Designed for vigorous feeders Produces abundant fruit development Boosts cellular tissue strength, helping plants resist disease Helps prevent blossom end rot OMRI Listed for Organic Gardening Specifically formulated for use on all veggies, tomato varieties, soft fruits, and berries. The ratios between N, P, and K are designed to supply the nutrition necessary to support the vegetative and flowering stages of heavy feeding plants. Happy Frog ® Tomato & Vegetable Fertilizer also contains calcium which helps prevent blossom end rot and builds stronger cell walls, boosting the plants ability to resist disease. Mycorrhizae and bacteria are included to help increase root efficiency and convert nutrients into a form plants can use.