Concentrated organic flowering stimulator with seaweed, 0.2 ml/L
Regular price
$15.90
Regular price
Sale price
$15.90
Unit price
/
per
| Format | Price | Price per L | vs 30 ml |
|---|---|---|---|
| 30 ml | $15.90 | $530.00 | — |
| 60 ml | $23.91 | $398.50 | −25 % |
| 250 ml | $87.98 | $351.92 | −34 % |
| 500 ml | $148.61 | $297.22 | −44 % |
| 1 L | $275.60 | $275.60 | −48 % |
| 5 L | $1,315.55 | $263.11 | −50 % |
$5.30 × 3 with no fees
Klarna.
This concentrated flowering activator is a cold-pressed extract of Ascophyllum nodosum seaweed. It is dosed at 0.2 ml per litre, approximately 4 drops, from pre-flowering through to harvest, added to the irrigation water or nutrient solution.
It is suitable for organic growing, in soil, on coco fibre, and in hydroponics.
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The summary
- What you receive: a 30, 60, 250, or 500 ml bottle, or a 1 L or 5 L container of liquid concentrate.
- The period: from pre-flowering through to harvest, including the ripening stage.
- The dose: 0.2 ml per litre when watering, approximately 4 drops.
- The yield: the 60 ml bottle prepares 300 litres of solution.
Algae-based biostimulant, ultra-concentrated, for flowering and fruiting
During flowering, the fertiliser supplies the nutrients, but the plant must also absorb them and transport them to the flowers and developing fruit. This seaweed biostimulant supports this phase without changing anything in your fertiliser programme: it is added at 0.2 ml per litre in the watering can or reservoir, from pre-flowering through to harvest. Its extract of the brown alga Ascophyllum nodosum is obtained by cold pressing and is suitable for use in organic growing.
Incorporate seaweed from the growth stage onwards
Cold-pressed seaweed is used at 5 ml per litre from the first true leaves through to the end of flowering. This concentrate joins it during pre-flowering at 0.2 ml per litre, and both are added to the same water at their respective doses. During fruit ripening, it continues on its own, so your plants receive a growth biostimulant right through to harvest.
🌺 From pre-flowering to harvest
You begin at the appearance of the first buds, at 0.2 ml per litre, at the same time as you transition to the flowering fertiliser. The dose remains the same throughout flowering, then during fruit ripening, including when the late-flowering fertiliser replaces the usual one. In soil, coco fibre, and hydroponics, the dose is identical, which simplifies preparation if you are running several crops at once.
As a foliar spray, the dose drops to 0.1 ml per litre, or 2 drops, in water whose conductivity remains below 0.6 mS, and it is applied only during pre-flowering. Once the flowers have opened, spraying stops, as the liquid must not be applied directly onto the blooms. You then continue feeding by watering alone, which is sufficient to cover the rest of the cycle.
Never spray on open flowers
Spraying is limited to the pre-flowering stage, applied to the foliage in the morning or evening. The label advises against spraying the liquid directly onto flowers, and thereafter nutrients should be applied by watering only. Shake the bottle before use, measure doses with a graduated syringe, and store it sealed between 5 and 35 °C, out of reach of children.
30 ml bottle
150 litres of solution at 0.2 ml per litre.
60 ml bottle
300 litres, for a season of fruiting vegetables.
250 ml bottle
1,250 litres, for a greenhouse or multiple systems.
500 ml bottle
2,500 litres, for multiple greenhouses or a nursery.
1 L bottle
5,000 litres, for a market garden operation.
5 L container
25,000 litres, for professional production.
This product is a biostimulant, compliant with decree no. 2016-532 on natural substances for biostimulant use. Its levels of nitrogen at 0.3%, sulphur at 0.5%, magnesium at 0.1%, and calcium at 0.16% are too low to feed the plant on their own, with 7% organic carbon. You should therefore keep your flowering fertiliser at its usual dose, such as the NPK 4-8-7 flowering fertiliser.
🍅 A tomato greenhouse
Take twelve tomato plants on a drip system fed from a 100-litre reservoir renewed each week. You add 20 ml of concentrate at each preparation, alongside the fertiliser, then adjust the pH. Over 8 weeks of flowering and ripening, the treatment uses 160 ml, that is one 250 ml bottle for the season, or three 60 ml bottles. At 1,000 litres per week, a commercial grower would use 1.6 L over the same period.
🌊 A seaweed extract with no heat treatment
Ascophyllum nodosum is a brown seaweed from the North Atlantic coast, rich in polysaccharides and mannitol. It is extracted by cold pressing, without heating the seaweed. The product is approved for use in organic farming under regulations (EU) 2018/848 and 2021/1165, manufactured in France, and can be used in an organic kitchen garden as well as in a hydroponic system, where it is measured with a pH test once the solution is complete.
Technical specifications
The composition
- Base
- Extract of Ascophyllum nodosumCold-pressed
- Organic carbon
- 7 %
- Sulphur and magnesium
- 0.5% S, 0.1% Mg
- Nitrogen and calcium
- 0.3% N, 0.16% Ca
Use
- As a drench
- 0,2 ml/LFrom pre-flowering through to harvest
- As a foliar spray
- 0,1 ml/LDuring pre-flowering only
- Crops
- Soil, coco fibre, hydroponics
- Storage
- Between 5 and 35 °C
The bottle
- Formats
- 30 ml to 5 L
- Status
- BiostimulantDécret n° 2016-532
- Organic farming
- Suitable for useRegulations (EU) 2018/848 and 2021/1165
- Hazard classification
- Uncategorised
To budget for separately
- Flowering fertiliser
- A complete bloom fertiliser
- pH measurement
- A pH test kit in drops
6 further specifications are available in the detailed view.
In the box
- 1 bottle of 30, 60, 250, or 500 ml, 1 L, or 5 L, depending on the chosen size
Composition, doses and storage information sourced on 02/10/2026 from the product label, the 2025 application chart and the safety data sheet dated 11/12/2023, cross-checked with three retailers.
Concentrate or ready to dose?
Both support flowering and fruiting with a seaweed extract, from pre-flowering through to ripening. The first is dosed by the drop, the second by the glassful.
Concentrate or diluted version?
The concentrate prepares large volumes; the ready-to-use version is measured by the glass. Three questions are enough to decide.
| Dose when watering (ml/L) | Spray dose (ml/L) | Solution prepared using the smallest bottle (L) | Measuring the dose | pH of concentrate | Recommended use | Period | Organic farming | |
|---|---|---|---|---|---|---|---|---|
| Recommended Concentrated organic flowering stimulator with seaweed, 0.2 ml/LYour choice | 0,2 ml/L | 0,1 ml/L | 150 L | Graduated syringe or drops | 9 to 9.5 | Large volumes, well-equipped grower | Pre-flowering to ripening | Suitable for use |
| Liquid organic bloom booster for flowers and fruitYour choice | 5 ml/L | 3 ml/L | 100 L | Graduated glass | 4,9 | A few plants, beginner grower | Pre-flowering to ripening | Suitable for use |
Concentrated organic flowering stimulator with seaweed, 0.2 ml/LRecommended
Dose when watering (ml/L)0,2 ml/L
Spray dose (ml/L)0,1 ml/L
Solution prepared using the smallest bottle (L)150 L
Measuring the doseGraduated syringe or drops
pH of concentrate9 to 9.5
Recommended useLarge volumes, well-equipped grower
PeriodPre-flowering to ripening
Organic farmingSuitable for use
Liquid organic bloom booster for flowers and fruit
Dose when watering (ml/L)5 ml/L
Spray dose (ml/L)3 ml/L
Solution prepared using the smallest bottle (L)100 L
Measuring the doseGraduated glass
pH of concentrate4,9
Recommended useA few plants, beginner grower
PeriodPre-flowering to ripening
Organic farmingSuitable for use
Doses and periods: 2025 application chart and manufacturer's data sheets; pH: safety data sheets; recorded on 07/10/2026.
Help choosing
Which version for your flowering stage?
Documents & manuals
Safety data sheet for the flowering stimulator
The data sheet details the composition, storage and first aid information for the concentrate.
Document not showing? Some publishers block display inside a frame, so open it in a tab.
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Bottle dispatched by tracked parcel from France. Exact shipping costs and final delivery times are displayed at checkout once your address has been entered. Outside the European Union, import duties and taxes are the responsibility of the recipient.
Frequently asked questions
6 questions
6 key questions
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