250 ml bottle of Pro Roots, concentrated algae-based root stimulator, green label

30 ml bottle of concentrated root stimulator with its sleeve.

60 ml bottle of concentrated root stimulator with its sleeve.

Concentrated root stimulator in 30 ml, 60 ml and 250 ml

Root stimulator label: dosage table, 0.2 ml per litre, composition

500 ml bottle of concentrated root stimulator, orange label

Concentrated organic root stimulator, 0.2 ml/L

$18.00

Format	Price	Price per L	vs 30 ml
30 ml	$18.00	$600.00	—
60 ml	$26.00	$433.33	−28 %
250 ml	$88.00	$352.00	−41 %
500 ml	$161.00	$322.00	−46 %
1 L	$298.00	$298.00	−50 %
5 L	$1,430.00	$286.00	−52 %

$6.00 × 3 with no fees Klarna.

This concentrated root stimulator contains vitamins, enzymes, and organic and humic acids. It is dosed at 0.2 ml per litre, approximately 4 drops, during the first 15 days after sowing a seedling, taking a cutting, or repotting.

It is suitable for organic growing, in soil, on coco fibre, and in hydroponics.

Ref. TA-PROROOTS-30·Biostimulant

Format : 30 ml

30 ml

60 ml

250 ml

500 ml

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Delivery within 2 to 15 business days

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The summary

What you receive: a 30, 60, 250 or 500 ml bottle, a 1 L or 5 L bottle of concentrated liquid.
The dose: 0.2 ml per litre when watering, 0.1 ml per litre when spraying foliage.
The period: the first 15 days, from the first roots to the first true leaves.
The yield: the 30 ml bottle makes up 150 litres of solution.

Ultra-concentrated rooting activator, for seedlings, cuttings and repotting

A seedling, a cutting or a freshly repotted plant must first establish its roots before it can absorb water and nutrients effectively. This root stimulator supports it through this phase with a concentrated blend of vitamins, enzymes and organic and humic acids. Highly concentrated, it is dosed at 0.2 ml per litre, roughly 4 drops, added to your watering water or to the nutrient solution you are already preparing, so a small bottle goes a very long way.

🗓️ The first 15 days

You use it from the first roots through to the first true leaves, a period of around fifteen days, whether in soil, coco fibre or hydroponics. It is added to the fertiliser without altering the dose, as it contributes almost no nutrients of its own. Liquid fulvic acid can be used alongside it from the first roots, then continues alone at 2 ml per litre through to pre-flowering, to support root hair development during the growth phase.

As a drench

0.2 ml per litre, i.e. 2 ml for a 10-litre watering can.

As a foliar spray

0.1 ml per litre on the foliage, at the same time.

Duration

15 days, after which the fulvic acid continues on its own.

Prepare a batch of cuttings in advance

In a cloner, this concentrate is added to the reservoir at 0.2 ml per litre throughout the 15-day rooting period. The 5 cm neoprene discs hold each stem above the solution and can be reused from one batch to the next. A second set lets you load the next batch while the first is still rooting, and the same bottle covers both.

This concentrate is a biostimulant, compliant with decree no. 2016-532, which lists natural substances approved for biostimulant use. It provides almost no nutritive elements, so your usual fertiliser should be maintained throughout the treatment period. Its ready-to-dose version, the organic root stimulator, is dosed at 5 ml per litre at first roots and is better suited to a few seedlings, when a few drops are difficult to measure accurately.

Measuring with a syringe rather than a cap

At 0.2 ml per litre, a capful poured by eye represents several times the correct dose. Measure the concentrate with a graduated syringe or a pipette, or count the drops. Shake the bottle before each use, reseal it immediately, and store it between 5 and 35 °C, out of reach of children and pets.

Take a cutting tray with a 15-litre reservoir. Add 3 ml of concentrate, one 3 ml syringe, at the same time as the starter fertiliser, and change the solution weekly for the 2-week rooting period. Each treatment uses 6 ml, so the 30 ml bottle covers 5 batches of cuttings. For a 2-litre watering can, 8 drops are sufficient.

🔬 An alkaline concentrate

The concentrate comes as a dark brown liquid with a lemon scent, at a pH of between 9 and 9.5, making it distinctly alkaline. At 0.2 ml per litre, its contribution to the solution is very small, but it adds to that of your other products. In hydroponics, add it to the solution before correcting the pH, which you then check with a pH drop test kit. The product is suitable for organic farming under regulations (EU) 2018/848 and 2021/1165, and can be used in a vegetable plot managed organically.

📦 Six sizes

At 0.2 ml per litre, the 30 ml bottle prepares 150 litres of solution, the 60 ml bottle 300 litres, and the 250 ml bottle 1,250 litres. The 500 ml bottle prepares 2,500 litres, the 1 L bottle 5,000 litres, and the 5 L bottle 25,000 litres. As the treatment lasts only 15 days per crop, the small bottle already covers several seasons of seedlings for a family garden. The 250 ml suits repeated cuttings and large-capacity systems, the 500 ml to 5 L sizes are aimed at nurseries and commercial growers, and the product should be stored sealed and protected from frost.

Technical specifications

The composition

Base: Vitamins, enzymes, organic acids and humic acidsConcentrated version of the organic root stimulator
pH of concentrate: 9 to 9.5
Density: 1.12
Appearance: Dark brown liquid, lemon scent

Use

As a drench: 0,2 ml/LAbout 4 drops per litre
As a foliar spray: 0,1 ml/L
Duration: 15 days
Crops: Soil, coco fibre, hydroponics

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

Switch after 15 days: A liquid fulvic acid
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 recorded on 07/10/2026 from the manufacturer's data sheet; doses, pH, appearance, and storage: 2025 application chart and safety data sheet dated 11/12/2023.

Concentrate or ready to dose?

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

Concentrate or diluted version? The concentrate treats large volumes; the diluted version is easier to measure. 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 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 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/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, repeated cuttings

PeriodFirst roots and first leaves

Organic farmingSuitable for use

Liquid organic root stimulator for seedlings and cuttings

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

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

Documents & manuals

Safety data sheet for the root stimulator

The data sheet details the composition, storage and first aid information for the concentrate.

PDF · 0,1 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

How many drops per litre?

What is the difference from the non-concentrated root stimulator?

Product	Dose	Suitable for
This concentrate	0,2 ml/L	Large volumes, cuttings, hydroponics
Diluted version	5 ml/L	A few seedlings, easier dosing

Should fertiliser be reduced during treatment?

What happens after 15 days?

How do you use it as a foliar spray?

Can it be used alongside a trichoderma?

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Concentrated organic root stimulator, 0.2 ml/L

The summary