Earth Science Earthworm Castings are made with 100% earthworm manure. We never cheapen our product with lower cost fillers of any kind. Professional growers have relied on earthworm castings for years to improve the soil, as they are an excellent source of organic matter. Regular use improves soil structure, increases water and nutrient holding capacity of soils, and encourages plant growth.
- Honest earthworm castings - no peat or fillers
- Improves overall soil structure
- Increases water and nutrient holding capacity of soils
- Encourages plant growth