Highest quaility available. Naturally rich in nitrogen, calcium, and phosphorus. Will not burn your plants. Bone meal is the easy, natural way to add phosphorus whenever your garden plants need it. It's the traditional plant food used when planting tulips, daffodils, freesia, crocus, anemones, gladiolus, and all other bulbs. Use it anywhere plants need phosphorus for strong roots, abundant fruit, and colorful flowers. High grade, 100% natural plant food that is particularly rich in phosphorus and calcium. Because it is not highly processed, it retains much of its original nitrogen for added plant nutrition. 6-12-0 formulation. 4 lb. box.