Bonemeal fertilizer, also known as organic bonemeal, is a type of organic fertilizer made from animal bones. Bonemeal fertilizer is a slaughterhouse byproduct that uses beef bones ground up into a fine powder or turned into a granular form. Bonemeal fertilizer contains elements that can improve the health of flowering plants like roses and tulips. Bone meal fertilizer offers different benefits than other fertilizers made from animal parts like blood meal and fishbone meal.