Arizona's Best AZB70422 All Purpose Fertilizer, 10-10-10, 20 lbThis all purpose fertilizer is earth friendly, 100% organic fertilizer, which contains equal parts of nitrogen, phosphorus and potassium. Also cantains 10% sulfur and 5% iron. iron, iron improve overall color and disease resistance, sulfur maintain the green color of leaves. Ideal for use on shrubs, trees, container plants and grasse. 20 lbs 10 10 10 All purpose fertilizer Is a uniform 1: 1: 1 ratio that contains equal parts of nitrogen, phosphorus