Earth Science Earthworm Castings provide 100% pure vermicompost organic matter to improve soil health and encourage plant growth. Made without any peat or lower-cost fillers, these premium earthworm castings deliver a natural, non-burning, and odorless fertilizer that feeds beneficial microbes in the soil. The castings improve soil structure to retain more water and nutrients, increase microbial activity for nutrient-rich soil, and promote healthier plants naturally.

This 2-pack is ideal for all-purpose use on annuals, perennials, flower beds, vegetable gardens, lawns, shrubs, trees, fruits, potted plants, and raised gardens. Can be worked into soil at planting time, used as a top dressing, mixed into potting soil, or brewed into compost tea. For gardens and flower beds, spread a 1/4 to 1/2 inch layer around plants and water, reapplying every 3 months during growing season. For potted plants, blend 1 part castings to 4 parts soil or add 1/8 to 1/4 inch to the top of soil and water every 4-6 months.