Here is a terrific way to boost your tired soil! Made of coir fibre (from coconuts), worm castings, mycorrhizae, organic fertilizers, and water-saving polymers, compressed into convenient 1.25 inch wafers. Simply water to expand and blend into your soil. Helps to loosen soil, fertilizes your plants for 3-4 months, and helps promote strong root systems. Great for tomatoes, herbs, vegetables, and flowers. Lightweight, easy to store and use.