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Silic Rock by Plagron stimulates the development of your plants to their full genetic potential, so you can maximize flower yield.

Silicon, an element present in the Earth's crust, is often missing or not found in the required amounts in substrates.

Silic Rock remedies silicon deficiencies to ensure your plants enjoy a vigorous development and lush flowering.


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Use Silic Rock from Plagron to boost the natural resistance of the plant against stress.

Type and Use

Plagron's Silic Rock is a silicon additive for growing cannabis indoors, in greenhouses, and outdoors. Suitable for use with all types of substrate soil, coco and hydroponic.

Plant Benefits

Silicon is a beneficial element for cultivation:

  • Improves the absorption of phosphorus, calcium, and micronutrients.
  • Strengthens the cell walls and increases the vigor of the stem.
  • Increases resistance against water stress and salts.
  • Healthy and stress-free development produced by Silic Rock increases the harvest and final quality of the flowers.

Method of Use and Dosage

Mix a maximum of 1 ml of Silic Rock per liter of water.

Use at every watering.


N-P-K: 1.5-0-1.7.

SiO2 silicon oxide 1.0%.

Opinion of La Huerta

Plagron's Silic Rock is a silicon additive that you should use alongside growth and flowering fertilizers like those found in Plagron Organic Pack BasicPro and Super Pro or in coco fiber substrates together with Cocos A and B and rooting and flowering stimulants like Power Roots and PK 13-14.

Data sheet

Type of composition
Mineral or chemical
Growth stage
Type of stimulant or additive
Nutrtional complement
Type of grow
Aeroponic grow
Coco grow
Hydroponic grow
Soil grow

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