FERTILIZER FRUIT 13-7-3 20LB.Specifications:.Ingredients: Ammonium Sulfate Calcium Sulfate Dihydrate Inert Iron Oxide Manganese Sucrate Mono-Ammonium Phosphate Muriate of Potash Sulfur Zinc SulfateArizona’s fruit and nut tree food with an N, P and K of 13-7-3 provides a balanced formula of nutrients to help grow high-quality fruit, nuts and grapes with maximum yield. Fertilize at least 3X during the growing season. Make the first feeding in late Winter or early Spring before new growth starts. Make the second feeding around June 1st and the third around September 1st.