Hi Yield Bone Meal 0-10-0 is a slow-release source of natural phosphorus that promotes strong root development, stimulates plant growth, and helps hasten maturity. Ideal for bulbs, roses, flowers, shrubs, and vegetable gardens, it should be applied at 5 to 7 lbs. per 100 sq. ft. for beds, or ½ to 2 teaspoons per bulb placed about 2 inches below the bulb, depending on size.