100% Pure Earthworm Castings - Encourages Plant Growth - 5 lb. Provides a fertile foundation for garden soil. Natural soil conditioner encourages plant growth, improves aeration and water retention. Not composted, mixed or diluted in any way so you get more castings by volume than other brands. Improves germination by giving young plants a healthy start. Easy-to-use dry formulation wont harm even delicate seedlings. 5 lb bag.