Terra Aquatica Seaweed Ascophyllum Biostimulant
Terra Aquatica Seaweed Ascophyllum Biostimulant
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Order by 3pm Mon–Fri — we aim to post same day · FREE Express Delivery over £60 · 1–2 working days · Free Wembley pickup
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A cold-pressed kelp extract for plants under pressure
Terra Aquatica Seaweed is an extract of Ascophyllum nodosum, the North Atlantic kelp used across commercial horticulture as a biostimulant. It is not a feed. It supplies natural cytokinins, betaines, alginates and micronutrients that help a plant hold its composure through transplanting, heat and root work.
Key Benefits
- Reduces transplant shock - the standard use - a kelp drench at potting on gets roots moving days sooner
- Helps through heat stress - betaines support cell water balance when the tent runs hot
- Encourages lateral roots - natural hormones push branching rather than a single tap root
- Safe at every stage - from cuttings through to late flower, and as a foliar spray
- Organic input - suits an organic or a mineral programme equally
Transplant shock and a week of standing still
A plant that sulks after potting on has stopped root growth just when it should be accelerating, and that week never comes back. Heat does the same thing mid-cycle. Kelp extract shortens the recovery, which is why it belongs in the watering can on transplant day rather than in the cupboard.
How to Use
- Transplanting: 5 ml per litre as a drench on the day, and again a week later
- Propagation: Terra Aquatica do not list Seaweed at the first-roots stage - start it once the first true leaves are open
- Routine use: 5 ml per litre from the first true leaves right through to flowering
- Heat stress: 3 ml per litre as a foliar spray, lights off
- Note: biostimulant, not a feed - it does not replace any part of the base programme
Technical Specifications
- Source: Ascophyllum nodosum, cold processed
- Role: Biostimulant and stress recovery
- Actives: Natural cytokinins, betaines, alginates, trace elements
- Typical dose: 5 ml per litre
- Foliar: 3 ml per litre, lights off
- Media: Soil, coco, hydroponics
| Stage | Per 1 L | Per 10 L |
|---|---|---|
| 1st true leaves through to flowering | 5 ml | 50 ml |
| Foliar spray | 3 ml | 30 ml |

FREE Express Delivery on orders over £60. We aim to post same day for next-working-day arrival — order by 3pm Mon–Fri. Delivery is 1–2 working days. A few harder-to-stock or large, bulky items can take a little longer — we'll tell you if that applies to your order. Heavy-item surcharges are always shown at checkout before you pay — we only ever charge what delivery costs us. Prefer to collect? Free pickup at our Wembley store.