FoxFarm Happy Frog Citrus and Avocado Fertilizer 7-3-3 is a specially formulated plant food that is designed to produce juicier and flavorful citrus and avocados. It features an NPK ratio of 7-3-3 with just the right balance of primary nutrients to boost the development of citrus and avocado trees so that it can deliver fresh-tasting lemon and lime, as well as smooth and perfectly ripe avocados. Its Nitrogen content promotes healthier vegetative growth, plus it also has Calcium and Sulfur to help improve plant's disease resistance and encourage bountiful trees. It also includes Mycorrhizal fungi to help enhance root efficiency which improves water absorption and nutrient uptake. It is OMRI listed so it is safe for organic gardening. Available in 4 lb. bag.