Wollastonite

Soil Supply Co. Verified independent store

→

Wollastonite (Calcium Silicate) is a dual-purpose mineral amendment providing both calcium and silica in a single ingredient — two minerals plants need in good supply throughout th e growing season to form thick, resilient leaves and strong stems. Using wollastonite as part or all of your liming ingredient lets you adjust pH while simultaneously building plant-available silica levels in the soil. The results speak for themselves — plants grown with wollastonite show improved resistance to pests, disease, and even drought, alongside higher yields and better overall quality. It pairs well with oyster lime and gypsum, creating overlapping calcium sources while getting more silica into the soil than any of those ingredients can provide alone. Show more