A fertilizer blended specifically for acid soil loving plants like rhododendrons, azaleas, hydrangeas, evergreen trees and shrubs, blueberries, raspberries, and other plants that thrive in a low pH soil. To encourage lush flowers and fruit, apply the acid mix in early Spring for vegetative growth and again when blooms appear. Fall applications promote healthy root growth and boost resistance to extreme winter temperatures. Ingredients: cottonseed meal, langbeinite, fish bone meal, rock phosphate, humates and kelp meal.