Balanced Nitrogen, Phosphorus and Potassium for use on all indoor and outdoor plants. Feeds through both the roots and the leaves. More professional growers have used this product for all their growing needs than any other formula. It is a balanced blend of Nitrogen, Phosphorus and Potassium with fully chelated trace elements that works on all plant materials as a general-purpose fertilizer. Indoors it is especially effective on foliage plants to keep leaves green and happy.