True Organic Berry Food helps promote abundant organic fruits on berry plants that thrive in a low pH soil, and other acid-loving plants. This exclusive blend is derived from Poultry Manure, Seabird Guano, Sulfate of Potash, Soybean Meal, Fish Bone Meal, Crab Shell Meal, and Shrimp Shell. It can be used with in-ground and container plants. Apply monthly during the growing season. 4 lb. bag covers up to 58 sq. ft.