Espoma Organic Bone Meal is an all-natural organic source of nitrogen, phosphorus, & calcium that helps develop sturdy root systems and promotes plant growth. Bone Meal breaks down slowly providing a long-lasting reservoir of these essential plant nutrients. Like all Espoma Organic plant foods, no sludges or fillers are ever used. And because it’s made in our state-of-the-art solar powered manufacturing facility, consistency and quality are guaranteed. Bulbs and Gardens:Apply at a rate of 10 pounds per 100 sq. ft., raking it well into the soil. For individual bulbs, mix 1 teaspoon of Bone Meal into the soil. Shrubs and Trees:Apply 1 or 2 pounds depending upon size of shrub or tree. Rake well into soil under entire spread of shrub or tree. Potted Plants:Apply 2 oz or one heaping tablespoon per pot and work into the soil. Water thoroughly after applying.