Citrus like orange, lemon, lime, avocado, mango, other fruit trees and plants need ample amounts of nitrogen, potassium, magnesium, manganese, iron, copper, zinc, sulfur, other macronutrients and micronutrients to produce strong growth, high yield, fruit size and juice quality. Citrus Gain is the easiest way to ensure plants have these meaningful elements. It is formulated specifically for citrus and other plants having similar nutrient requirements.