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Honey mesquite, feathery bright green leaves and pale yellow flower spikes

Beginner’s guide

Mesquites

Various Latin names

The desert’s shade tree and pantry

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Native near you?

Highlights

A mesquite is the desert’s shade tree and its pantry at the same time. Feathery leaves throw a soft, dappled shade, yellow catkins hum with bees in spring, and by summer the branches hang with bean pods that people of the Southwest ground into flour for generations. At least 160 species of bees are associated with mesquites in the American Southwest.

Three mesquites are native to the U.S.: honey mesquite on the southern Plains and in the Chihuahuan Desert, velvet mesquite in the Sonoran Desert, and screwbean, the one with pods twisted like tiny corkscrews. Pick the right one and you get a tough, generous tree that lives on very little water.

Is a native mesquite a good choice for my yard?

Yes, if…

Skip it if…

Why native mesquites matter

Mesquite feeds nearly everything in the desert. Quail, doves and woodrats eat the seeds, white-tailed deer in one Southwest Texas study got 14.9 percent of their summer diet from honey mesquite fruit, and coyotes and roadrunners eat screwbean pods. Birds nest in the canopy. Mesquite is even one of the trees that shelter young saguaros, along with palo verde and ironwood.

Bees and caterpillars

Those 160 bee species are the headline. Mesquite is also a caterpillar plant: Prosopis hosts 55 native moths and butterflies in the Shropshire-Tallamy caterpillar records. Honey mesquite feeds the long-tailed skipper and Heiligbrodt’s mesquite moth, and the tiny ceraunus blue lays its eggs on woody legumes including mesquite.

A tree that feeds the soil

Mesquites get about half of their nitrogen from bacteria living in root nodules. Honey mesquite even helps the plants around it grow, by adding nitrogen to the soil under its canopy.

Screwbean needs friends

Screwbean is in trouble. NatureServe rates it vulnerable worldwide after catastrophic die-offs in the western part of its range, caused by some mix of heat, drought, flooding and fungal disease, on top of dams, water diversions and development. If you have the right wet, sunny spot, planting one is a real help.

Native mesquite, hybrid or Chilean?

The mesquite at a big-box garden center may not be native at all. Chilean and Argentine mesquites come from South America, and hybrids of those two with our velvet mesquite are often sold as “Chilean” or “South American Hybrids”. They grow fast, and many of them lose their thorns as they mature, which is part of the appeal. They also tend to suffer damage and dieback below 15 to 20°F. Mesquites cross so easily that the University of Arizona calls it almost impossible to obtain pure species seed, so buy from a nursery that knows where its seed came from.

Two other desert legumes get mixed up with mesquite. Palo verdes have green bark and bright yellow flowers. Desert ironwood has blue-green leaves and is nearly endemic to the Sonoran Desert. And native acacias bloom in round puffballs or short spikes instead of mesquite’s long catkins.

Prosopis, Neltuma or Strombocarpa?

You’ll see mesquites sold as Prosopis, and most extension guides still use that name. In 2022, a team of botanists showed that keeping all mesquites in Prosopis was “untenable,” and split the genus. Our honey and velvet mesquites are now Neltuma, screwbean is Strombocarpa, and true Prosopis is down to three Old World species. Search for both names when you shop.

Meet the native mesquites

Three mesquites, three very different sites. Honey mesquite is the cold-hardy one, velvet is the big Sonoran shade tree, and screwbean is for a streambank or a wash that carries water.

Honey mesquite

Neltuma glandulosa (formerly Prosopis glandulosa)

The widespread one, from Texas and Oklahoma into New Mexico. It grows as a single-trunk tree of 20 to 40 feet or a multi-stemmed shrub of 10 to 15 feet, with flat pods 4 to 8 inches long. Its yellow catkins bloom mostly in April, and it can flower up to four times in a season. The Lady Bird Johnson Wildflower Center calls it an excellent bee tree.

  • Height: 10 to 40 feet
  • Bloom: February to September, mostly April; yellow catkins
  • Pods: flat, 4 to 8 inches
  • Sun: full sun
  • Soil: dry and well drained
  • Cold: hardy to 0°F
  • Native regions: Southwest

Velvet mesquite

Neltuma velutina (formerly Prosopis velutina)

Arizona’s mesquite. Its leaflets carry fine hairs, which give it its name. Its sweet pods hold 20 to 30 percent sugars in the best trees, and the seeds are about 35 percent protein. Leaves usually come out after the last frost and drop in December. Young trees have small thorns that become less problematic with age.

  • Height: 20 to 50 feet; about 20 feet in most yards
  • Bloom: April, sometimes again after summer rain
  • Pods: 3 to 8 inches
  • Sun: full sun
  • Soil: dry and well drained
  • Cold: hardy to about 10°F
  • Native regions: Southwest and California

Screwbean mesquite

Strombocarpa pubescens (formerly Prosopis pubescens)

The one with the corkscrew pods. Its tightly coiled pods are under 2 inches long and look like little springs, and its Spanish name, tornillo, means screw. It’s a smaller tree, often 8 to 13 feet at the north edge of its range, and it needs water nearby. Its pollen is toxic to honeybees, though native animals from quail to coyotes eat the pods.

  • Height: 8 to 30 feet
  • Bloom: starts in May; pods ripen from July
  • Pods: coiled, under 2 inches
  • Sun: full sun
  • Soil: moist; roots need groundwater within about 13 feet
  • Cold: hardy to 0°F
  • Native regions: Southwest and California
When each species flowers. Plant a few and you’ll have blooms for months.

Which mesquite is right for my region?

In Texas and the southern Plains, plant honey mesquite. In the Sonoran Desert around Tucson and Phoenix, plant velvet mesquite. Screwbean is the pick anywhere in the desert where you can give it water.

Where native mesquites shine in your yard

Beginner tip

Before you buy a mesquite in Arizona, rub a leaflet between your fingers. Native velvet and screwbean mesquites have fine hairs, and a Pima County guide puts it simply: “non-native mesquites do not have hairs on their leaflets!”

How to grow native mesquites

Give it room

Full sun, all day, and space. A velvet mesquite can spread 30 feet, so plant well away from the house, the pool, sewer lines and the driveway.

Plant small

Trees that sit too long in big nursery containers develop circling roots. Choose a smaller tree, and check that its roots aren’t wrapped around the inside of the pot.

Water deep, not often

Honey mesquite needs deep watering to become a tree, then handles drought on its own. Soak the root zone slowly and let it dry out between waterings. A drip line that runs a little every day trains roots to stay near the surface, right where you don’t want them.

Screwbean is the thirsty one

Screwbean grows wild along rivers, and depth to water matters: groundwater deeper than 13 feet is likely too far down. In a yard, plant it where roof runoff collects or where you can water it through the summer.

Thorns, pods and mistletoe

Wear leather gloves to prune. Rake pods in late summer if they bother you, or leave some for the quail. Desert mistletoe often shows up in older mesquites; it generally does not kill a tree, so there’s no need to panic.

Native, but not always welcome

You may hear that mesquite is invasive. It’s native, and its overall range has changed little in 300 to 500 years. What changed is how thick it grows. Honey mesquite invaded grasslands after decades of overgrazing and fewer wildfires, with grazing animals spreading the seeds in their droppings. In Arizona, dense velvet mesquite thickets now cover vast areas that were mostly free of it 100 years ago.

That’s a land-management problem, not a reason to avoid a mesquite in your yard. Plant a native species where it belongs, keep it out of open grassland, and you have one of the best wildlife trees in the desert.

That’s a land-management problem, not a reason to avoid a mesquite in your yard.

What are good pairings for native mesquites?

Mesquite’s light shade is kind to other desert plants. Palo verdes, desert ironwood and desert willow round out a native tree grove, and desert marigold, blackfoot daisy and fairydusters bloom happily at the edge of the canopy.

Where can I buy native mesquites?

Native plant nurseries in Texas, New Mexico and Arizona sell honey and velvet mesquite, and screwbean turns up at specialist growers and native plant society sales. Ask for the species name and where the seed came from, and skip anything labeled “thornless,” “Chilean” or “South American hybrid.” Start with our list of native plant nurseries or order online.

Native mesquite FAQs

How big do mesquites get?

Anywhere from 10 to 50 feet, depending on the species and the water. Velvet mesquite can reach 40 feet or more, though about 20 feet tall and 30 wide is typical. Honey mesquite runs 20 to 40 feet as a tree, and screwbean tops out around 30.

Are mesquite pods edible?

Yes, from native trees. People have ground the pods of all three species into flour; the Acoma made flour and mush from honey mesquite. Pick from clean, unsprayed trees, and collect pods from the branch, since bruchid beetle larvae move into fallen pods fast.

Is mesquite invasive?

No, it’s native, but it spreads into overgrazed grassland. In a yard within its range, it’s a wildlife tree. On open range, it’s a weed that ranchers spend money removing.

Will mesquite roots damage my house or pipes?

They can if the tree is too close. Taproots go deep where there’s water, and in shallow soil side roots spread up to 60 feet. Give the tree plenty of room from foundations and pipes, and water deeply so roots grow down instead of out.

Do deer eat mesquite?

Deer eat the pods and some young growth. The Lady Bird Johnson Wildflower Center gives honey mesquite moderate deer resistance. Deer browse young growth, so protect new trees for a year or two.

How do I grow mesquite from seed?

Break the seed coat first. Honey mesquite seed requires hot water or mechanical scarification. Pour hot (not boiling) water over the seeds or nick each one with nail clippers before you sow them.

Plant nerd fact

Mesquite roots go down 175 feet

Velvet mesquite roots have been found 175 feet down in Arizona, a record reported by the ecologist Walter Phillips in 1963 and still cited in soil science papers. The Forest Service also reports a honey mesquite taproot observed at 190 feet. That’s deeper than a 15-story building is tall, all to reach water the rain will never deliver.

A native mesquite gives you shade, food and a tree full of birds in a yard that gets almost no rain. Pick the species that grows wild near you, give it room and a deep drink now and then, and see our guide to native acacias for thorny shrubs to plant nearby. Happy planting!

Sources
Emily Lessard standing among white coneflowers in a garden

Written by

Emily Lessard

Founder & Editor, The Plant Native

Emily Lessard is the founder and editor of The Plant Native, the site that helps homeowners across North America get started with native plants. She holds a Sustainable Landscapes certificate through the Pennsylvania Landscape & Nursery Association, is finishing a Native Perennial Garden Design Certificate at Temple University, and is the author of Plant Native: A Practical Guide to Over 100 Native Plants of North America (Quarto, March 2027). She gardens outside Philadelphia in the 8.3 Southeastern Plains ecoregion.

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