Best Trees for Low Desert Arizona: A Guide to Mature Sizes
When you move into a new property, one of the first things to consider is where to plant trees. A tree adds shade, beauty, and structure to a yard. It cools the space, builds a canopy, creates a better microclimate, and gives birds and pollinators a place to live. There are plenty of reasons to plant a tree, but choosing the right one is a big decision.
As you decide which tree to plant, pay close attention to its mature size. Planting a tree that eventually outgrows its space is one of the most common landscaping mistakes. The right tree in the right place, though, can become a real asset to your yard for years to come.
Key Takeaways: Best Trees for the Low Desert
- Choosing the right tree is crucial for a low desert yard; recommended trees are low-water-use and adapt well to desert conditions.
- This guide sorts trees by mature size: small (under 15 ft), medium (15-25 ft), and large (25 ft and up) for easy selection.
- Consider factors such as mature size, water use, and thorns when choosing; some trees can also be grown as large shrubs.
- Popular options for small yards include Texas Mountain Laurel and Kidneywood, while larger spaces suit Blue Palo Verde and Live Oak.
- Fruit trees like citrus can enhance your landscape by providing both shade and harvestable fruit.
Before You Choose
I organized this list by mature size: small trees for patios and tight spaces, medium trees for the average yard, and large trees for substantial shade. That makes it easier to find one that fits your space.
- Most of the trees on this list are low-water-use and desert-adapted, and several are true Arizona natives. I cover those in more depth in my native plants for Arizona guide.
- Mature height and width, water use, thorns, and litter are based on AMWUA’s ratings. Sizes are listed as height by width in feet.
- Give trees plenty of room to reach their mature size. Trees planted too close to a fence or property line can eventually damage the fence and cause problems with neighbors.
- Be careful about planting trees near raised beds or other garden areas too. Tree roots naturally seek out the water and nutrient-rich soil in garden beds, so expect to manage them eventually. Learn more in my guide to keeping tree roots out of raised beds.
If a full-size tree is more than your yard needs, consider a large shrub instead. A few trees on this list, like feather bush and kidneywood, can actually be grown either way. For more options built for that in-between space, see my best desert shrubs to plant.
Small Trees, Under 15 Feet
Good for patios, courtyards, and tight side yards where a big canopy would be too much.
| Plant | Height x Width (ft) |
|---|---|
| Texas Mountain Laurel | 10 x 8 ft |
| Mexican Buckeye | 10 x 10 ft |
| Kidneywood | 15 x 10 ft |
| Leatherleaf Acacia | 10 x 8 ft |
| Citrus | 10 to 20 ft, varies |
| Whitethorn Acacia | 10 x 15 ft |
| Mediterranean Fan Palm | 10 x 10 ft |
| Foothills Palo Verde | 15 x 15 ft |
| Anacacho Orchid Tree | 12 x 8 ft |
Texas Mountain Laurel
- Dermatophyllum secundiflorum (Southwest native, not Arizona native)
- Size: 10×8 ft. Growth: slow. Litter: very low, no thorns.
- Covered in more depth in my full guide to growing Texas mountain laurel. Purple, grape-scented flowers, slow growth, and very low litter make it a favorite near patios and pools. It’s native to Texas, New Mexico, and northeastern Mexico, not Arizona.
Mexican Buckeye
- Ungnadia speciosa (Southwest native, not Arizona native)
- Size: 10×10 ft. Growth: slow. Hardy to: 5°F. Litter: seasonal, no thorns.
- Rose-pink, fragrant flowers in spring on a large shrub or small patio tree. Coarse texture. A good choice where you want something a little different from the usual desert palette. Native to Texas, New Mexico, and northern Mexico.
Kidneywood
- Eysenhardtia orthocarpa (Arizona native, southeastern AZ)
- Size: 15×10 ft. Growth: moderate. Hardy to: 15°F. Litter: low, no thorns.
- Fragrant white flower spikes in summer, low litter, an underused native that works well as a large shrub or small tree.
Leatherleaf Acacia
- Acacia craspedocarpa (Not native, Australian)
- Size: 10×8 ft. Growth: slow to moderate. Hardy to: 20°F. Litter: low, no thorns.
- An Australian native, not an Arizona one, but a good fit for small spaces or large containers. Yellow puffball flowers spring to summer on rounded, gray-green foliage.
Citrus
- Citrus species (Not native, introduced food crop)
- Size varies by type and rootstock, roughly 10 to 20 feet.
- Don’t overlook citrus as a landscape tree. Most citrus is green year-round, has a naturally attractive rounded form, smells incredible when it blooms, and gives you fruit instead of just shade. If you want a small to medium tree and you’re willing to water a little more, citrus might be a good choice.
See my best fruit trees for the Arizona low desert for more options beyond citrus and how to choose. And learn more about growing citrus if you are ready to plant this tree.
Anacacho Orchid Tree
- Bauhinia lunarioides (Not Arizona native, Chihuahuan Desert)
- Size: 12×8 ft. Growth: slow to moderate. Hardy to: 15°F. Litter: low, no thorns.
- It’s beautiful in full bloom; white or pink clusters spring into summer, with butterfly-shaped leaves that attract bees and butterflies. A good small patio tree. Native to the Chihuahuan Desert, not Arizona specifically.
Whitethorn Acacia
- Vachellia constricta (Arizona native)
- Size: 10×15 ft. Growth: slow. Hardy to: 5°F. Litter: moderate. Medium thorns.
- Thorns, so keep it away from paths, but a true Arizona native with yellow puffball blooms.
Mediterranean Fan Palm
- Chamaerops humilis (Not native, Mediterranean/African)
- Size: 10×10 ft. Growth: slow. Hardy to: 10°F. Litter: low. Thorns on leaves.
- A multi-trunked palm for small areas and containers, native to the Mediterranean and Africa. Gives an oasis feel without the size of a full palm.
Foothills Palo Verde
- Parkinsonia microphylla (Arizona native)
- Size: 15×15 ft. Growth: slow to moderate. Hardy to: 15°F. Litter: seasonal. Sharp branch tips.
- Smaller and slower than blue palo verde, with lime green bark and sulfur yellow spring flowers. A true Arizona native and a good fit where blue palo verde would be too big.
Medium Trees, 15 to 25 Feet
The range that fits most average yards without overwhelming them.
| Tree | Mature size (H x W) |
|---|---|
| Desert Willow | 25 x 20 ft |
| Sweet Acacia | 20 x 20 ft |
| Cascalote | 20 x 20 ft |
| Ironwood | 25 x 25 ft |
| Mexican Bird of Paradise | 15 x 10 ft |
| Feather Bush | 15 x 15 ft |
| Palo Blanco | 20 x 10 ft |
| Velvet Mesquite | 25 x 25 ft |
| Texas Ebony | 20 x 15 ft |
| Canyon Hackberry | 25 x 25 ft |
| Mexican Blue Palm | 25 x 12 ft |
| Chaste Tree | 20 x 20 ft |
| Blackbrush Acacia | 15 x 15 ft |
| Fruitless Olive | 25 x 25 ft |
Desert Willow
- Chilopsis linearis (Arizona native)
- Size: 25×20 ft. Growth: fast. Hardy to: 0°F. Litter: seasonal, no thorns.
- Trumpet-shaped flowers spring through fall, loved by hummingbirds and carpenter bees. An Arizona native with an irregular, informal growth habit.
Sweet Acacia
- Vachellia farnesiana (Southwest native, present in southern Arizona)
- Size: 20×20 ft. Growth: moderate. Hardy to: 10°F. Litter: moderate. Small thorns, allergenic.
- Sweet-scented golden puffball flowers late winter into spring, a vase-shaped tree naturalized throughout the Southwest.
Cascalote
- Tara cacalaco (Not Arizona native, central/southern Mexico)
- Size: 20×20 ft. Growth: slow to moderate. Hardy to: 20°F. Litter: seasonal. Medium thorns.
- Stunning, fragrant yellow winter flower spikes followed by colorful seed pods. Vase-shaped with a medium texture. Native to central and southern Mexico.
Ironwood
- Olneya tesota (Arizona native)
- Size: 25×25 ft. Growth: slow. Hardy to: 20°F. Litter: seasonal. Medium thorns.
- A keystone Sonoran Desert species, slow-growing and long-lived, with dusty lavender blooms in late spring.
Mexican Bird of Paradise
- Erythrostemon mexicanus (Not Arizona native, Mexico)
- Size: 15×10 ft. Growth: moderate to fast. Hardy to: 15°F. Litter: high, no thorns.
- Yellow flower spikes bloom intermittently nearly all year, attracting hummingbirds. Upright, open form. Expect more litter than most trees on this list.
Feather Bush
- Lysiloma watsonii (Arizona native)
- Size: 15×15 ft. Growth: moderate. Hardy to: 25°F. Litter: high, no thorns.
- A true Arizona and Sonora native with a lush, ferny appearance unlike anything else on this list. Can be grown as a shrub or small tree. Late spring to early summer bloom.
Palo Blanco
- Mariosousa willardiana (Not Arizona native, Sonora, Mexico)
- Size: 20×10 ft. Growth: slow to moderate. Hardy to: 25°F. Litter: moderate, no thorns.
- Striking white, peeling bark makes this as much an accent tree as a shade tree. Upright and airy with fine texture. Native to Sonora, Mexico.
Velvet Mesquite
- Prosopis velutina (Arizona native)
- Size: 25×25 ft. Growth: moderate to fast. Hardy to: 0°F. Litter: seasonal. Medium thorns, allergenic.
- A classic low desert shade tree, true Arizona native, with a wide crown and fine texture.
Texas Ebony
- Ebenopsis ebano (Not Arizona native, Texas/Mexico)
- Size: 20×15 ft. Growth: slow. Hardy to: 20°F. Litter: moderate. Medium thorns.
- Rich, dark green foliage and an irregular form. AMWUA notes the bark can sunburn if the tree is overpruned, so let it keep its natural shape rather than shearing it hard. Native to southern Texas and Mexico. Learn more about how to prune desert shrubs to keep them healthy.
Canyon Hackberry
- Celtis reticulata (Arizona native)
- Size: 25×25 ft. Growth: moderate. Hardy to: 0°F. Litter: seasonal, no thorns.
- A sprawling native with a distinctive trunk, providing food and shelter for birds, butterflies, and mammals. Allergenic. Native to the western US and Mexico, including Arizona.
Mexican Blue Palm
- Brahea armata (Not Arizona native, Baja California/Sonora)
- Size: 25×12 ft. Growth: very slow. Hardy to: 15°F. Litter: low. Medium thorns.
- A bold, silvery blue fan palm that gives a genuine oasis feel. Well suited to containers while young. Native to Baja California and Sonora, Mexico.
Chaste Tree
- Vitex agnus-castus (Not native, southern Europe)
- Size: 20×20 ft. Growth: moderate. Hardy to: 15°F. Litter: moderate, no thorns.
- I have four of these, two framing either side of my front yard and two in the back. Lavender, pink, or white flower spikes summer through fall bring in bees, butterflies, and hummingbirds. I love the multi-trunk form of these plants. The seeds can be slippery underfoot on sidewalks, so think about where you place one or plan on keeping litter picked up. Moderate litter, but for the size and the way they frame a space, I think they’re worth it.
Blackbrush Acacia
- Vachellia rigidula (Not Arizona native, Texas/Mexico)
- Size: 15×15 ft. Growth: slow. Hardy to: 20°F. Litter: low. Medium thorns.
- Attractive light gray bark and light yellow spring flower spikes. Effective as a barrier planting given the thorns. Attracts bees and butterflies. Native to Texas and northeastern Mexico.
Fruitless Olive
- Olea europaea (Not native, Mediterranean, horticultural selection)
- Size: 25×25 ft. Growth: slow to moderate. Hardy to: 15°F. Litter: low, no thorns.
- A horticultural selection bred not to fruit or produce pollen. Use fruitless selections specifically, since some Arizona cities and counties restrict fruiting and pollen-producing olive trees due to allergy concerns. Rounded crown, classic Mediterranean look.
Large Trees, 25 Feet and Up
Shade trees. Give them the room their mature size demands before you plant. If you’re looking for other ways to create shade in your garden without committing to planting a tree, check out these ideas.
| Tree | Mature size (H x W) |
|---|---|
| Blue Palo Verde | 30 x 30 ft |
| Willow Acacia | 30 x 15 ft |
| Shoestring Acacia | 30 x 20 ft |
| Floss Silk Tree | 30 x 25 ft |
| Chinese Pistache | 40 x 35 ft |
| Live Oak | 40 x 50 ft |
| Ghost Gum | 40 x 25 ft |
| Texas Honey Mesquite | 30 x 30 ft |
| Palo Brea | 25 x 30 ft |
| Evergreen Elm | 35 x 35 ft |
Blue Palo Verde
- Parkinsonia florida (Arizona native)
- Size: 30×30 ft. Growth: fast. Hardy to: 15°F. Litter: seasonal. Small thorns, allergenic.
- Arizona’s state tree, a cloud of bright yellow spring blooms, and a true native. Needs the full 30 feet of room.
Willow Acacia
- Acacia salicina (Not native, Australian)
- Size: 30×15 ft. Growth: fast. Hardy to: 20°F. Litter: moderate, no thorns.
- A narrow, upright Australian native that works as a screen for tight spaces despite its height. Fragrant cream flowers in spring. Can reseed easily, so watch for volunteers.
Shoestring Acacia
- Acacia stenophylla (Not native, Australian)
- Size: 30×20 ft. Growth: fast. Hardy to: 18°F. Litter: moderate, no thorns.
- Fine, weeping foliage on an upright, airy Australian native. Tall screening tree. Avoid overwatering; it handles dry conditions better than wet ones.
Floss Silk Tree
- Ceiba speciosa (Not native, Brazil/Argentina)
- Size: 30×25 ft. Growth: moderate. Hardy to: 26°F. Litter: seasonal. Thorns on trunk.
- A spectacular flowering tree, pink to red showy blooms in fall on a distinctive spiny trunk. Native to Brazil and Argentina.
Chinese Pistache
- Pistacia chinensis (Not native, China/Philippines)
- Size: 40×35 ft. Growth: moderate. Hardy to: 10°F. Litter: seasonal, no thorns.
- My neighborhood has planted a lot of these, and people love them for the fall color, one of the few reliable options for real red and orange foliage in a low desert yard. Dense shade, rounded crown. Female trees produce red fruit birds enjoy. Allergenic from male tree pollen. Look for ‘Red Push’ and other selections bred for stronger color.
Live Oak
- Quercus virginiana (Not Arizona native, southeastern US)
- Size: 40×50 ft. Growth: moderate. Hardy to: 0°F. Litter: seasonal, no thorns.
- A true shade tree with a wide crown, one of the few on this list that accepts lawn conditions. Allergenic. Consider the mature size seriously; 50 feet wide is a lot of yard.
Ghost Gum
- Corymbia papuana (Not native, Australia/New Guinea)
- Size: 40×25 ft. Growth: moderate. Hardy to: 22°F. Litter: moderate, no thorns.
- Smooth, bright white bark makes this an eye-catching accent as much as a shade tree. Native to Australia and New Guinea. Upright, open form.
Texas Honey Mesquite
- Prosopis glandulosa var. glandulosa (Southwest native, not AZ’s native mesquite)
- Size: 30×30 ft. Growth: fast. Hardy to: 0°F. Litter: seasonal. Large thorns, allergenic.
- A wide-crowned mesquite with real thorns, so plant it with clearance from paths. Look for thornless selections if you want the tree without that drawback. Attracts native bees and pollinators. Native to Texas, New Mexico, and northern Mexico. Arizona’s own native mesquite is velvet mesquite, covered in the medium trees section.
Palo Brea
- Parkinsonia praecox (Not Arizona native, Baja California/Sonora)
- Size: 25×30 ft. Growth: fast. Hardy to: 25°F. Litter: seasonal. Small thorns.
- An umbrella-like form with distinctive lime-green bark, native to Baja California and Sonora into South America. Attracts bees, birds, and wildlife.
Evergreen Elm
- Ulmus parvifolia (Not native, China)
- Size: 35×35 ft. Growth: fast. Hardy to: 20°F. Litter: seasonal, no thorns.
- This is the focal point of our front yard, a large, umbrella-shaped tree we love. The roots are moderately aggressive, and we have them throughout our yard. Plants on the tree side of our walkway struggle to grow with all the root competition nearby.
AMWUA recommends keeping evergreen elm at least 15 to 20 feet from foundations, underground utilities, and sewer lines, and 10 to 15 feet from a pool. In low desert soil specifically, evergreen elms are also more susceptible to Texas root rot, a soil-borne disease that can take down an otherwise healthy-looking tree. And despite its reputation as a tough desert tree, it isn’t actually drought-tolerant. It wants regular water through the growing season.
One popular tree you won’t find on this list: queen palm. It’s planted all over the low desert, but it struggles here more than most people expect: cold damage, iron deficiency, and a shorter life than the look promises. I get into the specifics of queen palms in the Arizona low desert if you’re considering one.
Once you’ve picked a tree and gotten it in the ground, don’t skip the last step. I write about why labeling trees is the last step in planting, and it makes a real difference years down the road when you’re trying to remember what you planted and where.
Low Desert Trees Frequently Asked Questions
Trees under 15 feet at maturity, like Texas mountain laurel, kidneywood, or foothills palo verde, fit small yards and courtyards without eventually overwhelming the space. Confirm mature size before planting, not just the size the tree is at the nursery.
Live oak, Chinese pistache, and velvet mesquite are reliable large shade trees for the low desert. Blue palo verde and desert willow provide filtered rather than dense shade. Match the tree to how much room you actually have.
Yes. Citrus trees like grapefruit and lemon work well as landscape trees in the low desert. They’re evergreen, have an attractive form, and provide fruit in addition to the shade and structure a purely ornamental tree would give.
It grows fast and provides good shade, but it isn’t drought-tolerant, and it’s more susceptible to Texas root rot in desert soil than in other climates. Roots are moderately aggressive, so keep it well away from foundations, pools, and utility lines if you plant one.
Blue palo verde, foothills palo verde, velvet mesquite, ironwood, desert willow, kidneywood, and whitethorn acacia are all true Arizona natives suited to a range of yard sizes. See my native plants guide for more on each.
Source
- Arizona Municipal Water Users Association (AMWUA). Landscape Plants for the Arizona Desert.
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