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, or 2 drops, during the first 15 days of a seedling, cutting, or repotting.

It can be used in organic farming, in soil, on coco fibre, and in hydroponics.

Ref. TA-PROROOTS-30·Biostimulant

Format : 30 ml

30 ml

60 ml

250 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 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. This root stimulator supports it during 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, 2 drops, added to your watering water or to the nutrient solution you are already preparing, meaning a small bottle treats large volumes.

🗓️ The first 15 days

You use it from the first roots through to the first true leaves, around a fortnight, in soil, on coco fibre, or in hydroponics. It is added to the fertiliser without altering the dose, as it contributes almost no nutrients. Liquid fulvic acid can be used alongside it from the first roots, then it continues on its own at 2 ml per litre through to pre-flowering, to support root development during the growing 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 propagator, this concentrate is added to the reservoir at 0.2 ml per litre for the 15-day rooting period. The 5 cm neoprene discs hold each cutting above the solution and can be reused from one batch to the next. A second set lets you fill 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 governing the authorisation of natural substances for biostimulant use. It contributes almost no nutrients, so you can continue using your usual fertiliser throughout the treatment period. The ready-to-dose version, the organic root stimulator, is dosed at 5 ml per litre at first root appearance and is better suited to a small number of seedlings, where 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 using a graduated syringe or pipette, or count the drops. Shake the bottle before each use, close it immediately afterwards, and store it between 5 and 30 °C, out of reach of children and pets.

Take a cutting tank with a reservoir holding 15 litres. Add 3 ml of concentrate, one 3 ml syringe, at the same time as the starter fertiliser, and renew the solution each week throughout the 2-week rooting period. The treatment therefore uses 6 ml in total, and a 30 ml bottle covers 5 batches of cuttings. For a 2-litre watering can, 4 drops are sufficient.

🔬 An alkaline concentrate

The concentrate is a dark brown liquid with a citrus 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 drop-based pH test. The product is approved for use in organic farming under regulations (EU) 2018/848 and 2021/1165, and can be used in an organically managed kitchen garden.

📦 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, the 1 L bottle 5,000, and the 5 L bottle 25,000. As the treatment lasts only 15 days per crop, even the small bottle covers several seasons of seedlings for a family garden. The 250 ml is suited to repeated cuttings and high-capacity systems, the 500 ml to 5 L formats to nurseries and commercial growers, and it should be stored sealed, away from frost.

Technical specifications

The composition

Base: Vitamins, enzymes, organic acids and humic acidsWith amino acids and plant extracts, including cold-pressed Ascophyllum nodosum seaweed. Organic matter: 71%.
pH of concentrate: 9 to 9.5
Density: 1.12
Appearance: Dark brown liquid, lemon scent

Use

As a drench: 0,2 ml/LThat is 2 drops per litre, or 2 to 3 ml per 10 litres.
As a foliar spray: 0,1 ml/L
Duration: 15 days
Crops: Soil, coco fibre, hydroponics

The bottle

Storage: Between 5 and 30 °CBottle closed, shaken before each use.
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, drops per litre and storage temperature: bottle label; vitamins, enzymes and humic acids: manufacturer's data sheet recorded on 07/10/2026; dosages and pH: 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

Both cover the same first 15 days. At the working dilution, the 30 ml bottle of this concentrate prepares 150 litres of solution, whereas the 500 ml bottle of the ready-to-dose version prepares 100 litres. The concentrate must be measured with a syringe or counted by the drop, while the other is measured with a graduated cup.

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