1. Grows 20’ to 30’ tall, and 20’ to 30’ wide. May suffer damage with temperatures sustained below 10°. Planting: Purple Ash Trees are moderately drought tolerant and very adaptable to a wide variety of soil conditions, even soils that are heavy in clay, providing that the soils are well-draining. “Sadly I would discourage anyone from planting a new ash tree in their yard,” Jost said. Arizona ash (Fraximus velutina) is an upright, stately tree with a rounded canopy of deep green leaves. Golden fall foliage. Arizona Ash Tree Information. Wikipedia lists many ash trees according to regions where they are found. Modesto Ash. Moderate growing deciduous tree. “While these trees have beautiful fall color, an invasive insect called the emerald ash borer is making its way across the U.S. and killing large numbers of ash trees in its wake. There are over 65 species of ash trees. Height 30 ft., width 25 ft. Sterile (seedless) tree with rounded canopy. Tolerates drought, wind and heat. Dig your hole in any area with full sun to partial shade (about 4 to 5 hours of sunlight daily) and make it twice as wide as the diameter and just as deep as the depth of the root ball. It is relatively short-lived, but may survive 50 years with proper care. Ash trees (Fraxinus spp.) Widely used in warm, arid areas. Mulberry Fruitless. Fast growing deciduous broadleaf tree. Arizona ash trees (Fraxinus velutina) are quite common to Arizona, and are well adapted to the sunny climate here.In fact, many other types of ash trees grow in Arizona as well. Likes direct sunlight. Read on to learn about growing Arizona ash trees. USDA zones 7-10. Hybrid of Fraxinus pennsylvanica ("Green Ash") and Fr. Grows 2’0 to 3’0 tall, and 20’ to 30’ wide. Velutina ("Arizona Ash"). Ideal for park-like settings.