Mature trees seem to set and hold fruit better than younger trees, so have patience. However, they should not be watered every day. Pomegranates can stand very dry air conditions but, to produce good fruit, … also fall. COCHISE COUNTY MASTER GARDENERS Sierra Vista - Main Office. Begin a normal watering routine about a month before the last spring frost forecast in your area. 1140 N. Colombo Sierra Vista, AZ 85635-2390 (520) 458-8278 x2141; cochisemg@cals.arizona.edu There is a dwarf variety of pomegranate ( Punica granatum "Nana") that makes an ideal potted plant. Water less often once the citrus trees are established. Instead, water with large amounts of water infrequently: about once every five to seven days in the summer and once every 10 days in the fall and spring. Therefore, deep watering with a soaker hose, once a week during the summer and … The Pomegranate tree is also one of the easiest fruit trees to grow and thrives in our local climate. After the first growing season, Arizona's average annual rainfall of 12.7 inches is usually not enough to sustain the citrus trees. Move the pomegranate outside once nighttime temps have risen to above 50 degrees F. (10 C.). Pomegranate tree care for the winter is almost over once spring is imminent. Research from the University of Ari-zona has found that mature citrus trees use about 60 inches of water per year. Plant them in a spot with full sun exposure, and they can flourish. Watering a pomegranate plant is important if you want optimum fruit production. Since they are well-suited for arid environments, once established, they have low to moderate water requirements and are drought tolerant. How much or little you water will depend on several factors including how much rainfall occurs and soil type and drainage. Estimating Tree Water Use This is the $64,000.00 question, and the answer depends on tree age, tree size, citrus species, climate and soil type. The entire tree will die if water is withheld for an extended period of time. Citrus trees require large amounts of water, especially in the summer months.