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Part Number: VANSIL-4lb-bag
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Wollastonite 4 pound bag

Natural Calcium Silicate fertilizer 

Use as an alternative to lime and to provide Plant Available Silicon and Calcium in your soilless potting mixes.

For best results, apply wollastonite according to soil test results and agronomic recommendations. Application rates will vary according to plant requirements and soil conditions. Consider calcium and magnesium requirements in addition to silicon supplementation when using this product as part of a balanced fertility program

Horticultural Applications


Add 6 to 10 pounds of wollastonite per cubic yard of soilless mix (1/4 cup per gallon)

Home Gardens:

Add 1 cup of wollastonite per meter of row at seeding. Use 2 tsp. to 1/3 cup of wollastonite per plant at transplanting. Top-dress plants with 2 tsp. of wollastonite weekly or bi-weekly.

Market Gardens/Field Vegetables:

 Spring or fall application; incorporation is recommended. Apply at 1.5 to 4 mT/ac. Sandy soils, soils low in organic matter; cucurbits and brassicas will respond to higher rates.

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