For results that are sure to amaze, use this Miracle-Gro Shake 'n Feed plant food for tomatoes, fruits, and vegetables. This fertilizer is specially formulated for indoor and outdoor use as well as in-ground and container gardens. It offers the added benefit of organic ingredients. Just shake it on! One application feeds plants for up to 3 months. This plant food includes calcium to help form the strong cell walls required for high-quality produce. It also helps prevent edible crop issues such as blossom-end rot, bitter pits, and fruit cracking, which are commonly associated with calcium deficiency. This product is backed by the Scotts No-Quibble guarantee.