Bone meal is often used by organic gardeners to add phosphorus to garden soil, however many people maybe unfamiliar with this organic soil addition. Bone Meal is essentially what it says it is. It is a meal or powder made from ground up animal bones. The bone is steamed to increase its availability for plants. Our Bone Meal has an NPK value of 3-15-0. Phosphorus is essential for plants in order to help them flower. The phosphorus is easy for plants to take up. By using our bone meal will help your plants and bulbs grow bigger and stronger.