Espoma Organic Bone Meal is an all-natural organic source of nitrogen, phosphorus, and calcium that helps develop sturdy root systems and promotes plant growth. 4-12-0 guaranteed analysis with 12-percent calcium. Bone Meal breaks down slowly providing a long-lasting reservoir of these essential plant nutrients. 100-percent natural and organic approved for organic gardening, it is a registered Organic Input Material meaning it meets all requirements for organic production. Like all Espoma Organic plant foods, no sludges or fillers are ever used. And because it is made in the Espoma state-of-the-art solar powered manufacturing facility, consistency and quality are guaranteed.