How Humic, Fulvic, Seaweed & Amino Set compares
Full guide and scienceFour soluble products
- Powder amino, not the liquid amino bottle
- Seaweed plus both humic fractions
- Four dilutions, no premix
The three-part trio
- The seaweed trio if you do not want the amino powder
- Liquid amino is a different product: Liquid Amino Acid Biostimulant
An organic foliar feed set: four soluble products in one
An organic foliar feed set: four soluble products that can all be diluted and sprayed on the leaf, or watered in at the root, sold as one. Foliar feeding is not a substitute for feeding the soil, and we would not pretend otherwise.
It is a way of getting small quantities of nutrient into a plant quickly, which is useful when growth is fast or when a soil is cold and roots are working slowly. What is in the set: Humic Acid Granules, 70% — 250 g, works in the soil, holds nutrients against leaching; Fulvic Acid Powder, 70% — 250 g, stays in solution and chelates; Brix+ Liquid Seaweed Biostimulant — 500 ml, a kelp-based plant biostimulant; Organic Amino Acid Fertiliser — 250 g, the dry powder for foliar spray fertilising. The amino acid component here is the powder, not the liquid biostimulant — worth saying, because we sell both. All four are handcrafted in Stockport. Each carries its own dilution rate, unchanged in the set. More in Biostimulants, Humic and Fulvic Acid and Bundles & Kits. Terms in the growing glossary.
Pick a size on the product form. Each size is a full set of the named packs below — not a single bag.
- Entry (250 g humic + 250 g fulvic + 250 g amino + 500 ml Brix+): Humic Acid Granules — 250 g; Fulvic Acid Powder — 250 g; Brix+ Liquid Seaweed — 500 ml; Organic Amino Acid Fertiliser — 250 g
- Mid (500 g humic + 500 g fulvic + 500 g amino + 1 litre Brix+): Humic Acid Granules — 500 g; Fulvic Acid Powder — 500 g; Brix+ Liquid Seaweed — 1 litre; Organic Amino Acid Fertiliser — 500 g
- Large (1 kg humic + 1 kg fulvic + 1 kg amino + 1 litre Brix+): Humic Acid Granules — 1 kg; Fulvic Acid Powder — 1 kg; Brix+ Liquid Seaweed — 1 litre; Organic Amino Acid Fertiliser — 1 kg
Rates stay on each component listing. The size picker only changes how much of each pack you get.
Each is also sold on its own — Humic Acid Granules · Fulvic Acid Powder · Liquid Seaweed Brix+ · Amino Acid Fertiliser
What a foliar feed set is for
- Foliar feed when roots are slow in cold soil
- Foliar spray fertilising in fast growth, at the dilutions on each listing
- Plant biostimulant (Brix+) on a seasonal rhythm
- Soil fractions (humic, fulvic) watered in between those sprays
Four soluble products
- Powder amino, not the liquid amino bottle
- Seaweed plus both humic fractions
- Four dilutions, no premix
The three-part trio
- The seaweed trio if you do not want the amino powder
- Liquid amino is a different product: Liquid Amino Acid Biostimulant
Dr Forest packs this in Stockport, Greater Manchester. Made with organic ingredients. Garden use, not a human amino supplement. Made by Growers. Backed by Science.
Foliar feed as a top-up, not as a soil replacement
Foliar feeding moves small amounts of nutrient through the leaf. It is useful when roots are cold or when you want a fast correction. It is a poor way to supply the bulk of a plant's nitrogen, phosphorus and potassium.
Amino acid fertiliser in this set is the dry powder. That is a foliar-route nitrogen and a chelating mix, not a protein shake. We keep human-nutrition wording off this page on purpose.
Humic, fulvic and seaweed sit in the same set because they are the three soluble companions people already tank-mix. Jar-test. Follow each listing.
Foliar route for small doses
Leaf uptake is real and limited. Bulk nutrition still comes from the soil.
Amino powder
The dry foliar product, not the liquid amino bottle.
Seaweed signal
Brix+ as a plant biostimulant at its own dilution.
Humic and fulvic underneath
Soil holding and solution movement.
References
- Canellas, L.P. et al. (2015). Humic and fulvic acids as biostimulants in horticulture. Scientia Horticulturae, 196.
- Nardi, S. et al. (2009). Physiological effects of humic substances on soil bacteria and mycorrhizae. Soil Biology and Biochemistry.
- Craigie, J.S. (2011). Seaweed extract stimuli in plant science and agriculture. Journal of Applied Phycology, 23(3).
- Khan, W. et al. (2009). Seaweed extracts as biostimulants of plant growth and development. Journal of Plant Growth Regulation, 28(4).
- Pei, B. et al. (2024). Seaweed fertiliser field meta-analysis. PLOS ONE, 19(7).
- Marschner, P. ed. (2012). Marschner's Mineral Nutrition of Higher Plants, 3rd ed. Academic Press.
How to use Humic, Fulvic, Seaweed & Amino Acid Set
Four products, four dilutions — read each listing. Soil: humic (and fulvic drench) at root rates. Foliar: Brix+, fulvic and amino powder at their foliar g or ml per litre; if you foliar humic, use only the humic page’s foliar rates. Jar-test any tank-mix; spray in soft light. This set does not replace All Purpose or a crop feed. Powder amino is in the box; liquid amino is a different bottle.
Do not dump all four into one strong can. Dilute each as its product page states. Foliar sprays go out in the morning or evening, not in hard sun.
If you wanted the liquid amino biostimulant, that is a different bottle. This set contains the powder.
Humic granules
Brix+
Amino powder
- Read each of the four listings before mixing.
- Jar-test if you tank-mix.
- Spray in soft light; water soil fractions in at the root.
- Liquid amino instead: Liquid Amino Acid Biostimulant.
Without amino: Humic, Fulvic & Seaweed Trio. Base feed still required: All Purpose 4-4-4.
Humic, Fulvic, Seaweed & Amino Acid Set: questions
It is a foliar feed set: four soluble products. Some are soil-first (humic). Follow each page.
The powder. The liquid is this bottle.
No.
No. Garden use only.
Yes.
Made with organic ingredients. We do not call it certified organic.
Stockport, Greater Manchester.
No. Use each on the schedule on its own listing.
Early morning or late evening, when it's cool and still, and never in full sun. Wet leaves dry slowly then, so the feed has longer to soak in, and there's less risk of leaf scorch. Mist both sides of the leaves until they're just wet, not dripping. Leave it at least a few hours before rain or watering overhead, and check each product's page for its own rate and interval.
Yes. At today's prices (October 2026) every size costs about 10–12% less than buying the same products separately. The smallest size is £41.95 against £47.46 bought one by one, a saving of £5.51. Check each product page for current single prices.
Not in the bundle. The sizes are fixed: 250 g humic + 250 g fulvic + 250 g amino + 500 ml Brix+; 500 g humic + 500 g fulvic + 500 g amino + 1 litre Brix+; 1 kg humic + 1 kg fulvic + 1 kg amino + 1 litre Brix+. If you want different amounts, buy the products on their own pages and mix the sizes as you like.
Yes. Each one is sold on its own: Humic Acid Granules, Fulvic Acid Powder, Liquid Seaweed, Organic Amino Acid Fertiliser.
