A fertilizer blended especially for acid lovers like rhododendrons azaleas camellias hydrangeas evergreen trees and shrubs blueberries raspberries strawberries potatoes and other plants that need a low pH. To encourage lush flowers and fruit use our Acid Mix in early spring for vegetative growth and again when blooms appear. Application Rate: Apply 5 lbs per 100 sq.ft. Additional application rates included on package. Available in 6 lb boxes 25 lb bags and 50 lb bags. Ingredients: Cottonseed Meal Langbeinite Rock Phosphate Acadian Kelp Meal and Humic Shale Ore.