Espoma Bulb-Tone Organic Bulb Food, 4 lb. is an all-natural plant food specially designed to provide balanced nutrition for all types of bulbs. This organic formula is rich in bone meal and other natural organics, enhanced with Bio Tone, a proprietary blend of beneficial soil microbes that supports healthy bulb growth. for nurturing tulips, daffodils, crocus, and hyacinths, this USDA Organic product comes in a convenient 4 lb. pour bag with a 3-5-3 nutrient formulation to promote vibrant blooms and strong roots. Model Number: