Q. What’s the difference between vermicast and vermicompost?
Vermicast is concentrated worm manure, whereby the worms have worked and reworked the organic material over and over. Vermicompost contains small amounts of undigested organic matter mixed in with the worm castings. Those particles, referred to as “humus,” will continue to break down in the soil and release valuable nutrients to your plants. What’s more, humus helps the soil hold water and makes the dirt feel soft and crumbly, which promotes root growth.