Earthworm castings, an organic multi-purpose fertilizer, can be used for all indoor plants and outdoor gardens as well. It promotes rapid growth, adds structure and aeration to the soil for excellent drainage, dramatically improves crop yields, is non-burning to plants when applied directly, and non-toxic. These quality worm castings are created by Fixit Farm, Inc. located in Maine and approved for use in organic crop production. Available in a 5 lb. bag.