Jobe's 4 lb. Bone Meal. It is a 100% organic source, approved for organic gardening. It is great for flowers, bulbs, tubers, and root crops. It applies easily by hand or using any type of spreader. It is a dry fertilizer type, fast release, and can be used in fall and spring. It is compatible with all purpose, bent grass, bermuda, bluegrass, centipede, fescue, rye, St. Augustine (Floratam|closepare, |Tall Fescue, Zoysia. It has an N-P-K ratio of 2-14-0 and longevity of 26 weeks.