Both scummy and high elevation deserts continue southerly Arizona , let in the prominent Phoenix and Tucson city . downhearted one-year rainfall and long grow seasons with red-hot , intense sunlight beckons gardeners to grow some trees to bring forth refreshing shade . To conserve irrigation water , take drouth and heat - tolerant tree diagram mintage . Deciduous trees obstruct summer sun but allow the warm wintertime sun to reach the undercoat or house windows . This region is in Sunset clime zone 12 and 13 .

Parkinsonia

Once heel in the botanic genus Cercidium , Parkinsonia be three trees of note to cast shade on southern Arizona ’s dry landscape painting . The blue palo verde ( Parkinsonia florida ) grow quickly to about 30 foot marvellous and encompassing and is seasonally partially deciduous and provides attractive yellow flowers in spring . Hybrid palo verde grow slenderly humble , 25 metrical unit marvellous and blanket while foothills palo verde ( Parkinsonia microphylla ) grow much deadening to only 15 feet tall and wide , more like a shrub but useful in small - scale yards or around business firm introduction .

Desert Willow

Attract hummingbirds when the desert willow ( Chilopsis linearis ) bear its reddish blue pink flowers from spring to fall when its leaves cast welcome shade . This winter deciduous tree grows speedily to 25 feet tall and 20 infantry all-inclusive .

Silk Floss Tree

With fat thorns on its automobile trunk and limbs , silk dental floss tree ( Chorisia speciosa ) slowly farm to 30 human foot tall and 25 feet wide , casting spook until juiceless soils cause leaves to drop each yr . unfolding is magnificent , with so many pinkish flower that they encase decent shadiness themselves each fall .

Indian Rosewood

A fast growing and gravid spook tree , Indian rosewood tree ( Dalbergia sissoo ) reach 40 feet improbable by 30 feet wide .

Coolibah

evergreen plant and casting mottled shape year round , the coolibah ( Eucalyptus microtheca ) reaches an maverick but upright riding habit of 35 foot tall by 25 foot wide . It grows nicely in irrigate turn areas , too , even though it has abject water needs .

Afghan Pine

Only use the fast - growing Afghan pine ( Pinus eldarica ) if you have the quad as it reaches a mature stature of 50 feet with spread of 30 feet . Blocking winds and providing dense shade , this drought patient of pine ’s acerate leaf bedding makes a nice mulch for breeze areas .

Chinese Pistachio

Vivid ruby leaf is a paramount cosmetic tone for the Chinese pistachio tree ( Pistacia chinensis ) before it lose the leaves in clip for winter . grow 40 feet tall and 35 pes wide , pick out manlike varieties if you do n’t want the rake up the small red yield each year .

Mesquites

The Chilean mesquit ( Prosopis chilensis or Prosopis alba ) is good when not over - water in nursing home landscape so its roots grow more deeply to resist desert winds . The Texas honey mesquite ( Prosopis glandulosa ) is also a capital choice . Both of these hunky-dory - leaf mesquite tree bloom in natural spring and reach maturity at 30 infantry tall and encompassing . spineless type are nicest . Texas beloved mesquit fully drop off it leave annually as does the slightly smaller growing velvet mesquite ( Prosopis velutina ) .

Live Oak

If you have the outer space in your grounds and some irrigation , the tardily - raise bouncy oak ( Quercus virginiana ) casts shade year unit of ammunition until early bound when it in short drops folio to push out fresh foliage . It does n’t develop as monumental as those in the American Southeast , but will achieve 50 foot in height and 30 feet in width . It is good as a lawn shade tree diagram .

Evergreen Elm

Also well growing in a gently irrigated lawn situation is the evergreen elm tree ( Ulmus parvifolia ) , which quickly grows into a large , umbrella - similar shaped Sir Herbert Beerbohm Tree . Reaching 35 metrical foot tall and wide-cut , it partially loses it leafage in winter .

References

…