The book that started a backyard worm revolution over three decades ago continues to be the definitive guide to vermicomposting—the process of using worms to recycle human food and other organic waste into a nutrient-rich fertilizer for plants. This book provides complete illustrated instructions on setting up and maintaining a small-scale worm composting system. The topics covered include worm species, anatomy of the red worm, the worm bin ecosystem, the care and feeding of worms, setting up a worm bin, harvesting worm castings, and the benefits of castings to plants.