IFFCO Urban Gardens Bone Meal is a natural and organic fertilizer, made by heating and sterilizing bones to remove any potential pathogens or contaminants, and grounded into fine powder. It is an excellent source of Phosphorus, which is essential for plant growth & development, root development, flowering & fruiting in plants. In addition, it also contains Calcium, which strengthens plant cell walls and improves plant health and disease resistance. Bone Meal is a slow-release fertilizer and is thus a great option for plants that require a steady supply of nutrients over an extended period.