Bone Meal 3-15-0 Plus 24% Calcium Greenway Biotech Brand 25 Pounds 50 Pounds of Bone Meal 3-15-0 Contains 3% Nitrogen,15% Phosphorus, and 24% Calcium Organic Fertilizer to Help Develop Beautiful Blooms and Promote Roots Growth Great source of Organic Phosphorous, Which Helps with Cell and Seed Formation, Cell Division, and Root Growth in Plants. Also, It Is a Great Source of Organic Calcium (24%) Supplement. Can be Used in any Situation, Where a Controlled Release Form of Phosphorous is Needed Highest Quality and Purest Organic Bone Meal Without Any Additives