Worm castings are one of a gardener's excellent friends. Our source of organic high-quality worm castings can be used for nearly all growing applications from adding to your favorite potting medium when planting, to top-dressing on existing plants, to brewing compost teas. Their fine texture allows for easy incorporation into the soil for optimal distribution while adding organic matter. Worm castings are biologically active, they contain essential plant nutrients that improve soil physical qualities, increase soil's water retention, improve soil aeration and promote plant growth. Every bag contains fresh, dark, rich worm castings and nothing else. Royal Gold's worm casting will become a new favorite for gardeners looking to improve soil health and plant yields. They are also an excellent way to accelerate compost piles.