Description

Plagron Hydro Roots 100 ml – mineral root stimulator for hydroponic systems

Hydro Roots by Plagron is a liquid, fully mineral additive that strengthens the root system, developed for hydroponic cultivation and irrigation systems. It contains phosphorus and boron – two ingredients with different functions that together improve the plant's ability to absorb nutrients.

Phosphorus stimulates root growth: it increases root length and supports cell division and enlargement. Boron enhances the activity of enzymatic systems, resulting in more efficient nutrient uptake. As a result, the product supports root initiation and growth, increases the number of lateral roots and densifies root hairs, thereby improving the architecture of the entire root system. Well-developed roots supply the plant with water and nutrients more effectively.

The product contains no organic ingredients, so it does not clog drippers or pumps, and the nutrient solution remains stable for longer. The 100 ml bottle is enough to prepare up to 100 litres of nutrient solution – a practical size for a small hydroponic system or for trial use.

Key features

  • supports root initiation and growth, as well as root branching
  • densifies root hairs and improves root system architecture
  • fully mineral composition – no risk of clogging drippers or pumps
  • quickly absorbed and efficient: 1 ml per 1 litre of water
  • particularly useful for young plants before and after transplanting
  • can be combined with other additives from the Plagron UNIVERSAL range

Composition and NPK analysis

Simple liquid mineral phosphorus fertilizer (NPK 0-20-0) with a micronutrient. Declared nutrient content (% w/w):

  • total and water-soluble phosphorus pentoxide (P2O5) – 20.5%
  • water-soluble boron (B), in the form of sodium salt – 0.02%

Raw material according to the label: monosodium phosphate. The concentrate is a clear, colourless and odourless liquid with a pH of 4.9 and a density of 1.34 g/ml.

Application

Hydro Roots is intended exclusively for hydroponic cultivation and application through an irrigation system, including recirculating systems. It supports root development in young plants before and after transplanting, and then throughout the growth phase and the first weeks of flowering – in home and greenhouse systems growing leafy plants and herbs as well as fruiting vegetables. It is recommended to combine it with Hydro A+B fertilizer and Green Sensation and Power Buds additives. Power Roots is more suitable for hand watering; it contains organic ingredients and therefore performs less well in irrigation systems.

Directions for use

  1. Shake well before use.
  2. Add 1 ml of Hydro Roots per 1 litre of water (1:1000).
  3. Use with every watering.
  4. Use until the fourth week of the flowering phase, then stop so that the plant can devote its energy to flowers and fruit.

Use fertilizer only when justified by need and do not exceed the recommended dose.

Safety and storage

Contains CMIT-MIT reaction mass (3:1) at a concentration below 0.01% – may cause an allergic reaction. Keep out of reach of children. Dispose of contents and container in accordance with national regulations. Store and transport upright, in the tightly closed original packaging, in a dark place, at a temperature of 0–35 °C. Protect from frost and direct sunlight. The shelf life of the unopened product is 4 years from the production date.

Product information

  • Volume: 100 ml
  • Form: liquid mineral concentrate
  • Type: phosphorus fertilizer with boron, root stimulator
  • Cultivation system: hydroponics and irrigation systems
  • Range: Plagron UNIVERSAL
  • Manufacturer: Bertels B.V. (Plagron), Ospel, the Netherlands

Plagron Hydro Roots 100 ml helps build a dense, efficient root system without burdening the irrigation system.

Product form

Plagron Hydro Roots 100 ml – mineral root stimulator for hydroponics

100 ml 36,90 zł 1 L 142,50 zł

36,90 zł

    • Fast shipping within 24 hours
    • Premium quality

    Description

    Plagron Hydro Roots 100 ml – mineral root stimulator for hydroponic systems

    Hydro Roots by Plagron is a liquid, fully mineral additive that strengthens the root system, developed for hydroponic cultivation and irrigation systems. It contains phosphorus and boron – two ingredients with different functions that together improve the plant's ability to absorb nutrients.

    Phosphorus stimulates root growth: it increases root length and supports cell division and enlargement. Boron enhances the activity of enzymatic systems, resulting in more efficient nutrient uptake. As a result, the product supports root initiation and growth, increases the number of lateral roots and densifies root hairs, thereby improving the architecture of the entire root system. Well-developed roots supply the plant with water and nutrients more effectively.

    The product contains no organic ingredients, so it does not clog drippers or pumps, and the nutrient solution remains stable for longer. The 100 ml bottle is enough to prepare up to 100 litres of nutrient solution – a practical size for a small hydroponic system or for trial use.

    Key features

    • supports root initiation and growth, as well as root branching
    • densifies root hairs and improves root system architecture
    • fully mineral composition – no risk of clogging drippers or pumps
    • quickly absorbed and efficient: 1 ml per 1 litre of water
    • particularly useful for young plants before and after transplanting
    • can be combined with other additives from the Plagron UNIVERSAL range

    Composition and NPK analysis

    Simple liquid mineral phosphorus fertilizer (NPK 0-20-0) with a micronutrient. Declared nutrient content (% w/w):

    • total and water-soluble phosphorus pentoxide (P2O5) – 20.5%
    • water-soluble boron (B), in the form of sodium salt – 0.02%

    Raw material according to the label: monosodium phosphate. The concentrate is a clear, colourless and odourless liquid with a pH of 4.9 and a density of 1.34 g/ml.

    Application

    Hydro Roots is intended exclusively for hydroponic cultivation and application through an irrigation system, including recirculating systems. It supports root development in young plants before and after transplanting, and then throughout the growth phase and the first weeks of flowering – in home and greenhouse systems growing leafy plants and herbs as well as fruiting vegetables. It is recommended to combine it with Hydro A+B fertilizer and Green Sensation and Power Buds additives. Power Roots is more suitable for hand watering; it contains organic ingredients and therefore performs less well in irrigation systems.

    Directions for use

    1. Shake well before use.
    2. Add 1 ml of Hydro Roots per 1 litre of water (1:1000).
    3. Use with every watering.
    4. Use until the fourth week of the flowering phase, then stop so that the plant can devote its energy to flowers and fruit.

    Use fertilizer only when justified by need and do not exceed the recommended dose.

    Safety and storage

    Contains CMIT-MIT reaction mass (3:1) at a concentration below 0.01% – may cause an allergic reaction. Keep out of reach of children. Dispose of contents and container in accordance with national regulations. Store and transport upright, in the tightly closed original packaging, in a dark place, at a temperature of 0–35 °C. Protect from frost and direct sunlight. The shelf life of the unopened product is 4 years from the production date.

    Product information

    • Volume: 100 ml
    • Form: liquid mineral concentrate
    • Type: phosphorus fertilizer with boron, root stimulator
    • Cultivation system: hydroponics and irrigation systems
    • Range: Plagron UNIVERSAL
    • Manufacturer: Bertels B.V. (Plagron), Ospel, the Netherlands

    Plagron Hydro Roots 100 ml helps build a dense, efficient root system without burdening the irrigation system.

    Frequently Asked Questions - FAQ

    Do you ship orders to the entire European Union?

    Yes, we ship to all countries in the European Union. The cost and delivery time depend on the destination country, the chosen shipping method, and current logistical conditions.

    Can I pay cash on delivery (COD)?

    Cash on delivery is available in selected European Union countries. Available payment methods are always displayed during the checkout process, depending on the delivery country.

    Where can I find sowing and cultivation instructions?

    Instructions and guides on sowing and plant care can be found in the product descriptions and on our blog, where we regularly publish educational materials. Additionally, we include a printed instruction manual with every order.

    Are the seeds sold legal and safe?

    Yes, all products offered by Mr.seed are legal and marketed in accordance with applicable regulations and the guidelines of phytosanitary institutions.

    Where do the seeds come from?

    Our seeds come from trusted producers and direct sources around the world. We collaborate with plantations, botanical gardens, and experienced seed collectors.

    How quickly are orders shipped?

    We ship most orders on the same or next business day. During busy periods, such as peak season or holidays, processing time may extend up to 72 hours.

    Where can I find answers to more questions?

    You can find an extensive database of answers on the full FAQ page, where we cover in detail topics such as orders, shipping, payments, cultivation, and products.

    👉 [Go to the full FAQ]

    Footer image

    © 2026 mr.seed, Shopify Technology

    • PL (PLN zł) PL (PLN zł)
    • English flag English flag
    • American Express
    • Apple Pay
    • Bancontact
    • BLIK
    • Google Pay
    • Klarna
    • Maestro
    • Mastercard
    • MB WAY
    • MobilePay
    • PayPal
    • Union Pay
    • Visa