Espoma Flower-Tone Organic Dry Plant Food, 4 lb. is a specially formulated all-natural bloom booster designed to nourish both annuals and perennials. This organic plant food is low in nitrogen and rich in potash and essential trace nutrients, which work together to promote and extend abundant flowering. It features Bio Tone, a proprietary blend of beneficial soil microbes that enhance soil health and plant growth. organic by the USDA, this product comes in a convenient ready-to-use 4 lb. pour bag with a balanced 3-4-5 nutrient formulation, making it easy to feed your garden naturally and effectively.