Fruit trees need good nutrition to grow and produce an abundant harvest, just like vegetables, flowers, and other plants. Or keep reading here to learn the 5 Easy Steps for fertilizing your fruit trees! Step One: Know When to Fertilize There IS a right and wrong time to fertilize your trees. Most of the Valley soils contain enough phosphorus and potassium but lack nitrogen. In our helpful video, Tricia explains if, when, and how much to fertilize your fruit trees. The University of Arizona Cooperative Extension has publications and information on gardening and pest control. Proper pruning, fertilization, and irrigation is the solid foundation to build healthier and more vigorous fruit trees. Fertilizing fruit trees and citrus trees ; The Phoenix area is a great location for growing citrus trees , as well as other fruit trees . John Begeman, another gardening expert of Arizona, points out that "more leaves equates to more and better fruit," and also recommends pruning "only if you must and only using the proper techniques." When is the Best Time to Fertilize my Fruit Trees. In a hot, dry climate like the Arizona desert, the best times to fertilize fruit trees revolve around some common U.S. holiday’s. As outlined in a 1987 article by Lowell F. True, there is some trimming that may be necessary. Citrus trees can live for 20 years or more, and proper care helps them to bear delicious fruit that makes the hard work worth it. Following the fertilizer application, generously irrigate the tree. Oranges and other citrus fruits like lemons, limes and grapefruit are grown in Arizona as commercial crops and for personal use. Adapted from and replaces: Chott, G., Chard, C., Bradley, L., 1998. Valentine’s Day or February 14; Memorial Day or Last Monday in May; Labor Day or First Monday in September; How to Apply Manure Growing Citrus Trees in Arizona- Tree Care and Fertilization Health Notice (COVID-19) The well-being of our customers is always top of mind for us at Custom Weed & Pest Control. According to the University of Arizona Cooperative Extension service, citrus is usually fertilized three times a year. Knowing when to fertilize your fruit trees can make a world of difference in their growth and yield. Spring is the perfect time to apply fertilizers but you should skip the year of planting. One of the most asked questions we get on the show each week during the gardening hour is, "How often should I fertilize my citrus trees, and when's the best time of year." In colder areas of the state, such as Payson, Prescott, Flagstaff, Show Low and Mount Lemon, deciduous varieties of fruit trees that require a chilling period grow as well. Citrus trees thrive in Arizona’s climate, but caring for them can be tricky if you don’t know what you are doing.