel2\"\u003e\n\u003ch2\u003eAll seven inputs — what they do and why each one is in the formula\u003c\/h2\u003e\n\u003cp\u003eEvery input in All-Purpose Booster 5-5-5 is chosen for how fast it becomes available to a plant, not just for the nutrient it carries. Two ingredients changed in this recipe: potassium now comes from Sulphate of Potash rather than a micronised potassium mineral, and magnesium now comes from Kieserite rather than Epsom salt.\u003c\/p\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eAmino acids — nitrogen, fully soluble\u003c\/h4\u003e\n\u003cp\u003ePlant roots carry amino acid transporters that absorb these molecules whole, without waiting for soil bacteria to convert them first — the step that makes most organic nitrogen slow to act. This is the main reason Booster shows visible greening within days.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eSulphate of Potash — potassium, fully soluble\u003c\/h4\u003e\n\u003cp\u003eSulphate of Potash (SOP) is roughly 50% K₂O and 18% sulphur, and it is genuinely chloride-free. It replaces the micronised potassium mineral used previously: because SOP dissolves completely in water, the whole potassium fraction is now soluble rather than split between a fast and a slow-release form. It also brings the sulphur along with it — a secondary nutrient that's easy to overlook but supports enzyme function and chlorophyll production.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eMicronised rock phosphate — phosphorus, fast-breaking mineral\u003c\/h4\u003e\n\u003cp\u003ePhosphorus is the least mobile nutrient in soil. Milling it to an ultra-fine particle size increases its reactive surface area dramatically, so it starts releasing within days of a drench rather than sitting inert.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eMicronised gypsum — calcium, fast-breaking mineral\u003c\/h4\u003e\n\u003cp\u003eA rapid-acting calcium source that keeps pace with the nitrogen-driven growth surge a Booster application triggers — without calcium and magnesium alongside it, fast nitrogen can trigger a secondary deficiency.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eKieserite — magnesium, naturally mined mineral\u003c\/h4\u003e\n\u003cp\u003eKieserite (magnesium sulphate monohydrate) is roughly 25% MgO and 50% SO₃. It replaces the Epsom salt previously used in this formula. As a mined mineral rather than a refined salt, it sits alongside the gypsum and phosphate in the micronised fraction and contributes further sulphur to the feed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003eSoluble seaweed extract — hormones and trace minerals\u003c\/h4\u003e\n\u003cp\u003eProvides natural cytokinins and auxins that stimulate root development and delay leaf senescence, plus over 60 trace elements in immediately available form.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e07\u003c\/span\u003e\n\u003ch4\u003eFulvic acid — chelation and uptake\u003c\/h4\u003e\n\u003cp\u003eFulvic acid is the smallest, most soluble fraction of humic substances. It chelates the mineral nutrients in the drench and increases the permeability of root cell membranes, so every other ingredient in the formula is absorbed more efficiently.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ab-panel3\"\u003e\n\u003ch2\u003eHow to use All-Purpose Booster: preparation, rates \u0026amp; timing\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eJust add water — solution grade powder\u003c\/span\u003e\n\u003cp\u003eAdd the measured amount to water and stir briefly. The soluble fraction dissolves completely; the micronised fraction forms a fine, stable suspension. Mix fresh for each application — don't store the diluted solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eApplication rates\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRoot drench — standard feed\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e ¼–½ teaspoon (approx. 1–2.5g) per litre | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 1–2 weeks in growth\u003c\/div\u003e\n\u003cp\u003eStandard rate for vegetables, plants and containers. Use the lower rate for maintenance, the higher rate for a visible deficiency or a growth surge.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTransplant drench\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e ¼ teaspoon per litre | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once at transplanting, repeat after 7–10 days\u003c\/div\u003e\n\u003cp\u003eGives seedlings and young plants immediate nutrition while their roots establish — the amino acids and seaweed hormones support rapid recovery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSluggish or pale plants — rescue drench\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e ½ teaspoon per litre | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Two applications, 5–7 days apart\u003c\/div\u003e\n\u003cp\u003eThe soluble nitrogen and potassium produce visible greening within 3–7 days. Return to the standard rate once recovered.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eContainer and small pots\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e ¼–½ teaspoon per litre | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 1–2 weeks\u003c\/div\u003e\n\u003cp\u003eContainers exhaust nutrients faster than open soil, and the fully soluble potassium reaches roots immediately rather than waiting on soil biology.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawn quick-feed\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e ½ teaspoon per litre at approx. 1 L\/m² | \u003cstrong\u003eFrequency:\u003c\/strong\u003e As needed for green-up\u003c\/div\u003e\n\u003cp\u003eA targeted rescue treatment for patchy or stressed turf, not a substitute for a regular granular lawn feed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eStep-by-step preparation\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure the powder.\u003c\/strong\u003e ¼ teaspoon (approx. 1g) per litre for standard feeding, ½ teaspoon (approx. 2.5g) for higher demand.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdd to water and stir.\u003c\/strong\u003e The soluble fraction dissolves within seconds; the micronised fraction forms a fine suspension.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply as a root drench.\u003c\/strong\u003e Saturate the root zone; for containers, apply until a little runs through the drainage holes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse fresh.\u003c\/strong\u003e Mix only what you need — don't store the diluted solution.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWhen timing matters more than schedule\u003c\/span\u003e\n\u003cp\u003eUse the granular \u003cstrong\u003eAll Purpose 4-4-4\u003c\/strong\u003e on its usual schedule as the background feed for the bed. Reach for the Booster at the specific moments a plant's need shifts faster than a granular can respond to: the day you transplant, the week a plant looks off-colour, the point a container plant runs dry between top-dressings, or straight after a stress event. One drench, timed right, does more than an extra granular application a fortnight early.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWorks well combined with…\u003c\/span\u003e\n\u003cp\u003eUse alongside the granular \u003cstrong\u003eAll Purpose Fertiliser 4-4-4\u003c\/strong\u003e as the base feed, with Booster as the liquid top-up between applications. Switch to \u003cstrong\u003eBloom Booster 2-10-5\u003c\/strong\u003e once a fruiting plant sets its first flower. Add \u003cstrong\u003eSeaweed Powder\u003c\/strong\u003e to the same watering can for an enhanced biostimulant drench.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ab-panel4\"\u003e\n\u003ch2\u003eThe science of fast-release feeding: why a soluble drench and a slow-release granular are not interchangeable\u003c\/h2\u003e\n\u003ch3\u003eTwo release curves, two jobs\u003c\/h3\u003e\n\u003cp\u003eA granular fertiliser like All Purpose 4-4-4 is built to be slow. Its minerals are sized so that soil moisture and microbial activity break them down gradually over weeks, releasing a steady trickle of nutrition that a bed can draw on all season. That is exactly the right behaviour for background feeding — but it means the release curve is fixed once the granules go down. It cannot speed up because a plant just went through transplant shock, or because a pot ran dry of nutrients faster than expected.\u003c\/p\u003e\n\u003cp\u003eAll-Purpose Booster inverts that curve deliberately. Every input is chosen to dissolve or break down within hours to days rather than weeks: amino acid nitrogen and Sulphate of Potash go into solution completely; the micronised rock phosphate, gypsum and Kieserite are milled fine enough to behave as near-soluble. The result is a feed you apply \u003cem\u003ebecause\u003c\/em\u003e of what's happening to the plant right now, not on a fixed calendar.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eGranular 4-4-4 — steady background supply\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRelease rate fixed by particle size and soil biology at the time of application\u003c\/li\u003e\n\u003cli\u003eOne application covers the whole bed for weeks\u003c\/li\u003e\n\u003cli\u003eCannot be sped up mid-cycle if a plant's needs change suddenly\u003c\/li\u003e\n\u003cli\u003eBuilds a standing reserve in the soil\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eAll-Purpose Booster — on-demand pulse\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRelease rate is hours, regardless of soil biology\u003c\/li\u003e\n\u003cli\u003eApplied in response to a specific developmental moment\u003c\/li\u003e\n\u003cli\u003eCan be layered on top of a granular feed without disrupting it\u003c\/li\u003e\n\u003cli\u003eNo standing reserve — nutrients are used or leached within days\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eWhy sulphate of potash changes the release profile\u003c\/h3\u003e\n\u003cp\u003eThe potassium mineral this formula used previously was micronised — fast for a mineral, but still part of the slower-breaking fraction alongside the phosphate and gypsum. Sulphate of Potash is a genuinely soluble salt, so switching to it moves the entire potassium supply into the fully soluble fraction alongside the amino nitrogen. Practically, that means nitrogen and potassium now arrive together, on the same timescale — which matters because potassium regulates the uptake and use of nitrogen inside the plant.\u003c\/p\u003e\n\u003ch3\u003eFive mechanisms of action\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eAmino Acid Direct Uptake\u003c\/h4\u003e\n\u003cp\u003eRoot amino acid transporters absorb these molecules whole, bypassing the microbial conversion step that most organic nitrogen sources require — the fastest pathway for organic nitrogen into a plant.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eSoluble Potassium and Nitrogen Together\u003c\/h4\u003e\n\u003cp\u003ePotassium activates the enzymes that put nitrogen to use in protein synthesis and growth. Delivering both in soluble form in the same drench means neither is left waiting on the other.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eSulphur From Two Mineral Sources\u003c\/h4\u003e\n\u003cp\u003eSulphate of Potash and Kieserite both carry sulphur alongside their headline nutrient. Sulphur is a component of several plant enzymes and of chlorophyll synthesis, and is easy to under-supply in a simple N-P-K view of feeding.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eFulvic Acid Chelation \u0026amp; Membrane Transport\u003c\/h4\u003e\n\u003cp\u003eFulvic acid wraps mineral nutrients in a form that resists binding to soil particles, and increases root cell membrane permeability — making every nutrient in the drench more effective per gram applied.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eCalcium and Magnesium Keeping Pace\u003c\/h4\u003e\n\u003cp\u003eFast nitrogen without matched calcium and magnesium can trigger a secondary deficiency — magnesium chlorosis or a calcium-related disorder. Micronised gypsum and Kieserite are included specifically to keep pace with the nitrogen-driven growth response.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eScientific References\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eNäsholm, T. et al. (2009). Uptake of organic nitrogen by plants. \u003cem\u003eNew Phytologist\u003c\/em\u003e, 182(1), 31–48.\u003c\/li\u003e\n\u003cli\u003eCanellas, L.P. \u0026amp; Olivares, F.L. (2014). Physiological responses to humic substances as plant growth promoters. \u003cem\u003eChemical and Biological Technologies in Agriculture\u003c\/em\u003e, 1(1), 3.\u003c\/li\u003e\n\u003cli\u003eShukla, P.S. et al. (2019). Ascophyllum nodosum-based biostimulants. \u003cem\u003eFrontiers in Plant Science\u003c\/em\u003e, 10, 655.\u003c\/li\u003e\n\u003cli\u003eMarschner, H. (2012). \u003cem\u003eMineral Nutrition of Higher Plants\u003c\/em\u003e (3rd ed.). Academic Press.\u003c\/li\u003e\n\u003cli\u003eLambers, H. et al. (2006). Root structure and functioning for efficient acquisition of phosphorus. \u003cem\u003eAnnals of Botany\u003c\/em\u003e, 98(4), 693–713.\u003c\/li\u003e\n\u003cli\u003eKopittke, P.M. \u0026amp; Menzies, N.W. (2007). A review of the use of the basic cation saturation ratio and the \"ideal\" soil. \u003cem\u003eSoil Science Society of America Journal\u003c\/em\u003e, 71(2), 259–265.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-ab-panel5\"\u003e\n\u003ch2\u003eFrequently asked questions about All-Purpose Booster\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq1\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq1\"\u003eWhy use All-Purpose Booster instead of the granular All Purpose Fertiliser 4-4-4?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThey do different jobs. The granular 4-4-4 breaks down over weeks and is the steady background feed for a bed. Booster dissolves within hours and is for the specific moments a granular can't respond to fast enough — transplanting, a stalled plant, a container running low between top-dressings, or recovery after stress. Use the granular on schedule and the Booster on demand; they're not competing for the same job.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq2\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq2\"\u003eIs this the same as Veg Booster 5-5-5?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes — Veg Booster 5-5-5 has been renamed All-Purpose Booster 5-5-5, and the recipe has been updated: potassium now comes from Sulphate of Potash rather than a micronised potassium mineral, and magnesium now comes from Kieserite rather than Epsom salt. The NPK ratio and the rest of the formula are unchanged.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq3\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq3\"\u003eWhat changed with the potassium source, and does it matter?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThe previous formula used a micronised potassium mineral, part of the slower-breaking fraction. Sulphate of Potash is a genuinely soluble salt, so the whole potassium supply now dissolves alongside the amino nitrogen instead of being split across two release speeds. It's also chloride-free and brings a useful dose of sulphur with it.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq4\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq4\"\u003eWhat is Kieserite, and why replace Epsom salt with it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eKieserite is a naturally mined magnesium sulphate mineral, roughly 25% MgO and 50% SO₃. It sits alongside the gypsum and rock phosphate as a mined mineral input rather than a refined salt, and contributes further sulphur to the feed. The magnesium content and role in the formula are unchanged.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq5\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq5\"\u003eWhat makes the nitrogen fast-acting if it's organic?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThe nitrogen comes from amino acids, which plant roots absorb directly through amino acid transporters, bypassing the slower microbial conversion step that most organic nitrogen sources need. That's why Booster shows visible greening within days rather than weeks.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq6\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq6\"\u003eWhy does it contain calcium and magnesium as well as NPK?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eFast nitrogen drives rapid growth, which increases a plant's demand for calcium and magnesium. Without both supplied at the same time, that growth surge can trigger a secondary deficiency. The micronised gypsum and Kieserite keep pace with the nitrogen response.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq7\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq7\"\u003eWhat does the fulvic acid do?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eFulvic acid is a small, water-soluble humic substance. In the drench it binds to the mineral nutrients so they are less likely to lock up in the soil, and it increases root cell membrane permeability. It carries no NPK of its own; its job is to help the rest of the formula get taken up.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq8\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq8\"\u003eWhen should I switch to Bloom Booster instead?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eAt first flower. Once a fruiting or flowering plant sets its first bud, its nutrient priority shifts from nitrogen-driven leaf growth to the phosphorus and potassium that drive flowering and fruit. Bloom Booster 2-10-5 is formulated for that phase.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq9\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq9\"\u003eIs it a replacement for a bottled liquid fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eIt does the same job more efficiently. Bottled liquid fertilisers are typically 85–95% water by weight, so you're paying to ship water and a plastic bottle. Booster is a concentrated powder — you add the water at home.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq10\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq10\"\u003eWill it burn my plants?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eAt the recommended rates, no. The amino acid nitrogen is gentler than a synthetic soluble source, and the balanced calcium and magnesium reduce osmotic stress. If in doubt, start at the lower rate.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq11\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq11\"\u003eCan I mix it with other Dr Forest products?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes. It's designed to sit alongside a granular base feed such as All Purpose 4-4-4, and combines well with Seaweed Powder in the same watering can.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-ab-faq12\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-ab-faq12\"\u003eHow should I store it?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eKeep the dry powder sealed in a cool, dry place away from direct sunlight and moisture. If it absorbs moisture and clumps, it's still usable — break up the clumps and measure as normal. Don't pre-mix and store the diluted solution.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- PAA FAQ additions 2026-10-05 (proposed) --\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ab-faq-paa1\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ab-faq-paa1\" class=\"drf-faq-q\"\u003eWhat is a soluble fertiliser?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eA feed you dissolve in water and apply as a drench or spray, so the nutrients reach the roots straight away instead of waiting for soil life to break down a granule. This one is a powder: the soluble part dissolves completely and a small micronised part forms a fine suspension. Plants take it up within hours, which makes it the quick lift, while a granular feed such as the All Purpose 4-4-4 does the steady background work over weeks.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-ab-faq-paa2\" type=\"checkbox\"\u003e\u003ch3 class=\"drf-faq-h\"\u003e\u003clabel for=\"drf-ab-faq-paa2\" class=\"drf-faq-q\"\u003eHow do I use All-Purpose Booster?\u003c\/label\u003e\u003c\/h3\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003e\u003cp\u003eStir the measured powder into water and use it straight away; don't store the mix. As a standard root drench for vegetables, plants and pots, use ¼–½ teaspoon (about 1–2.5 g) per litre every 1–2 weeks while plants are growing. At transplanting, use ¼ teaspoon per litre and repeat after 7–10 days. For pale or sluggish plants, give ½ teaspoon per litre twice, 5–7 days apart, and you should see greening within 3–7 days. Switch to Bloom Booster at first flower.\u003c\/p\u003e\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- \/PAA FAQ additions --\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"250g","offer_id":58826771857782,"sku":"DRF-AB555-250G","price":9.49,"currency_code":"GBP","in_stock":true},{"title":"1kg","offer_id":58826771890550,"sku":"DRF-AB555-1KG","price":24.49,"currency_code":"GBP","in_stock":true},{"title":"3kg","offer_id":58826771923318,"sku":"DRF-AB555-3KG","price":68.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/5-5-5.png?v=1790458850"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/collections\/all_purpose_4-4-4.png?v=1792502746","url":"https:\/\/www.drforest.co.uk\/collections\/vegetables-allotment.oembed","provider":"Dr Forest","version":"1.0","type":"link"}