{"product_id":"fulvic-acid","title":"Fulvic Acid Powder | 70% Fulvic Biostimulant","description":"\u003c!-- Dr Forest — Fulvic Acid Powder Product Page (v1.0 Design System \/ v2 skill) --\u003e\u003c!-- Prefix: drf-fa- (fulvic acid) --\u003e\u003c!-- Structured data: the theme emits Product schema; FAQPage comes from the seo.faq_schema metafield (schema audit 2026-09-02) --\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c!-- 4-tab pure CSS layout. 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: #1B3D2F; 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: 1.95em; color: var(--drf-grn-dark); line-height: 1.25; margin-bottom: 0.6em; letter-spacing: -0.005em; }\n  .drf-wrap h3 { font-family: 'Cormorant Garamond', serif; font-weight: 500; font-size: 1.35em; color: var(--drf-grn-dark); margin: 1.6em 0 0.5em; }\n  .drf-wrap h4 { font-family: 'Jost', sans-serif; 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background: var(--drf-grn-dark); color: var(--drf-cream); border-color: var(--drf-grn-dark); }\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: 1.55; margin-top: 1.6em; padding-top: 1em; border-top: 1px solid var(--drf-border); }\n  .drf-refs h4 { color: var(--drf-grn-dark); margin-bottom: 0.5em; }\n  .drf-refs ol { padding-left: 1.4em; margin: 0; }\n  .drf-refs li { margin-bottom: 0.35em; }\n\n  \/* Hairline rule — v1.0: 200px, centred, gold *\/\n  .drf-sep { border: none; border-top: 1px solid var(--drf-gold); margin: 1.6em auto; width: 200px; }\n\u003c\/style\u003e\n\u003cdiv class=\"drf-wrap\"\u003e\n\u003cdiv class=\"drf-tabs-wrap\"\u003e\n\u003cinput checked id=\"drf-fa-tab1\" name=\"drf-fa-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-fa-tab2\" name=\"drf-fa-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-fa-tab3\" name=\"drf-fa-tabset\" type=\"radio\"\u003e \u003cinput id=\"drf-fa-tab4\" name=\"drf-fa-tabset\" type=\"radio\"\u003e\n\u003cdiv class=\"drf-tab-labels\"\u003e\n\u003clabel for=\"drf-fa-tab1\"\u003eOverview\u003c\/label\u003e \u003clabel for=\"drf-fa-tab2\"\u003eThe Science\u003c\/label\u003e \u003clabel for=\"drf-fa-tab3\"\u003eHow to Use\u003c\/label\u003e \u003clabel for=\"drf-fa-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-fa-panel1\"\u003e\n\u003ch2\u003eWhat is fulvic acid? Premium 70% fulvic acid powder, 99% soluble, for plants\u003c\/h2\u003e\n\u003cdiv class=\"drf-badge-row\"\u003e\n\u003cspan class=\"drf-badge\"\u003e70% Fulvic Acid\u003c\/span\u003e \u003cspan class=\"drf-badge\"\u003e99% Water Soluble\u003c\/span\u003e \u003cspan class=\"drf-badge\"\u003eEnzymatic Process\u003c\/span\u003e \u003cspan class=\"drf-badge\"\u003eFor Plants \u0026amp; Soil\u003c\/span\u003e \u003cspan class=\"drf-badge\"\u003eOF\u0026amp;G Approved\u003c\/span\u003e \u003cspan class=\"drf-badge\"\u003eNatural Chelator\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eGarden use only — not a human supplement\u003c\/span\u003e\n\u003cp\u003eFulvic acid is the low-molecular fraction of humic substances: a 70% powder that stays in solution, chelates nutrients and moves them into the plant. It is not a dietary supplement and is not formulated, tested or approved for human consumption. If you're looking for a fulvic acid supplement to take orally, this is not the product — those go through completely different food-grade processing, heavy-metal testing and human-use certification.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eFulvic acid is the smallest, most water-soluble fraction of humic substances\u003c\/strong\u003e — the carbon-rich molecules left behind when plant material has been broken down by microbes over geological timescales. The molecules are small enough (1,000 to 10,000 daltons) to pass through plant cell walls intact, which is why fulvic acid for plants works inside the leaf and root rather than only in the soil. As a biostimulant it chelates trace minerals into mobile, plant-available complexes, activates the H⁺-ATPase pump on root cell membranes, and triggers lateral root formation through auxin-like signalling. Most growers use fulvic and \u003ca href=\"\/products\/humic-acid-flakes\"\u003ehumic acid\u003c\/a\u003e together — fulvic for the fast plant-side response, humic flakes for the slower soil-side build.\u003c\/p\u003e\n\u003cp\u003eThis powder is produced by \u003cstrong\u003eenzymatic hydrolysis\u003c\/strong\u003e — biological enzymes at ambient temperature, gentler than the alkaline extraction used in cheaper products and preserving the heat-sensitive bioactive compounds that high-temperature processes destroy. \u003cstrong\u003e70% fulvic acid by mass, 99% soluble in cold water\u003c\/strong\u003e: it dissolves in seconds with no sediment, no insoluble fraction, and nothing to clog drip emitters or fine spray nozzles. Approved for organic production by OF\u0026amp;G (Organic Farmers \u0026amp; Growers). Handcrafted in Stockport.\u003c\/p\u003e\n\u003cdiv class=\"drf-stats\"\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e70%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eFulvic Content\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e99%\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eWater Soluble\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e\u0026lt;10k Da\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eMolecular Weight\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-stat\"\u003e\n\u003cspan class=\"drf-stat-number\"\u003e0.8 g\/L\u003c\/span\u003e\u003cspan class=\"drf-stat-label\"\u003eFoliar Rate, Tomato\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat fulvic acid does for plants\u003c\/h3\u003e\n\u003cul class=\"drf-uses\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eChelates trace minerals.\u003c\/strong\u003e Iron, zinc, manganese, copper and boron all move more readily when bound to fulvic acid. Most useful on chalky and high-pH soils where these elements precipitate quickly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnlocks bound phosphorus.\u003c\/strong\u003e Fulvic acid binds calcium and iron preferentially, freeing the phosphate they were holding. A practical fix for the lock-up that costs you yield on alkaline gardens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduces blossom-end rot in tomatoes.\u003c\/strong\u003e Keeps calcium mobile during fruit set so transpiration carries more of it through to the fruit (Suh et al. 2014, eliminated at 1.6 g\/L).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrives lateral root growth.\u003c\/strong\u003e Mimics auxin at low concentrations, induces lateral root formation through the same IAA19 gene pathway as the hormone itself (Trevisan et al. 2010).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimes drought tolerance.\u003c\/strong\u003e Pre-treated plants produce more SOD, POD, CAT and APX, the enzymes that clear reactive oxygen species when stress arrives (Zhu et al. 2024 on oat; Sun et al. 2020 on tea).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncreases yield in fruiting vegetables.\u003c\/strong\u003e 35% yield rise on greenhouse tomato at 2.7 g\/kg base dressing, with higher fruit calcium, iron and zinc (Zhang et al. 2021).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLifts flower number on roses and ornamentals.\u003c\/strong\u003e 40.5% more flowers per plant and 52.8% higher flower yield per hectare on Damask rose at 5 g\/L foliar (Ali et al. 2022).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproves nitrogen use efficiency.\u003c\/strong\u003e 27% NUE improvement and 17% increase in nitrogen uptake across pooled humic-acid trials in 28 countries (Ma et al. 2024 meta-analysis).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePasses through fine irrigation.\u003c\/strong\u003e 99% solubility means no residue, no blockages, and no filtration step before drip emitters or precision spray nozzles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eHumic and fulvic acid: how they differ and why you want both\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eFulvic acid powder — fast-acting, works in the plant\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMolecular weight 1,000–10,000 Da — small enough to cross cell walls\u003c\/li\u003e\n\u003cli\u003eSoluble at any pH; fully dissolved at working rates with no insoluble fraction\u003c\/li\u003e\n\u003cli\u003eActs as chelator and biostimulant inside leaf and root\u003c\/li\u003e\n\u003cli\u003eFoliar sprays, soil drenches, seed soaks, fertigation\u003c\/li\u003e\n\u003cli\u003eVisible response within 2–4 weeks of consistent use\u003c\/li\u003e\n\u003cli\u003eBest mixed with the rest of your feeding programme — fulvic is a carrier, not a feed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eHumic acid flakes — biological response builds over months\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMolecular weight 10,000–100,000 Da — too large for cell walls\u003c\/li\u003e\n\u003cli\u003eInsoluble below pH 2; dark brown to black solution\u003c\/li\u003e\n\u003cli\u003eLifts cation-exchange capacity, feeds soil microbes, structures aggregate\u003c\/li\u003e\n\u003cli\u003eBest as a base dressing or monthly soil drench\u003c\/li\u003e\n\u003cli\u003eEffects build over months and seasons rather than days\u003c\/li\u003e\n\u003cli\u003eNot effective as foliar — molecule is too big to penetrate the leaf cuticle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch3\u003eWhat sets a quality fulvic acid apart\u003c\/h3\u003e\n\u003cdiv class=\"drf-compare\"\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eEnzymatic hydrolysis (this product)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eBiological enzymes break down source material at ambient temperature\u003c\/li\u003e\n\u003cli\u003ePreserves heat-sensitive bioactive compounds — phenolics, amino-acid complexes, enzymatic cofactors\u003c\/li\u003e\n\u003cli\u003eMore expensive and slower to produce, but more bioactive in published trials\u003c\/li\u003e\n\u003cli\u003e70% fulvic content and 99% solubility, both declared on the label and verifiable on test\u003c\/li\u003e\n\u003cli\u003eApproved for organic production by OF\u0026amp;G\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-compare-box\"\u003e\n\u003ch4\u003eWhat to be wary of in cheaper imports\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eAlkaline extraction in potassium or sodium hydroxide at high temperature destroys heat-sensitive bioactives and introduces process-derived potassium\u003c\/li\u003e\n\u003cli\u003eLignosulphonate sold as fulvic acid is a paper-mill by-product from sulphite pulping — yellow-brown and water-soluble, but not the fulvic fraction of soil organic matter\u003c\/li\u003e\n\u003cli\u003eA 2025 AOAC International survey of 25 commercial fulvic products found only 14 contained genuine fulvic on UV testing\u003c\/li\u003e\n\u003cli\u003eVague label descriptors with no certificate of analysis are a red flag — ISO 19822 and AOAC 2024.07 (LAMAR) are the recognised test methods\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════════ TAB 2: THE SCIENCE ═══════════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-fa-panel2\"\u003e\n\u003ch2\u003eThe science of fulvic acid: chelation chemistry, the humic and fulvic acid family, hormesis, and the meta-analysis numbers\u003c\/h2\u003e\n\u003cp\u003eFulvic acid biostimulants are classed under EU regulation as substances that stimulate plant nutrition processes regardless of nutrient content, and the most useful synthesis of the evidence is the 2024 \u003cem\u003eAgronomy\u003c\/em\u003e meta-analysis by Ma and colleagues: 12% average yield increase on humic-acid amendments across 28 countries, 27% improvement in nitrogen use efficiency, and 17% increase in nitrogen uptake. Effects are biggest on soils with moderate pH and low-to-moderate organic matter — exactly the gardens where fulvic acid is most worth using.\u003c\/p\u003e\n\u003cp\u003eMechanistically, fulvic acid does three things. It carries an unusually high density of carboxyl (–COOH) and hydroxyl (–OH) groups for its size — these bind tightly to positively charged metal ions (iron, manganese, zinc, copper, calcium, magnesium) and form small chelated complexes that move freely through soil water and across plant cell membranes. Inside the plant, low-molecular-weight fragments interact with auxin signalling and trigger lateral root formation. Third — less obvious until you see the dose-response data — moderate concentrations of fulvic and humic acid prime the plant's antioxidant defences, stretching tolerance to drought and salinity. Too much suppresses the same response.\u003c\/p\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eSix mechanisms with the trial data behind each\u003c\/h3\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e01\u003c\/span\u003e\n\u003ch4\u003eChelation of trace minerals\u003c\/h4\u003e\n\u003cp\u003eCarboxyl and hydroxyl groups bind metal cations to form small soluble complexes. The complex stays mobile in soil solution across a wide pH range, reaches root surfaces, and crosses cell membranes intact. The same mechanism also lets fulvic acid bias uptake away from sodium and chloride on saline soils — barley grain yield rose 64.7% over the salt-stressed control on saline land in Egypt, with reduced phosphorus rates and no yield loss.\u003c\/p\u003e\n\u003cspan class=\"drf-mech-cite\"\u003eAlsudays et al. 2024, BMC Plant Biology 24: 191\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e02\u003c\/span\u003e\n\u003ch4\u003eH⁺-ATPase activation in roots\u003c\/h4\u003e\n\u003cp\u003eThe plasma membrane H⁺-ATPase is the proton pump that drives nutrient uptake by acidifying the root surface. Humic substances isolated from earthworm compost activated this pump in maize roots at very low concentrations (4 mg carbon per litre), enhancing root elongation and lateral root emergence. The finding has replicated across maize, \u003cem\u003eArabidopsis\u003c\/em\u003e and rice.\u003c\/p\u003e\n\u003cspan class=\"drf-mech-cite\"\u003eCanellas et al. 2002, Plant Physiology 130(4): 1951–1957\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e03\u003c\/span\u003e\n\u003ch4\u003eAuxin-mimetic lateral root induction\u003c\/h4\u003e\n\u003cp\u003eTrevisan and colleagues showed in 2010 that humic substances induce lateral root formation in \u003cem\u003eArabidopsis\u003c\/em\u003e through the same gene-expression signature — the IAA19 gene and the DR5 auxin-response element — as a low dose of auxin itself. The flush of lateral roots and longer root hairs is what most growers notice first: a denser, fuzzier root ball within two to four weeks of starting to use fulvic acid.\u003c\/p\u003e\n\u003cspan class=\"drf-mech-cite\"\u003eTrevisan et al. 2010, Plant, Cell \u0026amp; Environment 33(1): 145–156\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e04\u003c\/span\u003e\n\u003ch4\u003eAntioxidant priming for drought tolerance\u003c\/h4\u003e\n\u003cp\u003eDrought stress floods cells with reactive oxygen species. Plants pre-treated with fulvic acid carry higher activity of superoxide dismutase, peroxidase, catalase and ascorbate peroxidase, and lower accumulation of malondialdehyde (the cell-membrane damage marker). Drought-stressed oat retained higher relative water content and chlorophyll under the same stress as the untreated controls. The treatment has to go on before the stress arrives, not after.\u003c\/p\u003e\n\u003cspan class=\"drf-mech-cite\"\u003eZhu et al. 2024, Frontiers in Plant Science 15: 1439747\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e05\u003c\/span\u003e\n\u003ch4\u003eCalcium delivery to fruit, blossom-end rot\u003c\/h4\u003e\n\u003cp\u003eFoliar fulvic acid at 0.8 g\/L on greenhouse tomatoes increased plant height, fresh and dry weight and marketable yield through more medium and large fruit. Blossom-end rot was greatly reduced at all rates and eliminated entirely at 1.6 g\/L. Cracking was also reduced. The mechanism is the same as for the trace minerals: keep calcium mobile and chelated, more of it gets to the fruit on the transpiration stream.\u003c\/p\u003e\n\u003cspan class=\"drf-mech-cite\"\u003eSuh, Yoo \u0026amp; Suh 2014, Hort. Environ. Biotechnol. 55(6): 455–461\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-mech\"\u003e\n\u003cspan class=\"drf-mech-num\"\u003e06\u003c\/span\u003e\n\u003ch4\u003ePhenolic and antioxidant content in produce\u003c\/h4\u003e\n\u003cp\u003eThe flavour, colour and nutritional quality of fruit comes from secondary metabolites: phenolic acids, flavonoids, carotenoids. Foliar fulvic at 1.5 g\/L on mature pistachio at kernel formation raised phenolic compounds in the harvested kernel by 31.8% and flavonoid content by 24.5%. Catalase, ascorbate peroxidase and SOD activity all rose substantially. The same direction of effect shows up across the fruit and ornamental literature.\u003c\/p\u003e\n\u003cspan class=\"drf-mech-cite\"\u003eNikoogoftar-Sedghi et al. 2024, BMC Plant Biology 24: 241\u003c\/span\u003e\n\u003c\/div\u003e\n\u003chr class=\"drf-sep\"\u003e\n\u003ch3\u003eThe dose-response curve is non-linear\u003c\/h3\u003e\n\u003cp\u003eFulvic acid does not behave like a fertiliser. With nitrogen fertiliser, more gives more leaves up to the salt-damage point. With fulvic acid, the effective dose window is narrow, and going past it actively suppresses the response. The Suh tomato trial shows it cleanly: 0.8 g\/L produced larger plants and more fruit; 1.6 g\/L produced smaller plants and smaller fruit. Same season, same cultivar. Rice seedlings: 0.05 g\/L stimulated root growth, 0.5 g\/L inhibited it. Pistachio: 1.5 g\/L was the optimum for phenolic content; 4.5 g\/L gave smaller gains. Researchers call this hormesis. The practical rule for fulvic acid dosage is to start at the low end of the published range and only step up if a few cycles of consistent application aren't producing visible results.\u003c\/p\u003e\n\u003cdiv class=\"drf-pullquote\"\u003eA modest amount stimulates. Too much inhibits. The relationship is a curve, not a straight line.\u003c\/div\u003e\n\u003cdiv class=\"drf-refs\"\u003e\n\u003ch4\u003eReferences\u003c\/h4\u003e\n\u003col\u003e\n\u003cli\u003eMa, Y. et al. (2024). Meta-analysis of humic-acid amendments on crop yield and nitrogen use efficiency. \u003cem\u003eAgronomy\u003c\/em\u003e 14(12): 2763.\u003c\/li\u003e\n\u003cli\u003eSuh, H.Y., Yoo, K.S., Suh, S.G. (2014). Effect of foliar application of fulvic acid on plant growth and fruit quality of tomato. \u003cem\u003eHort. Environ. Biotechnol.\u003c\/em\u003e 55(6): 455–461.\u003c\/li\u003e\n\u003cli\u003eZhang, P. et al. (2021). Dose-dependent application of straw-derived fulvic acid on yield and quality of tomato plants. \u003cem\u003eFrontiers in Plant Science\u003c\/em\u003e 12: 736613.\u003c\/li\u003e\n\u003cli\u003eAli, E.F. et al. (2022). Ginger extract and fulvic acid foliar applications on damask rose. \u003cem\u003ePlants\u003c\/em\u003e 11(3): 412.\u003c\/li\u003e\n\u003cli\u003eNikoogoftar-Sedghi, M. et al. (2024). Fulvic acid foliar application on pistachio. \u003cem\u003eBMC Plant Biology\u003c\/em\u003e 24: 241.\u003c\/li\u003e\n\u003cli\u003eZhu, S. et al. (2024). Fulvic acid alleviating drought stress in oat. \u003cem\u003eFrontiers in Plant Science\u003c\/em\u003e 15: 1439747.\u003c\/li\u003e\n\u003cli\u003eSun, J. et al. (2020). Fulvic acid in tea plants under drought stress. \u003cem\u003eBMC Genomics\u003c\/em\u003e 21(1): 411.\u003c\/li\u003e\n\u003cli\u003eCanellas, L.P. et al. (2002). Humic acids isolated from earthworm compost enhance root elongation and plasma membrane H⁺-ATPase activity in maize. \u003cem\u003ePlant Physiology\u003c\/em\u003e 130(4): 1951–1957.\u003c\/li\u003e\n\u003cli\u003eTrevisan, S. et al. (2010). Humic substances induce lateral root formation in \u003cem\u003eArabidopsis\u003c\/em\u003e through auxin-responsive pathways. \u003cem\u003ePlant, Cell \u0026amp; Environment\u003c\/em\u003e 33(1): 145–156.\u003c\/li\u003e\n\u003cli\u003eAlsudays, I.M. et al. (2024). Potassium humate and fulvic acid on saline-soil barley with reduced phosphorus. \u003cem\u003eBMC Plant Biology\u003c\/em\u003e 24: 191.\u003c\/li\u003e\n\u003cli\u003eZhang, X., Schmidt, R.E. (1999). Antioxidant response to hormone-containing product in Kentucky bluegrass subjected to drought. \u003cem\u003eCrop Science\u003c\/em\u003e 39(2): 545–551.\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-fa-panel3\"\u003e\n\u003ch2\u003eHow to apply fulvic acid in the UK garden: rates by crop, with the published trial behind each one\u003c\/h2\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eUse rainwater where you can\u003c\/span\u003e\n\u003cp\u003eHard UK tap water carries calcium and magnesium that bind to fulvic acid before it reaches the leaf, lowering the bioactivity you paid for. Rainwater is the cleanest carrier for any fulvic acid spray. If you only have hard tap water, leave it standing 24 hours to let chlorine outgas, or pre-acidify slightly with a few drops of dilute citric acid. Mix fresh, use within 24 hours — diluted fulvic acid is a substrate for bacteria and a sprayer left for two weeks turns cloudy.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eMixing\u003c\/h3\u003e\n\u003col class=\"drf-steps\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure on a digital scale.\u003c\/strong\u003e Rates are in grams per litre. A level teaspoon of this powder is roughly 2.5 g, but the dose-response curve is narrow enough that scale weighing pays off. A quarter teaspoon is approximately 0.6 g; half a teaspoon roughly 1.2 g.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-dissolve in a small amount of warm water.\u003c\/strong\u003e 1 g in 30 ml, shaken in a jar for 30–60 seconds, dissolves fully — the 99% solubility means there should be no visible particles or grit at the bottom. Do not add powder direct to a full sprayer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdd the concentrate to the rest of the volume.\u003c\/strong\u003e Pour the dissolved fulvic into the watering can, spray tank or reservoir and stir briefly. At 1 g\/L the working solution is fully dissolved with no settling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdd the rest of the feed last.\u003c\/strong\u003e Fulvic is the carrier — add other feeds, seaweed extract or trace mineral sprays after the fulvic is in solution. Avoid mixing with strongly alkaline products such as some lime washes or high-pH potassium silicate, which can precipitate the chelated complexes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApply within 24 hours.\u003c\/strong\u003e The diluted solution doesn't keep. The dry powder, sealed, is stable for years.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cdiv class=\"drf-callout drf-callout-dark\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eHard rule on dose\u003c\/span\u003e\n\u003cp\u003eThe dose-response curve is non-linear and going past the optimum reverses the effect. \u003cstrong\u003e0.8 g\/L beats 1.6 g\/L on tomatoes.\u003c\/strong\u003e Start at the low end of each range below. Step up only if a few applications haven't produced visible results — and then look at water quality, application timing and soil condition before assuming the dose was the problem.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFoliar spray rates\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eTomato, pepper, aubergine\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 0.8 g\/L | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 2–3 weeks from transplant through to fruit set\u003c\/div\u003e\n\u003cp\u003eThe most-cited foliar rate in the literature. Greenhouse trials at 0.8 g\/L produced larger plants, more medium and large fruit, and reduced blossom-end rot at every test rate. Spray early morning or late evening on both leaf surfaces.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eSuh, Yoo \u0026amp; Suh 2014\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLettuce, brassicas, salad leaves\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 0.5–1 g\/L | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 3–4 weeks during active growth\u003c\/div\u003e\n\u003cp\u003eLower foliar rates work best on leafy crops. The aim is steady supply rather than push.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003ePlant Sci Today 2025 review of 100+ studies\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eStrawberry, soft fruit\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 Pre-flower and at green-fruit stage\u003c\/div\u003e\n\u003cp\u003eTwo well-timed sprays carry more weight than monthly maintenance through the flowering window.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eRoses and ornamentals\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–5 g\/L | \u003cstrong\u003eFrequency:\u003c\/strong\u003e April pre-flower, then monthly through summer\u003c\/div\u003e\n\u003cp\u003eThe Damask rose trial used 1, 3 and 5 g\/L; 5 g\/L gave the strongest response, lifting flower number per plant by 40.5% and flower yield per hectare by 52.8%. Garden roses are less responsive than the cut-flower cultivars in the trial, but the direction of effect is consistent.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eAli et al. 2022\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eApple and tree fruit\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1.5–3 g\/L | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Bud-break, fruit-set, mid-summer\u003c\/div\u003e\n\u003cp\u003ePistachio trials show 1.5 g\/L is the optimum for phenolic and antioxidant content in the kernel. Higher rates flatten or reverse the response.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eNikoogoftar-Sedghi et al. 2024\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eLawn \/ turfgrass (drought priming)\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 0.5–1 g\/L | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Spring pre-stress, then monthly through summer\u003c\/div\u003e\n\u003cp\u003eThe benefit on turf shows up under stress, not on a healthy lawn already getting enough food and water. Apply 3 to 4 weeks before expected drought (May onwards in southern England, June in the north).\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eZhang \u0026amp; Schmidt 1999\u003c\/span\u003e\n\u003c\/div\u003e\n\u003ch3\u003eSoil drench rates\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003ePots and containers (15–25 cm)\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1 g\/L | \u003cstrong\u003eVolume:\u003c\/strong\u003e 250–500 ml per pot | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 3–4 weeks\u003c\/div\u003e\n\u003cp\u003eApply to moist (not dry) soil at the root zone. Pre-water if needed so the drench doesn't channel straight through.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003e30 cm+ pots and grow bags\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1–2 g\/L | \u003cstrong\u003eVolume:\u003c\/strong\u003e 500–1,000 ml | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Every 3–4 weeks\u003c\/div\u003e\n\u003cp\u003eWet the rooting zone but don't soak straight through. For a 30 cm pot, half a litre of working solution is about right.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eOpen-ground vegetable beds\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 1 g\/L | \u003cstrong\u003eVolume:\u003c\/strong\u003e 5 litres per m² | \u003cstrong\u003eFrequency:\u003c\/strong\u003e At planting, then every 4 weeks\u003c\/div\u003e\n\u003cp\u003eRoughly 5 g of powder per square metre per drench cycle. The field-scale benchmark from the saline-alkali processing tomato trial is 50 kg\/ha, which peaked at 50 and declined at 75 (the dose-response curve again). The back-garden equivalent is 5 g\/m². Use 1 g\/L in solution rather than spreading powder dry — the chelation effect needs the fulvic in solution.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eIrrigation Science 2025\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eNew tree or shrub at planting\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 2 g\/L | \u003cstrong\u003eVolume:\u003c\/strong\u003e 5–10 litres at the base | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Once at planting\u003c\/div\u003e\n\u003cp\u003eAuxin-like stimulation of lateral roots begins within 48–72 hours. Significantly reduces transplant shock and accelerates establishment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eEstablished perennial border\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 2 g\/L | \u003cstrong\u003eVolume:\u003c\/strong\u003e 2 litres per plant | \u003cstrong\u003eFrequency:\u003c\/strong\u003e Spring and after flowering\u003c\/div\u003e\n\u003cp\u003eMost useful on chalky beds where iron, zinc and phosphorus lock-up are recurrent issues.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eSeed soak rates\u003c\/h3\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eSeed pre-soak before sowing\u003c\/h4\u003e\n\u003cdiv class=\"drf-rate-meta\"\u003e\n\u003cstrong\u003eRate:\u003c\/strong\u003e 80–160 mg\/L (0.08–0.16 g\/L) | \u003cstrong\u003eTime:\u003c\/strong\u003e 4–6 hours (no longer than 12)\u003c\/div\u003e\n\u003cp\u003eTomato seeds soaked at 80–160 mg\/L (0.08–0.16 g\/L) showed higher germination, longer radicles and greater seedling biomass than water-soaked controls. Seed soaking uses a far weaker solution than a foliar spray or drench, and there is no published evidence that stronger soaks do more — the dose-response work points the other way, so hold the concentration in this band and vary the soak \u003cem\u003etime\u003c\/em\u003e by seed type instead. \u003cstrong\u003eEasy way to hit the rate:\u003c\/strong\u003e dissolve 1 g of powder in 1 litre of water to make a 1 g\/L stock, then dilute about 100 ml of that stock into 900 ml of water for roughly 100 mg\/L. Fine seeds (lettuce, brassicas, herbs): 4 hours. Medium seeds (tomato, pepper, beetroot): 4–6 hours. Large seeds (peas, beans, cucurbits): 6–8 hours. Hard-coated slow germinators (carrot, parsnip, parsley): up to 12 hours. Soak once, before sowing, and don't soak past 12 hours — seeds need oxygen to germinate.\u003c\/p\u003e\n\u003cspan class=\"drf-rate-cite\"\u003eZhang et al. 2021\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-rate\"\u003e\n\u003ch4\u003eDrip irrigation \/ fertigation\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 Every 2–4 weeks\u003c\/div\u003e\n\u003cp\u003e99% solubility means no residue, no blockages, no filtration step. Add the pre-dissolved concentrate to the reservoir after the main nutrient solution is mixed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eFive common mistakes\u003c\/h3\u003e\n\u003cdiv class=\"drf-callout\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003eWhat ruins a sound protocol\u003c\/span\u003e\n\u003cp\u003e\u003cstrong\u003eSpraying onto hot leaves at midday.\u003c\/strong\u003e The spray dries before the cuticle absorbs it. Worst case, dilute solution concentrates as it dries and leaves droplet burn marks. Apply early morning or late evening.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMixing in hard tap water without adjusting.\u003c\/strong\u003e Calcium and magnesium in hard UK water lock up part of the fulvic before it reaches the leaf. Use rainwater, or stand tap water 24 hours and pre-acidify with a few drops of dilute citric acid.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStoring diluted solution.\u003c\/strong\u003e Diluted fulvic supports bacterial growth. Mix what you need, use it within 24 hours, pour the rest on the soil.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTreating it as a rescue product.\u003c\/strong\u003e Fulvic is a priming and uptake input. A wilting drought-stressed plant won't recover faster from a fulvic spray. The plant that won't wilt at all is the one that was sprayed three weeks earlier.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUsing it on a well-fed plant in isolation.\u003c\/strong\u003e Fulvic is the carrier. If there are no nutrients in the soil for it to chelate, the chelation does nothing. Use it alongside an organic fertiliser, a compost-fed soil, or a regular liquid feed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-callout drf-callout-gold\"\u003e\n\u003cspan class=\"drf-callout-title\"\u003ePairs well with\u003c\/span\u003e\n\u003cp\u003eFulvic acid is a carrier, not a feed — it works hardest alongside the rest of the programme. Pair with our \u003cstrong\u003eHumic Acid Flakes\u003c\/strong\u003e as a monthly soil drench for the slower soil-side benefit; together the fulvic humic acid pairing is the most studied combination in the literature. Add the powder to any micronutrient feed where iron, zinc or manganese absorption is limiting. Tank-mix with our \u003ca href=\"\/products\/organic-seaweed-powder-concentrated-100-soluble-fertiliser-dr\"\u003eSeaweed Extract Powder\u003c\/a\u003e for complementary biostimulant mechanisms. For long-term reading, our blog covers \u003ca href=\"https:\/\/www.drforest.co.uk\/blogs\/the-dr-forest-blog\/what-is-fulvic-acid\"\u003ewhat fulvic acid is\u003c\/a\u003e and \u003ca href=\"https:\/\/www.drforest.co.uk\/blogs\/the-dr-forest-blog\/fulvic-acid-benefits-plants\"\u003eeight peer-reviewed benefits\u003c\/a\u003e in more detail.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- ═══════════════ TAB 4: FAQ ═══════════════ --\u003e\n\u003cdiv class=\"drf-panel\" id=\"drf-fa-panel4\"\u003e\n\u003ch2\u003eFrequently asked questions about fulvic acid powder\u003c\/h2\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq-supp\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq-supp\"\u003eCan I take this as a fulvic acid supplement?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eNo. This is a garden biostimulant for plants and soil — not a dietary supplement and not approved for human consumption. It hasn't been processed, tested or certified for human use, including the heavy-metal and microbial testing that food-grade products go through. If you want fulvic acid as a mineral supplement to take orally, look for a product specifically formulated and certified for human consumption (those will declare GMP manufacturing, food-grade processing and full heavy-metal testing on the certificate of analysis). Our fulvic acid powder is for plant and soil use only.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq0\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq0\"\u003eWhat is fulvic acid?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eFulvic acid is the smallest, most water-soluble fraction of humic substances — the carbon-rich molecules left behind when plant material has been broken down by microbes over geological timescales. The molecules are typically 1,000 to 10,000 daltons across, small enough to pass through plant cell walls, which is why fulvic acid works inside the plant rather than only in the soil. It chelates trace minerals into mobile, plant-available complexes, activates the H⁺-ATPase pump on root cell membranes, and triggers lateral root formation through auxin-like signalling. Used as a foliar spray, soil drench, seed soak, or addition to fertigation programmes.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq1\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq1\"\u003eHow much fulvic acid do you put per litre of water?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eFor most garden uses, 0.5 to 1 g per litre as a foliar spray or 1 to 2 g per litre as a soil drench. The most-cited tomato research (Suh et al. 2014) used 0.8 g\/L foliar at 10, 20 and 30 days after transplant. For ornamentals and roses the published range is 1 to 5 g\/L. Don't exceed 2 g\/L on edibles without specific evidence for that crop. Seed soaking is much weaker — 80 to 160 mg\/L (0.08 to 0.16 g\/L) for 4 to 6 hours before sowing, not the gram-per-litre rates used for foliar sprays and drenches.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq2\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq2\"\u003eCan you apply too much fulvic acid?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes, and this is the most common mistake. The dose-response curve is non-linear. The Suh tomato trial showed 0.8 g\/L significantly increased fruit yield and plant size, while 1.6 g\/L (double the rate) produced smaller plants and smaller fruit. Rice seedling work shows the same pattern at lower concentrations: 0.05 g\/L stimulates root growth, 0.5 g\/L inhibits it. Researchers call this hormesis. Stick to published rates, start at the low end, and only step up if a few applications haven't produced visible results.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq3\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq3\"\u003eHow is this different from cheap fulvic acid imports?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eMethod and specs. This powder is produced by enzymatic hydrolysis — biological enzymes at ambient temperature — rather than alkaline extraction in hot potassium or sodium hydroxide, which destroys many heat-sensitive bioactive compounds and introduces process-derived potassium. The specs are also declared and verifiable: 70% fulvic acid by mass, 99% soluble in cold water, OF\u0026amp;G organic approved. Cheap \"fulvic acid\" imports are often lignosulphonate (paper-mill by-products) sold under the same name. A 2025 AOAC International survey of 25 commercial fulvic products found only 14 contained genuine fulvic acid on UV testing. Always look for declared specs and a certificate of analysis (ISO 19822 or AOAC 2024.07 LAMAR are the recognised test methods).\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq4\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq4\"\u003eHow does fulvic acid differ from humic acid?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eThe two are the same chemical family. They do different jobs because of their different sizes. Fulvic molecules are 1,000 to 10,000 daltons across, small enough to cross plant cell walls and work inside the plant. Humic molecules are ten times larger, can't cross cell walls, and work in the soil — building cation-exchange capacity, structuring aggregate, feeding microbes. The shorthand most growers use: humic acid mostly improves the soil, fulvic acid mostly improves the plant. They work best together. A monthly humic flake drench plus fulvic added to your foliar feeds is a typical UK garden setup.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq5\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq5\"\u003eWhy does the water I mix it with matter?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eHard UK tap water carries calcium and magnesium ions that bind to fulvic acid before it reaches the plant. The chelation effect you paid for gets used up on the calcium in your tap water. Rainwater is best. If only tap water is available, stand it for 24 hours to let chlorine outgas, then pre-acidify slightly with a few drops of dilute citric acid solution. The same logic applies to most liquid feeds you'd tank-mix with the fulvic.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq6\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq6\"\u003eHow long does it take to see results?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eRoot effects (denser, fuzzier root mass) usually appear within 2 to 4 weeks of consistent application. Drought-tolerance priming needs 3 to 4 weeks before the stress event to take effect; treatment after the plant is already wilting won't help. Yield and quality effects on fruit and flowers appear over a full growing season, since they depend on cumulative nutrient uptake and stress avoidance through the cycle. Don't expect dramatic week-one transformations on a plant that is already well-fed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq7\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq7\"\u003eCan I mix fulvic acid with other fertilisers?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes, and the published trials repeatedly show combined applications outperform either input alone. Fulvic tank-mixes well with most liquid organic feeds, seaweed extracts, amino-acid biostimulants and trace mineral sprays — it's the carrier that makes the rest work harder. Avoid mixing with strongly alkaline products such as some lime washes or high-pH potassium silicate, which can precipitate the chelated complexes. Add the fulvic to water first, dissolve fully, then add the rest of the feed.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq8\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq8\"\u003eIs it safe for children, pets, bees and edible crops?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eYes for all those — when used as a garden input. Fulvic acid is a naturally occurring organic compound found in fertile soils. Non-toxic to mammals, birds, bees and soil organisms at any realistic application rate. Approved for organic production by OF\u0026amp;G (Organic Farmers \u0026amp; Growers). No withholding period for the edible crops you've sprayed or drenched — once the application has dried in or been absorbed, the garden is safe for children, pets and wildlife as normal. Note that this is a garden product, not a dietary supplement — see the supplement question above.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq9\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq9\"\u003eHow should I store the powder?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eSealed, in a cool dry place out of sunlight. The powder is hygroscopic — it absorbs moisture from the air — and clumps if exposed to humidity. Clumping doesn't affect efficacy but makes weighing harder. Reseal after each use. Dry powder kept this way is stable for years. We've used powder from sealed bags 3 to 4 years old with no measurable loss of bioactivity. Working solution, on the other hand, supports microbial growth once diluted — mix what you need and use within 24 hours.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"drf-faq\"\u003e\n\u003cinput id=\"drf-fa-faq10\" type=\"checkbox\"\u003e \u003clabel class=\"drf-faq-q\" for=\"drf-fa-faq10\"\u003eWhere is it made? Is this organic fulvic acid?\u003c\/label\u003e\n\u003cdiv class=\"drf-faq-a\"\u003e\n\u003cdiv\u003eHandcrafted in Stockport, Greater Manchester. The powder is produced by enzymatic hydrolysis to 70% fulvic acid by mass and 99% solubility in cold water, supplied in compostable packaging. As an organic fulvic acid powder it carries OF\u0026amp;G (Organic Farmers \u0026amp; Growers) approval — the standard the UK organic trade uses for input certification — so this is among the few fulvic acid UK growers can use under organic certification. Our liquid fulvic acid (a separate product) is Soil Association approved.\u003c\/div\u003e\n\u003c\/div\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":"60g","offer_id":55424974193014,"sku":"DF-FULVIC-60G","price":6.49,"currency_code":"GBP","in_stock":true},{"title":"120g","offer_id":55424974225782,"sku":"DF-FULVIC-120G","price":7.99,"currency_code":"GBP","in_stock":true},{"title":"250g","offer_id":55424974258550,"sku":"DF-FULVIC-250G","price":12.99,"currency_code":"GBP","in_stock":true},{"title":"500g","offer_id":55424974291318,"sku":"DF-FULVIC-500G","price":19.99,"currency_code":"GBP","in_stock":true},{"title":"1kg","offer_id":55424974324086,"sku":"DF-FULVIC-1","price":35.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0049\/8194\/8504\/files\/organic-fulvic-acid-powder-humic-brown-resealable-pouch-dr-forest-957.webp?v=1785512767","url":"https:\/\/www.drforest.co.uk\/products\/fulvic-acid","provider":"Dr Forest","version":"1.0","type":"link"}