Made in small batches to ensure that each bag is 100% microbial rich castings! A pure, all natural plant food produced by the incredible earthworm. Non burning, long lasting. Helps plant and root growth and improves aeration of soil. Use in gardens and flower beds at rate of ½ cup per plant every two months. In potting mixes add 1 part earthworm castings to 3 parts soil. For roses mix 4 cups into soil around each plant. Mix 25-50% with your soil to jump start a raised bed.