Down to Earth Organic Acid Fertilizer Mix 4-3-6, 25 lbAn All Natural fertilizer blended especially for acid lovers such as rhododendrons, azaleas, camellias, hydrangeas, evergreens, blueberries, raspberries, strawberries, potatoes and other plants that need a low pH To encourage lush flowers and fruit, apply Acid Mix in early spring for vegetative growth and again when blooms appear. Fall Applications can help promote root growth and boost resistance to extreme winter temperatures 25 pound bag 4 3 6