AgSil 16H Bio-nutrient potassium silicate

AgSil® 16H is a soluble form of potassium silicate providing the plant a 100% available source of silicon and potassium that are essential for optimum plant growth and health. AgSil 16H hydrous potassium silicate powder is our flagship product at We have stocked it since we started the website back in 2010. AgSil 16H is the most concentrated plant available silicon fertilizer on the market.

Certis USA is now distributing the entire AgSil Bio-nutrient line nation wide, which includes AgSil 21 and AgSil 25 liquid potassium silicate concentrates. AgSil 25 is also labeled as Sil-Matrix and sold as an NOP compliant and OMRI listed bio-pesticide.

AgSil products are your bionutrient sources for silicon and potassium.

Crops treated with AgSil products:

  • Are more resistant to mineral stress
  • Experience less climate stress
  • Have improved strength
  • Show increased growth and yield has the following products available:

  • AgSil® 16H

AgSil 16H potassium silicate
Buy AgSil 16h NOW!
  • AgSil® 25/Sil-Matrix

    Sil-Matrix aqueous potassium silicate
    Buy Sil-Matrix NOW!

AgSil helps plants to resist toxicity from phosphorous, manganese, aluminum and iron and increases tolerance to salt. AgSil also aids in resistance to drought by reducing water loss, and in some cases it may increase growth and yield.

Application of AgSil® improves leaf erectness, reduces susceptibility to lodging in grasses and improves photosynthesis efficiency. For turf, this can result in faster, healthier greens and athletic fields. Row crops, vine crops, ornamentals and hydroponically grown plants can all benefit from potassium silicate supplementation.