Bone meal protects plants under adverse weather conditions. Bone meals also help plants to attain maturity quickly.Bone meal is an excellent source of phosphorus. It has 12 to 16% of phosphorus. It is beneficial for root crops such as onions, carrots, radishes, turnips, and parsnips. Flowers that grow from bulbs, tubers and corns also benefit largely from its application.
Bone meal takes time to break down, releasing nutrients into the soil slowly and providing plants with a steady dose of important phosphorous and calcium, instead of a quick burst. Unlike some chemical fertilizers, bone meal won't burn plants if you apply too much. Small amounts of other important nutrients, like zinc and magnesium, are also in bone meal, and have a variety of beneficial effects on plants.