VanSil CS-1 Wollastonite

While both products raise soil pH, VanSil CS-1 provides the added benefit of plant-available silicon. This helps strengthen cell walls and improves plant resilience, whereas traditional limestone primarily focuses on calcium and pH adjustment.

Yes, VanSil CS-1 is OMRI certified for organic use. It is processed without chemical treatments and contains low levels of heavy metals, sodium, and chloride.

It is particularly effective for vegetables, with notable benefits for cucurbits like cucumbers and squash, as well as brassicas. The silicon content helps these crops develop stronger structures and better resistance to environmental stressors.

Yes, it is suitable for soilless mixes. Because it is a slow-release mineral, it provides a steady supply of calcium and silicon to container-grown plants throughout the growing season.

You can apply it via soil incorporation before planting or as a top dressing around established plants. Since it is a granular, slow-release product, it works best when mixed into the top layer of soil or potting media.

No, VanSil CS-1 is not water-soluble. It is a natural mineral that breaks down slowly in the soil, providing a long-term, consistent source of nutrients rather than an immediate liquid feed.