Give your plants optimal chance for growth and production by providing the necessary nutrients that the Great White formula contains. The scientifically balanced blend contains 16 species of mycorrhizal fungi, 14 species of bacteria, and 2 species of Trichoderma, all which promote root and plant growth. The powder is safe to use on seeds, seedlings, or cuttings grown in hydroponic solutions, soil, or other mediums. Simply apply the powder directly or mix one teaspoon with one gallon of water.