1 L bottle of root biostimulant, green Biostimulant Racinaire label

500 ml bottle of organic root stimulator, 0.5 L per 100 L of solution

5 L container of plant-based root biostimulant

The three sizes of root stimulator, 500 ml, 1 L, and 5 L, lined up together

Back label of the root biostimulant: properties, schedule and dosage of 10 ml per 2 L

Root stimulator poured into a measuring cup, in a greenhouse, in front of young seedlings

Liquid organic root stimulator for seedlings and cuttings

14,90 €

Packaging	Price	Price per L	vs 500 mL
500 mL	14,90 €	29,80 €	—
1 L	22,50 €	22,50 €	−24 %
5 L	89,90 €	17,98 €	−40 %
10 L	159,90 €	15,99 €	−46 %

4,96 € × 3 with no fees Klarna.

This liquid biostimulant, composed of vitamins, enzymes, and humic acids, helps your seedlings, cuttings, and freshly repotted plants to establish their roots. It is dosed at 5 ml per litre at first root formation, then at 3 ml per litre, during the 2 weeks following transplanting.

Approved for use in organic farming, it is sold under the label "Biostimulant racinaire".

Ref. TA-ROOT-500·Biostimulant

Packaging : 500 ml

500 mL

Customer support 7 days a week by email

Delivery within 2 to 15 business days

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The summary

What you receive: a bottle of liquid root biostimulant, in your chosen size, labelled "Biostimulant racinaire".
When to use it: during the 14 days following a seedling, a cutting, or a repotting.
The dose: 5 ml per litre at first root emergence, then 3 ml per litre at the first true leaves.
For organic growing: approved for use in organic farming and not classified as hazardous.

Natural biostimulant for rooting seedlings, cuttings, and repotted plants

A cutting has no roots, a seedling has only a few millimetres of them, and a repotted plant must colonise a fresh grow medium. During these first few days, while the root system is still limited, the plant absorbs little water and few nutrients, regardless of how good your solution is. This liquid root stimulant is designed precisely for this rooting phase. Add it to your irrigation water or nutrient solution for 2 weeks, then return to your usual programme.

🌿 A rooting biostimulant

This product does not feed the plant in the strict sense: it does not supply any meaningful quantity of nitrogen, phosphorus, or potassium, and therefore does not replace your fertiliser. It is a biostimulant, compliant with Decree No. 2016-532 governing natural substances used as biostimulants, composed of vitamins, enzymes, and humic acids, together with natural amino acids and plant extracts. Its role is to encourage faster and denser root development. It should therefore be used in addition to a complete nutritional programme, not instead of one.

On seedlings

As soon as the first roots appear, water your pots or seedling cubes with water dosed at 5 ml per litre.

On cuttings

The product is poured into the propagator's reservoir, where the misted solution keeps the base of the cuttings moist throughout root formation.

When repotting

A repotted plant recovers more quickly when watered with the solution during the 2 weeks that follow.

💧 Dosage by growth stage

At the first roots, the dose is 5 ml per litre, whether in hydroponics, coco fibre, or soil. Once the first true leaves appear, reduce this to 3 ml per litre, then stop applications after approximately 14 days, once the plant is well established. For a 20-litre propagator, that means 100 ml at the start. The product can also be applied as a foliar spray at 3 ml per litre. At this rate, a 500 ml bottle prepares 100 litres of solution, the 5-litre container prepares 1,000 litres, and the 10-litre container prepares 2,000 litres.

Starting cuttings in a hydroponic propagator

Cuttings root more consistently when their base receives a continuous supply of oxygenated solution. The HydroCloner propagator holds 27 or 72 stems in neoprene discs above a constantly misted solution. Add the root stimulator to the reservoir as soon as the cuttings are in place, at 5 ml per litre, then reduce to 3 ml per litre once the first true leaves appear.

Measure conductivity after pH

Add the stimulator to the solution, adjust the pH to between 5.5 and 6.5, then measure the conductivity last, as this final value is what matters for your young roots. When spraying, keep the solution highly diluted and avoid treating during flowering. Always shake the bottle before use, as part of the product may settle at the bottom.

🧪 Which products to combine it with

The stimulant works with all types of fertiliser and on all grow media. For an organically managed crop, it complements soil micro-organisms well: Trichoderma TrikoLogic colonises the root zone that the biostimulant helps to develop. In hydroponics, check your solution with the drop pH test after each addition, as the concentrate is acidic, at pH 4. Once the rooting phase is complete, simply switch to your growth fertiliser.

📦 Formats, shelf life and storage

The product is available in 500 ml and 1-litre bottles, and in 5- and 10-litre containers for larger growing operations. It comes as a dark brown liquid with a slightly sulphurous odour, fully soluble in water. It has a shelf life of 2 years from the date of manufacture when stored cool, dry, and in its sealed original packaging, away from heat and temperatures below 5 °C. Its safety data sheet does not classify it as hazardous.

Technical specifications

The formula

Nature: Liquid biostimulantCompliant with decree no. 2016-532
Composition: Vitamins, enzymes, humic acidsWith amino acids and plant extracts
Action type: Fast and long-lastingEffective from the first waterings, sustained throughout the 14 days of use.
Organic farming: Suitable for useRegulations (EU) 2018/848 and 2021/1165

Use

First roots: 5 ml per litre
First true leaves: 3 ml per litre
Foliar spray: 3 ml per litreOutside flowering
Duration of use: Approximately 14 daysAfter seedling, cutting or repotting
Crops: Hydroponics, coco fibre, soil
Yield: 1 L per 200 L of solution

The bottle

Appearance: Dark brown liquidpH of the concentrate: 4
Ranking: Not classified as hazardous
Storage: 2 years after manufactureKeep cool, above 5 °C
Manufacturing: France

To budget for separately

pH measurement: A pH test kit in drops
Cuttings: A HydroCloner propagator

8 further specifications are available in the detailed view.

In the box

1 bottle of liquid root stimulator, in your chosen size: 500 ml, 1 L, 5 L or 10 L

Composition, status, rates, yield, storage, and classification sourced on 01/10/2026 from the product datasheet, the 2025 application table, and the manufacturer's safety data sheet.

Ready to use or concentrated?

Both are used during the first 15 days of a seedling, cutting or repotting. The first is dosed by the glass, the second by the drop.

Can't decide between the two versions? One is measured with a jug, the other with a syringe. 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 Liquid organic root stimulator for seedlings and cuttingsYour choice	5 ml/L	3 ml/L	100 L	Graduated glass	4	A few plants, straightforward dosing	First roots and first leaves	Suitable for use
Concentrated organic root stimulator, 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, repeated cuttings	First roots and first leaves	Suitable for use

Liquid organic root stimulator for seedlings and cuttingsRecommended

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

Recommended useA few plants, straightforward dosing

PeriodFirst roots and first leaves

Organic farmingSuitable for use

Concentrated organic root stimulator, 0.2 ml/L

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, repeated cuttings

PeriodFirst roots and first leaves

Organic farmingSuitable for use

Doses and periods: 2025 application table; pH: manufacturer's safety data sheets; recorded on 07/10/2026.

Documents & manuals

Safety data sheet, in French

The data sheet details the composition, non-hazardous classification and storage conditions of the stimulator.

PDF · 0,2 Mo

Download

Estimate your
delivery time

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

Are the Root Booster and the Biostimulant racinaire the same product?

How long should you use it for?

What dose for a 20-litre propagator?

Is it a cuttings hormone?

How do you use it on cuttings?

Can it be mixed with a fertiliser?

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Liquid organic root stimulator for seedlings and cuttings

The summary