{"product_id":"organic-phosphorus-fertiliser-15","title":"High Phosphorus Fertiliser UK | Organic 15% P Plant Food","description":"\u003c!-- Dr Forest — Phosphorus Meal Product Page --\u003e\n\u003c!-- Prefix: drf-pm- (phosphorus meal) --\u003e\n\u003c!-- Pure CSS radio-input tabs. No JavaScript. 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}\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: 1.3em; font-weight: 300; color: var(--drf-gold); width: 1.5em; height: 1.5em; border-radius: 50%; background: var(--drf-grn-light); 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: #555; line-height: 1.7; }\n  .drf-faq-a \u003e div { padding: 0 0 1em; }\n  .drf-faq input:checked ~ .drf-faq-q::after { content: '−'; background: var(--drf-grn); color: #fff; }\n  .drf-faq input:checked ~ .drf-faq-a { max-height: 600px; }\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: 2px solid var(--drf-gold); margin: 1.5em 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"drf-wrap\"\u003e\n\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n  \u003cinput type=\"radio\" name=\"drf-pm-tabset\" id=\"drf-pm-tab1\" checked\u003e\n  \u003cinput type=\"radio\" name=\"drf-pm-tabset\" id=\"drf-pm-tab2\"\u003e\n  \u003cinput type=\"radio\" name=\"drf-pm-tabset\" id=\"drf-pm-tab3\"\u003e\n  \u003cinput type=\"radio\" name=\"drf-pm-tabset\" id=\"drf-pm-tab4\"\u003e\n\n  \u003cdiv class=\"drf-tab-labels\"\u003e\n    \u003clabel for=\"drf-pm-tab1\"\u003eOverview\u003c\/label\u003e\n    \u003clabel for=\"drf-pm-tab2\"\u003eThe Science\u003c\/label\u003e\n    \u003clabel for=\"drf-pm-tab3\"\u003eHow to Use\u003c\/label\u003e\n    \u003clabel for=\"drf-pm-tab4\"\u003eFAQ\u003c\/label\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"drf-panels\"\u003e\n\n  \u003cdiv class=\"drf-panel\" id=\"drf-pm-panel1\"\u003e\n    \u003ch2\u003eOrganic phosphorus meal — 15% phosphorus calcined plant meal for roots, flowers, fruit \u0026amp; all plants\u003c\/h2\u003e\n\n    \u003cdiv class=\"drf-badge-row\"\u003e\n      \u003cspan class=\"drf-badge drf-badge-green\"\u003e15% Phosphorus\u003c\/span\u003e\n      \u003cspan class=\"drf-badge drf-badge-green\"\u003eCalcined Plant Meal\u003c\/span\u003e\n      \u003cspan class=\"drf-badge drf-badge-green\"\u003eBone Meal Alternative\u003c\/span\u003e\n      \u003cspan class=\"drf-badge drf-badge-green\"\u003eVegan \u0026amp; Pet Safe\u003c\/span\u003e\n      \u003cspan class=\"drf-badge drf-badge-green\"\u003eOrganic Certified\u003c\/span\u003e\n      \u003cspan class=\"drf-badge drf-badge-green\"\u003eSlow Release\u003c\/span\u003e\n    \u003c\/div\u003e\n\n    \u003cp\u003ePhosphorus is the nutrient that builds roots and triggers reproduction. It is the central component of ATP — the molecule that powers every energy-requiring process in the plant — and the backbone of DNA and RNA. Without adequate phosphorus, roots remain shallow and weak, flowering is delayed or sparse, fruit set fails, and seeds are poorly developed. It is the nutrient most critical at two points in a plant's life: \u003cstrong\u003eestablishment\u003c\/strong\u003e (when roots are forming) and \u003cstrong\u003ereproduction\u003c\/strong\u003e (when flowers, fruit, and seed are developing).\u003c\/p\u003e\n    \u003cp\u003eThis phosphorus meal is a \u003cstrong\u003ecalcined plant meal\u003c\/strong\u003e — plant material that has been heat-treated to concentrate nutrients and improve availability — delivering 15% phosphorus in a slow-release form that becomes fully available over the growing season. It also contains \u003cstrong\u003enitrogen and potash\u003c\/strong\u003e as secondary nutrients, providing a more complete feed than single-nutrient phosphorus sources. Unlike bone meal — the traditional organic phosphorus source — this product is entirely plant-based: no animal by-products, no slaughterhouse waste, no risk of attracting foxes or rodents to your garden. It is the vegan, animal-free alternative to bone meal with a higher and more reliably available phosphorus content.\u003c\/p\u003e\n    \u003cp\u003eManufactured in the UK by an independent British fertiliser company, this is the most economical plant-based granular phosphorus fertiliser on the market. It is organic certified, safe for pets, birds, and children, and suitable for use on lawns, vegetables, fruit trees, roses, flower beds, shrubs, hedging, container plants, houseplants, and all garden plants.\u003c\/p\u003e\n\n    \u003cdiv class=\"drf-stats\"\u003e\n      \u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e15%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003ePhosphorus (P)\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003eSlow\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eRelease Profile\u003c\/span\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e3 months\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eActive in Soil\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\n    \u003ch3\u003eWhat phosphorus meal is used for in the garden\u003c\/h3\u003e\n    \u003cul class=\"drf-uses\"\u003e\n      \u003cli\u003e\n\u003cstrong\u003eRoot development at planting and transplanting\u003c\/strong\u003e — phosphorus is the nutrient most critical during root establishment; incorporating phosphorus meal into planting holes and seed beds gives new plants, transplants, trees, shrubs, and hedging the energy they need to build a strong root system from day one\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eFlowering and bloom production in roses and flower beds\u003c\/strong\u003e — phosphorus drives the transition from vegetative growth to reproductive growth; roses, perennials, annuals, and flowering shrubs produce more abundant and longer-lasting blooms when phosphorus is adequate during bud formation\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eFruit set and development in vegetables and fruit trees\u003c\/strong\u003e — tomatoes, peppers, courgettes, strawberries, apples, pears, and all fruiting crops require phosphorus for successful pollination, fruit set, and seed development; deficiency leads to poor fruit set and small, underdeveloped fruit\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eRoot crops — carrots, parsnips, beetroot, potatoes, and turnips\u003c\/strong\u003e — root vegetables are entirely dependent on strong root growth for yield; phosphorus meal applied before sowing or planting directly feeds the part of the plant you harvest\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eLawn establishment and repair\u003c\/strong\u003e — new lawns from seed or turf need phosphorus to build the dense root network that makes turf drought-resistant and hard-wearing; apply at seeding, turfing, or overseeding for faster establishment\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eBulb planting — tulips, daffodils, alliums, and all spring bulbs\u003c\/strong\u003e — bulbs planted in autumn benefit from phosphorus meal mixed into the planting hole; the phosphorus is available when root growth begins in late winter and supports strong flowering in spring\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eTree and shrub planting\u003c\/strong\u003e — newly planted trees, hedging, and shrubs establish faster with phosphorus in the root zone; mix into the backfill soil when planting bare-root or container-grown stock\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eContainer plants and houseplants\u003c\/strong\u003e — mix into potting soil before planting or apply as a top dressing to support root health and flowering in pots, containers, hanging baskets, and indoor plants\u003c\/li\u003e\n    \u003c\/ul\u003e\n\n    \u003ch3\u003eWhy plant-based phosphorus rather than bone meal?\u003c\/h3\u003e\n    \u003cdiv class=\"drf-compare\"\u003e\n      \u003cdiv class=\"drf-compare-box\"\u003e\n        \u003ch4\u003eCalcined Phosphorus Meal (this product)\u003c\/h4\u003e\n        \u003cul\u003e\n          \u003cli\u003e15% phosphorus from calcined plant meal — no animal by-products or slaughterhouse waste\u003c\/li\u003e\n          \u003cli\u003eSlow-release over the growing season — phosphorus is mineralised gradually by soil biology\u003c\/li\u003e\n          \u003cli\u003eDoes not attract foxes, badgers, dogs, or rodents — a significant practical advantage over bone meal\u003c\/li\u003e\n          \u003cli\u003eContains secondary nutrients: nitrogen and potash for a more complete feed\u003c\/li\u003e\n          \u003cli\u003eVegan-friendly, pet-safe, child-safe\u003c\/li\u003e\n          \u003cli\u003eOrganic certified — suitable for organic gardening and growing\u003c\/li\u003e\n          \u003cli\u003eConsistent phosphorus content — not variable like animal-derived sources\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"drf-compare-box\"\u003e\n        \u003ch4\u003eBone Meal (traditional organic phosphorus)\u003c\/h4\u003e\n        \u003cul\u003e\n          \u003cli\u003eDerived from ground animal bones — a slaughterhouse by-product\u003c\/li\u003e\n          \u003cli\u003eAttracts foxes, badgers, dogs, and rodents who dig it up — a common complaint\u003c\/li\u003e\n          \u003cli\u003ePhosphorus availability is variable and dependent on processing method\u003c\/li\u003e\n          \u003cli\u003eSlow to release in acid soils; very slow in neutral or alkaline soils\u003c\/li\u003e\n          \u003cli\u003eNot suitable for vegan or plant-based growing systems\u003c\/li\u003e\n          \u003cli\u003eCan carry a risk of prion contamination (BSE), though UK-sourced bone meal is regulated\u003c\/li\u003e\n          \u003cli\u003eOften lower in available phosphorus than the label suggests due to poor solubility\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"drf-panel\" id=\"drf-pm-panel2\"\u003e\n    \u003ch2\u003eThe science of phosphorus: root energy, flower initiation, and why it cannot move through soil\u003c\/h2\u003e\n    \u003ch3\u003ePhosphorus — the energy currency of every living cell\u003c\/h3\u003e\n    \u003cp\u003ePhosphorus occupies a unique position in plant biochemistry. It is the central atom in \u003cstrong\u003eadenosine triphosphate (ATP)\u003c\/strong\u003e — the molecule that stores and transfers energy in every living cell. Every metabolic process that requires energy — cell division, nutrient transport, protein synthesis, photosynthesis — depends on ATP and therefore on phosphorus. It is also a structural component of DNA, RNA, and cell membranes (phospholipids). No other nutrient is so fundamentally embedded in the machinery of life.\u003c\/p\u003e\n    \u003cp\u003ePhosphorus has a second critical role that is less well understood by gardeners: it is the nutrient that triggers the \u003cstrong\u003etransition from vegetative growth to reproductive growth\u003c\/strong\u003e. When phosphorus is adequate, plants flower earlier, set more fruit, and produce viable seed. When it is deficient, plants remain vegetative — they grow leaves but fail to flower prolifically. This is why phosphorus is the nutrient to focus on at planting (for roots) and at the onset of flowering (for fruit and bloom production).\u003c\/p\u003e\n    \u003chr class=\"drf-sep\"\u003e\n    \u003cdiv class=\"drf-compare\"\u003e\n      \u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003ePhosphorus in root development — why it matters most at planting\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eNew roots require enormous amounts of ATP for cell division, elongation, and membrane construction\u003c\/li\u003e\n\u003cli\u003ePhosphorus is immobile in soil — it does not move with water like nitrogen or potassium\u003c\/li\u003e\n\u003cli\u003eRoots must physically grow to the phosphorus; phosphorus does not come to the roots\u003c\/li\u003e\n\u003cli\u003ePlacing phosphorus in the root zone at planting gives new roots immediate access to the energy they need\u003c\/li\u003e\n\u003cli\u003eDeficiency at establishment permanently stunts root architecture — the plant never fully recovers\u003c\/li\u003e\n\u003cli\u003eThis is why phosphorus meal mixed into planting holes is so much more effective than surface application\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n      \u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003ePhosphorus in flowering and fruiting — the reproductive switch\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eFlower initiation requires a surge of energy — phosphorus-dependent ATP production\u003c\/li\u003e\n\u003cli\u003ePollen formation and pollination tube growth are among the most phosphorus-demanding processes in the plant\u003c\/li\u003e\n\u003cli\u003eFruit set and seed development require phosphorus for DNA replication in every dividing cell\u003c\/li\u003e\n\u003cli\u003eDeficiency during flowering results in poor fruit set, small fruit, and low seed viability\u003c\/li\u003e\n\u003cli\u003eCrops with high reproductive demand — tomatoes, peppers, strawberries, roses, fruit trees — respond strongly to adequate phosphorus\u003c\/li\u003e\n\u003cli\u003eUnlike nitrogen, phosphorus does not promote excessive foliage at the expense of flowering\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003chr class=\"drf-sep\"\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\u003ch4\u003eATP Synthesis \u0026amp; Energy Transfer\u003c\/h4\u003e\n\u003cp\u003eAdenosine triphosphate (ATP) is the universal energy molecule in all living cells. Every process that moves a molecule, divides a cell, or builds a structure requires ATP. Phosphorus is the element at the core of the high-energy bonds that make ATP functional. Adequate phosphorus in the root zone ensures that the plant's energy production matches its growth demands — from root tip elongation to flower petal expansion.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\u003ch4\u003eRoot Architecture \u0026amp; Establishment\u003c\/h4\u003e\n\u003cp\u003eRoot growth is the most phosphorus-intensive process in a young plant. Cell division at the root tip, membrane construction in new root hairs, and the energy cost of pushing through soil resistance all demand continuous ATP supply. Plants with adequate phosphorus at establishment develop deeper, more branched root systems that access more water and nutrients throughout their life. This early advantage compounds over the entire growing season.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\u003ch4\u003eFlower Initiation \u0026amp; Fruit Set\u003c\/h4\u003e\n\u003cp\u003eThe transition from leaf production to flower production is one of the most energy-demanding events in a plant's life cycle. Phosphorus drives this transition by supplying the ATP needed for flower bud differentiation, pollen grain formation, pollen tube growth during fertilisation, and the rapid cell division that follows successful pollination. Crops and ornamentals with adequate phosphorus flower earlier, set more fruit, and develop larger, better-formed blooms.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\u003ch4\u003eDNA, RNA \u0026amp; Cell Division\u003c\/h4\u003e\n\u003cp\u003ePhosphorus forms the backbone of DNA and RNA — the molecules that carry genetic information and direct protein synthesis. Every time a cell divides, the entire DNA complement must be replicated, consuming phosphorus. Rapidly growing tissue — root tips, flower buds, developing fruit, germinating seeds — has the highest rate of cell division and therefore the highest phosphorus demand. This is why deficiency symptoms always appear first in the newest, most actively growing parts of the plant.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\u003ch4\u003eSeed Development \u0026amp; Vigour\u003c\/h4\u003e\n\u003cp\u003eSeeds store phosphorus as phytate — a phosphorus reserve that fuels germination and early seedling growth before the roots are developed enough to absorb soil phosphorus. Plants grown with adequate phosphorus produce seeds with higher phytate reserves, resulting in more vigorous germination and stronger seedlings. For seed-saving gardeners and growers, phosphorus nutrition of the parent plant directly determines the quality of the next generation.\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\u003eMarschner, H. (2012). \u003cem\u003eMineral Nutrition of Higher Plants\u003c\/em\u003e (3rd ed.). Academic Press. [Phosphorus metabolism and function]\u003c\/li\u003e\n\u003cli\u003eHavlin, J.L. et al. (2014). \u003cem\u003eSoil Fertility and Fertilizers\u003c\/em\u003e (8th ed.). Pearson. [Phosphorus cycling and availability]\u003c\/li\u003e\n\u003cli\u003eVance, C.P. et al. (2003). Phosphorus acquisition and use: critical adaptations by plants for securing a non-renewable resource. \u003cem\u003eNew Phytologist\u003c\/em\u003e, 157(3), 423–447.\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\u003eRaghothama, K.G. (1999). Phosphate acquisition. \u003cem\u003eAnnual Review of Plant Physiology and Plant Molecular Biology\u003c\/em\u003e, 50, 665–693.\u003c\/li\u003e\n\u003cli\u003eShen, J. et al. (2011). Phosphorus dynamics: from soil to plant. \u003cem\u003ePlant Physiology\u003c\/em\u003e, 156(3), 997–1005.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"drf-panel\" id=\"drf-pm-panel3\"\u003e\n    \u003ch2\u003eHow to use phosphorus meal: application rates for vegetables, flowers, lawns, trees \u0026amp; all plants\u003c\/h2\u003e\n    \u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePlace phosphorus where the roots are\u003c\/span\u003e\u003cp\u003ePhosphorus is immobile in soil — it stays exactly where you put it and does not move with water. Surface-scattering phosphorus meal is far less effective than incorporating it into the root zone. For the best results, mix the granules into planting holes, seed beds, or the top 10–15 cm of soil rather than leaving them on the surface. For established plants and lawns where digging is impractical, apply as a top dressing and water in well — earthworm activity and natural soil movement will gradually incorporate it.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003ch3\u003eApplication rates\u003c\/h3\u003e\n    \u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003ePlanting holes — trees, shrubs, hedging \u0026amp; roses\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 50–100g mixed into backfill soil per planting hole  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once at planting\u003c\/div\u003e\n\u003cp\u003eMix the granules thoroughly into the backfill soil before planting bare-root or container-grown trees, shrubs, hedging, and roses. This places phosphorus directly in the root zone where it is immediately accessible to developing roots. The most effective single application you can make for establishment.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eVegetable beds — pre-sowing or pre-transplanting\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 50–150g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once per crop, worked into the soil before planting\u003c\/div\u003e\n\u003cp\u003eScatter over the bed and fork or rake into the top 10–15 cm before sowing or transplanting. Use the higher rate for root crops (carrots, parsnips, beetroot, potatoes) and fruiting crops (tomatoes, peppers, courgettes, strawberries). Use the lower rate for leafy crops where nitrogen is more critical than phosphorus.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFlower beds, borders \u0026amp; roses\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 75–125g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once in early spring, optionally again at midsummer for repeat-flowering roses\u003c\/div\u003e\n\u003cp\u003eApply in early spring as growth begins, working into the soil surface around established plants. For roses, a second application at midsummer supports the second flush of blooms. For annual flower beds, incorporate before planting out.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawns — new turf, overseeding \u0026amp; establishment\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 50–100g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once at establishment\u003c\/div\u003e\n\u003cp\u003eWork into the top 5 cm of prepared soil before laying turf or sowing grass seed. Phosphorus drives the root development that makes new lawns establish quickly, resist drought, and tolerate heavy use. For overseeding into existing lawns, apply at 50g\/m² after seeding and water in thoroughly.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eFruit trees and soft fruit\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 100–150g per m² under the canopy  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once in early spring\u003c\/div\u003e\n\u003cp\u003eScatter under the canopy drip line of apples, pears, plums, cherries, and soft fruit (strawberries, raspberries, blackcurrants, gooseberries). Fork lightly into the soil surface and water in. Supports fruit set and development during the critical spring flowering period.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eBulb planting\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e A generous pinch (5–10g) per planting hole  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once at planting\u003c\/div\u003e\n\u003cp\u003eMix into the base of each planting hole or trench when planting tulips, daffodils, alliums, crocuses, and all spring-flowering bulbs in autumn. The phosphorus will be available when roots begin growing in late winter and supports strong flowering in spring.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eContainers, pots \u0026amp; houseplants\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–4g per litre of soil (top dressing)  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 4–12 weeks during the growing season\u003c\/div\u003e\n\u003cp\u003eSprinkle evenly over the soil surface in pots, containers, hanging baskets, and indoor plants. Water in well. For mixing into potting soil before planting, use 2.5–5g per litre of growing medium. Particularly valuable for flowering houseplants and container roses.\u003c\/p\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eGeneral outdoor beds — maintenance\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 50–200g per m²  |  \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 6–12 weeks during the growing season\u003c\/div\u003e\n\u003cp\u003eFor established beds, borders, and garden areas as a general phosphorus maintenance application. Apply to moist soil and water in lightly to begin the release process. Adjust the rate based on crop demand — fruiting and root crops need more; leafy crops need less.\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 outdoor beds, weigh 50–200g per m² depending on the crop (see rates above). For containers, measure 1–4g per litre of soil. A tablespoon is approximately 17g; a teaspoon is approximately 5g.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eIncorporate into the root zone wherever possible.\u003c\/strong\u003e Fork or rake into the top 10–15 cm of soil for beds and borders. Mix into planting holes for trees, shrubs, and bulbs. For lawns and established plants, scatter on the surface and water in well.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eWater in after application.\u003c\/strong\u003e Moisture activates the microbial breakdown that releases the phosphorus. Apply to moist soil and water lightly after spreading.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eTime applications to plant need.\u003c\/strong\u003e The greatest phosphorus demand occurs at planting (roots) and flowering (reproduction). Focus applications on these two critical windows for maximum impact.\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eStore dry.\u003c\/strong\u003e Keep unused product sealed in a cool, dry place away from direct sunlight. The granules absorb moisture and will begin to break down if stored damp.\u003c\/li\u003e\n    \u003c\/ol\u003e\n    \u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWhen phosphorus matters most — the two critical windows\u003c\/span\u003e\u003cp\u003ePhosphorus demand is not constant through the growing season. It peaks at two points: \u003cem\u003eestablishment\u003c\/em\u003e (when new roots are forming after planting, transplanting, or sowing) and \u003cem\u003ereproduction\u003c\/em\u003e (when flowers are forming and fruit is setting). These are the windows where phosphorus meal makes the biggest difference. For most gardeners, this means applying at planting time in spring and again at the onset of flowering. In between, nitrogen and potassium are usually the more limiting nutrients.\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\u003cp\u003eFor a complete planting feed, combine phosphorus meal with \u003cstrong\u003eNitrogen Meal\u003c\/strong\u003e (12-3-4) for balanced root-and-shoot establishment. During the flowering and fruiting phase, pair with \u003cstrong\u003eSulphate of Potash\u003c\/strong\u003e to provide the potassium that drives flower size, fruit quality, and flavour development. For a ready-made balanced feed, use Dr Forest \u003cstrong\u003eBloom 2-8-4\u003c\/strong\u003e — which contains phosphorus meal as one of its phosphorus sources — during the reproductive phase. Add \u003cstrong\u003eSeaweed Powder\u003c\/strong\u003e as a biostimulant to improve nutrient uptake efficiency alongside any phosphorus application.\u003c\/p\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"drf-panel\" id=\"drf-pm-panel4\"\u003e\n    \u003ch2\u003eFrequently asked questions about phosphorus meal\u003c\/h2\u003e\n    \u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pm-faq1\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pm-faq1\"\u003eIs this a good alternative to bone meal?\u003c\/label\u003e\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes — it is the best plant-based alternative to bone meal available. It delivers 15% phosphorus from calcined plant meal, with no animal by-products, no slaughterhouse waste, and no risk of attracting foxes, badgers, or rodents to your garden — the single most common complaint about bone meal. The phosphorus availability is consistent and reliable, unlike bone meal which varies widely depending on processing method and soil pH. It is vegan-friendly, organic certified, and suitable for all the same applications as bone meal: planting, root development, flowering, and fruiting.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pm-faq2\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pm-faq2\"\u003eWhat is phosphorus meal made from?\u003c\/label\u003e\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eIt is a granular calcined plant meal — plant material that has been heat-treated to concentrate nutrients and improve their availability to plants. It contains no animal products, no bone, no blood meal, no feather meal, and no synthetic chemistry. Calcination is a controlled heating process that breaks down the plant material and makes the phosphorus and secondary nutrients (nitrogen and potash) more readily available in the soil. It is manufactured in the UK by an independent British fertiliser company and is certified for use in organic growing systems.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pm-faq3\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pm-faq3\"\u003eCan I use phosphorus meal on my lawn?\u003c\/label\u003e\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes — phosphorus is essential for lawn root development, particularly when establishing new lawns from seed or turf, overseeding, or repairing damaged areas. Apply 50–100g\/m² and work into the prepared soil before sowing or laying turf. For established lawns, phosphorus is less frequently needed than nitrogen, but an annual spring application at 50g\/m² supports root depth and drought resilience. Combine with Nitrogen Meal for a complete lawn renovation feed.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pm-faq4\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pm-faq4\"\u003eWill phosphorus meal help my roses flower better?\u003c\/label\u003e\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Phosphorus drives the transition from leaf growth to flower production and fuels the energy-intensive processes of bud formation, pollen development, and petal expansion. Roses given adequate phosphorus in early spring produce more flower buds, larger blooms, and a longer flowering season. Apply 75–125g\/m² in early spring and optionally again at midsummer for repeat-flowering varieties. Combine with Sulphate of Potash during flowering for the best bloom quality and colour.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pm-faq5\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pm-faq5\"\u003eIs it safe for pets, children, and wildlife?\u003c\/label\u003e\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. This is a plant-based product with no synthetic chemistry, no pesticides, and no toxic compounds. Unlike bone meal, it does not attract foxes, badgers, dogs, or rodents. It is safe for pets, birds, children, and soil organisms when used as directed. Once the granules have been watered in, the treated area is safe for normal use. As with any fertiliser, avoid direct ingestion and wash hands after handling.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pm-faq6\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pm-faq6\"\u003eWhy should I mix phosphorus into the soil rather than scatter it on top?\u003c\/label\u003e\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003ePhosphorus is the least mobile of all plant nutrients in soil. Unlike nitrogen and potassium, which dissolve and move with water, phosphorus binds tightly to soil particles and stays exactly where you place it. Surface-applied phosphorus can take months or years to reach the root zone through natural incorporation. Mixing it into the top 10–15 cm — or directly into planting holes — places it where roots can access it immediately. This is the single most important application technique for phosphorus and makes a measurable difference to establishment speed and flowering performance.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pm-faq7\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pm-faq7\"\u003eCan I use this for houseplants and container plants?\u003c\/label\u003e\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eYes. Use as a top dressing at 1–4g per litre of soil every 4–12 weeks during the growing season, or mix 2.5–5g per litre into potting soil before planting. Particularly valuable for flowering houseplants (orchids, African violets, peace lilies), container roses, and any potted plant where you want to encourage blooming rather than just leaf growth. Water in well after application.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"drf-faq\"\u003e\n\u003cinput type=\"checkbox\" id=\"drf-pm-faq8\"\u003e\u003clabel class=\"drf-faq-q\" for=\"drf-pm-faq8\"\u003eHow does phosphorus meal compare to rock phosphate?\u003c\/label\u003e\u003cdiv class=\"drf-faq-a\"\u003e\u003cdiv\u003eRock phosphate is a mined mineral that releases phosphorus very slowly — often over years rather than months — and its availability is heavily dependent on soil pH (it releases best in acid soils below pH 6.5). Phosphorus meal is a calcined plant meal that releases over the growing season through a combination of the calcination process (which makes nutrients more immediately available) and biological mineralisation, regardless of soil pH. For gardeners who need phosphorus available within the current season — for root establishment, flowering, or fruit set — phosphorus meal is the more responsive and reliable option. Dr Forest also sells Micronised Rock Phosphate (0-31-0) for long-term soil phosphorus building, which serves a different purpose.\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\n\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eFrom our phosphorus range\u003c\/h3\u003e\n\u003cul\u003e\n      \u003cli\u003e\n\u003ca href=\"\/products\/rock-phosphate-fertiliser-uk-31\"\u003eRock Phosphate Fertiliser\u003c\/a\u003e — 31% P, 46% Ca, micronised mineral powder\u003c\/li\u003e\n      \u003cli\u003e\n\u003ca href=\"\/products\/liquid-suspension-fertiliser-micronised-calcium-phosphate\"\u003eLiquid Phosphate Fertiliser\u003c\/a\u003e — calcium phosphate suspension for foliar and drench\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Dr Forest","offers":[{"title":"1.5kg","offer_id":39538177999035,"sku":null,"price":12.0,"currency_code":"GBP","in_stock":true},{"title":"4kg","offer_id":39538178031803,"sku":null,"price":23.99,"currency_code":"GBP","in_stock":true},{"title":"9kg","offer_id":44758257991867,"sku":null,"price":46.0,"currency_code":"GBP","in_stock":true},{"title":"15kg","offer_id":44758258024635,"sku":null,"price":64.49,"currency_code":"GBP","in_stock":true},{"title":"30kg","offer_id":57795185803638,"sku":null,"price":130.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/organic-phosphorus-fertiliser-two-brown-paper-bags-dr-881.png?v=1774785130","url":"https:\/\/www.drforest.co.uk\/products\/organic-phosphorus-fertiliser-15","provider":"Dr Forest","version":"1.0","type":"link"}