Bone meal is a powdered fertilizer ground from animal bones. Due to different processing methods, the prepared bone meal can be divided into three types: raw bone meal, steamed bone meal and degummed bone meal. When making bone meal, leftover ribs, cavity bones, chicken bones, fish bones, etc. Soak in clear water for 1 ~ 2 days, repeatedly wash to remove salt, then put it in a pressure cooker for 20 ~ 30 minutes, degrease, dry, crush and grind into fine powder. You can also put the washed and dried bones on the stove and bake them slowly, and then grind them into fine powder. But you can't put the bone meal into the pot and burn it to ashes, because it will reduce the fertilizer efficiency of the bone meal.

Bone meal is a good slow-acting phosphate fertilizer, which can be mixed into culture soil as base fertilizer or sprinkled on the surface of basin soil as topdressing. Flowers and trees bloom brightly after applying bone meal.