One of the best desert shade Trees. Resembles thorn tree of the African savanna. ... THORNLESS: This full sun tree has a fast growth rate beyond 20 feet and is cold hardy to 15 degrees F. It has a uniform appearance, upright growth and strong branch angles. Moderate grower to 30 ft. tall and wide with age. Prosopis velutina, Arizona or Velvet Mesquite Forms a lush airy canopy that is excellent for providing filtered shade in hot, dry climates. Tough thorn less tree to 25 x 30 feet. No problem with heat, wind, cold or drought. This vigorous tree has a wide spreading crown, deep green leaves, and is deciduous. An improved grafted selection, Phoenix® Thornless Mesquite has a solid root system and healthier, stronger branches than standard varieties. Refined foliage and stems. Care is similar to Argentine mesquite. Semi-evergreen. Highly drought resistant but fast growing with adequate water. Mojave Desert Miracle Mesquite is a hardy thornless variety of mesquite that is well adapted to the harsh desert environment. A form is available without thorns or with very small thorns. Prosopis chilensis, Chilean Mesquite. Full sun, any well drained soil, deep infrequent water once established. Has fragrant yellow flowers in spring. Chilean mesquite is the species most often used in the landscape. One of the best shade trees for desert communities. The foliage is lacy and fern-like; leaflets give the canopy a lush, green look. The seeds are 100% organic and hand-harvested from a huge healthy mother tree in the desert. This thornless variety is excellent, especially if you have pets or children that Full sun. Mesquite – Thornless Hybrid . Cutting grown. Open, airy crown gives plentiful shading with slightly weeping form that is intensely graceful.