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Seaweed Extract Flake
| Ingredients | Content I |
| Alginic Acid | ≥18% |
| Organic Matter | ≥40.0% |
| Total Nitrogen (N) | 0-1% |
| Phosphorus (P2O5) | 0-1% |
| Potassium (K2O) | ≥16% |
| Mannitol | / |
| Microelements (Fe/Zn/B/Mo) | ≥0.5% |
| Natural Plant Hormone | 300 ppm |
| PH | 9.0-11.0 |
| Solubility In Water | 100% |
| Appearance | Powder/Flake |
- Form
- Flake
- Declared
- Nutrient profile: Natural growth hormones and trace minerals, plus N, P, K and Mg
- Applied by
- Foliar spray · root irrigation · direct soil application
Seaweed Extract Flakes — specification
| Parameter | Declared value |
|---|---|
| Appearance | Powder/flake, 100% water-soluble |
| Alginic acid | ≥ 18% |
| Organic matter | ≥ 40.0% |
| Total nitrogen (N) | 0–1% |
| Phosphorus (P₂O₅) | 0–1% |
| Potassium (K₂O) | ≥ 16% |
| Microelements (Fe/Zn/B/Mo) | ≥ 0.5% |
| Natural plant hormones | 300 ppm |
| pH | 9.0–11.0 |
| Solubility in water | 100% |
| Mannitol | Not declared for this grade — ask for the batch COA |
One declared grade. Figures are the declared values carried on this page, not a guaranteed result in every field. Moisture is not declared on this grade — ask our export team for the batch certificate of analysis.
How it is applied
- Foliar spray — dissolve in water and spray onto leaves
- Root irrigation — add to irrigation water for root-zone feeding
- Direct soil application — mix into soil at planting or top-dress
Rate guidance: the rate depends on crop, growth stage and whether you spray, drench or apply to soil. Tell us the crop and the application method you use and we will send the rate for this grade.
Choosing between our seaweed extract grades
Our seaweed extract is supplied in four physical forms and three fortified variants. The right grade depends on how you apply it and what you are correcting.
| Grade | Form | What distinguishes it | Usual application |
|---|---|---|---|
| Seaweed Extract Flakes (this grade) | Flake | Concentrated solid; dissolves for spray or irrigation | Foliar, root irrigation, soil |
| Seaweed Extract Powder | Ultra-fine powder | Dissolves completely; also used in cosmetic formulations | Foliar, drip, hydroponics, seed treatment |
| Seaweed Extract Granules | Granule | Slowest to dissolve of the solids; strongest soil-conditioning effect | Foliar, soil treatment, hydroponics |
| Seaweed Extract Liquid | Liquid | Ready-to-dilute; alginic acid ≥ 8 g/L, K₂O ≥ 30 g/L | Foliar, drench, irrigation |
| Green Seaweed Liquid | Liquid, two grades | Standard and high-grade variants with different NPK balance | Foliar, soil, irrigation |
| Seaweed Extract — Micronutrient Type | Powder | Fortified to ≥ 13% micronutrients for trace-element correction | Foliar, soil, hydroponics |
| Seaweed Extract — Protein Type | Powder | Fortified to ≥ 80% protein and ≥ 14% N | Foliar, drench, drip |
| Seaweed Extract — Green NPK Type | Powder | Balanced with K₂O ≥ 16% for pre-harvest quality work | Foliar, drench, fertigation |
Technical background
If you are comparing this grade with others, or you need to justify the application to an agronomist or a buyer, these two guides cover the underlying chemistry and the field evidence: Seaweed fertiliser active ingredients — full guide and Application efficacy — what the evidence shows.
Related grades:
Technical data sheet, batch COA and packing options for this grade are available on request through our export team.
Seaweed Extract Flakes — frequently asked questions
What are the declared specifications of Seaweed Extract Flakes?
Declared values on this page: alginic acid — ≥ 18%; organic matter — ≥ 40.0%; total nitrogen (N) — 0–1%; phosphorus (P2O5) — 0–1%; potassium (K2O) — ≥ 16%; mannitol — Not declared for this grade — ask for the batch COA; microelements (Fe/Zn/B/Mo) — ≥ 0.5%; pH — 9.0–11.0; water solubility — 100%. All figures are declared minimums or ranges, not guaranteed field results, and a batch-specific Certificate of Analysis accompanies every shipment.
How is Seaweed Extract Flakes applied?
Typical application routes: foliar spray — dissolve in water and spray onto leaves; root irrigation — add to irrigation water for root-zone feeding; direct soil application — mix into soil at planting or top-dress. The exact rate depends on the crop, the growth stage and the application method — send us your crop and method and we will return the recommended rate for this grade.
What should I know before ordering Seaweed Extract Flakes?
One declared grade. Figures are the declared values carried on this page, not a guaranteed result in every field. Moisture is not declared on this grade — ask our export team for the batch certificate of analysis.
