Bone meal is a by-product from meat (rendering factories). It consists of ground animal bones that have been cooked and sterilized, then ground into a meal. Espoma bone meal is the finest bone meal available. Bone meal helps develop sturdy root systems and stimulates plant growth. Espoma bone meal is an ideal supplement to fertilizers for bulbs, flowers, and roses. It is all-natural and approved for organic gardening. 4 lb. bag.