Pure Worm Castings from Minnesota Worm Farm are a biologically active soil amendment made from 100% worm castings. Produced slowly over 6 to 9 months using clean food waste and aged wood chips, these fine-sifted castings provide plant-available nutrients, beneficial microbes, humic compounds, and natural growth-supporting compounds. The peat-free formula helps improve soil structure, water retention, aeration, nutrient cycling, and microbial activity without synthetic fertilizers or fillers. Use them in garden beds, as a top dressing, in houseplant soil, or across lawns and turf to support healthier roots and thriving plants.