Uses trace minerals and micronutrients naturally derived from fish Promotes vigorous growth of plants and vegetables Great for all indoor and outdoor plants For use in an Organic Gardening program Won’t burn plants Organic fertilizers derived from fish have been used for hundreds of years, as demonstrated by Native American agriculture practices. Harris liquid fish fertilizer uses trace minerals and micronutrients naturally derived from fish to stimulate healthy growth in the root systems of plants and vegetables. Great for fruits, vegetables flowers, and plants of all kinds including tomatoes, orchids, succulents, indoor potted plants, rose, fruit tree, african violet, cactus. Use indoors and outdoors to promotes vigorous growth. Won't burn plants when used according to label instructions.