• Wollastonite natural calcium silicate 1 lb.
  • Description

VanSil Wollastonite — Natural Calcium Silicate Fertilizer

This 1 lb sample bag of VanSil wollastonite is the perfect way to trial the only OMRI-certified wollastonite mined and milled entirely in the USA. Sourced from Vanderbilt Minerals in Lewis County, New York — not a slag byproduct.

Use as a gentle lime alternative to raise media pH while delivering plant-available silicon (Si) and carbon-neutral calcium (Ca) to your root zone.

Key Benefits

  • Bioavailable silicon strengthens cell walls and improves stress and pest tolerance
  • Gentle pH correction without the spike risk of hydrated lime
  • Carbon-neutral calcium — no heavy metals, no slag
  • OMRI Listed for certified organic production
  • Great trial size for soilless mixes, coco coir, and container gardens

Guaranteed Analysis

  • CaO: 45% | Ca: 34%
  • SiO2: 50% | Total Si: 24% | Soluble Si: 3.6%

Wollastonite Calcium Silicate Fertilizer 1 lb

Wollastonite Calcium Silicate Fertilizer 1 lb

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$5.20 lb
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solutions tailored for the unique needs of hydroponic and organic farming practices.

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