Citrus trees are susceptible to a plethora of problems. As with most leaf drop in citrus, treatment of leaf loss in lemons means narrowing down the field of candidates. This article will help with that.
Fertilize citrus trees on the holidays Valentines Day, Memorial Day and Labor Day. Citrus trees need nitrogen, phosphorus and potassium, which are called macronutrients. They are often referred to as NPK.