Jack's Classic All Purpose 20-20-20 Water Soluble Plant Food (1.5lbs) Fertilizer works well on all plant materials as a general-purpose fertilizer Powerful blend of nitrogen, phosphorus and potassium in a 1: 1: 1 ratio Feeds through the roots and leaves Especially effective on indoor foliage plants to keep leaves green and healthy Features the highest safety factor to prevent burning when applied as directed