Happy Frog Citrus & Avocado Fertilizer is specially formulated with your citrus and avocado trees in mind. Nothing is better than the juicy, flavorful kick you experience when you taste a fresh lemon or lime, and no one can resist the smooth texture of a perfectly ripened avocado. This formula contains nitrogen for robust vegetative growth, as well as calcium and sulfur to address the specific needs of these beautiful and bountiful trees.