Earth Science Earthworm Castings 4lb Natural Fertilizer, Organic Matter, Soil Builder

100% pure earthworm castings, no filler. Natural source of organic matter. Organic matter feeds microorganisms in the soil that produce nutrients for plants. Improves soil structure. Worm castings help make aeration space, or air pockets, in the soil. Increases water and nutrient holding capacity of soils Reduces Soil Compaction. Worm castings help to form soil aggregates which alleviate compaction in the soil. Reduces Soil Erosion. Soil that can absorb and retain water is much less susceptible to erosion. Reduces Soil Crusting. Soil that retains water well is much less prone to crusting.