Flowers. Screwbean Mesquite. Prosopis pubescens.	Flower. Screwbean Mesquite. Prosopis pubescens.
Leaves. Screwbean Mesquite. Prosopis pubescens.	Seed Pod. Screwbean Mesquite. Prosopis pubescens.

Screwbean Mesquite Tree. Prosopis pubescens, Bean or Legume Family ( Fabaceae ), Screwbean Mesquite. We wish to thank Wikipedia, the free encyclopedia for some of the information on this page. We share images and information with Wikipedia. The honey mesquite or screw ( Prosopis pubescens ) is a small tree or shrub native to the arid regions of Mexico ( Baja California , Chihuahua , Coahuila and Sonora ) and the southwestern United States, ( from Texas to California ). A single or multi - stemmed deciduous small tree or shrub reaching up to 20 to 40 feet tall and about the same or slightly wider width; vase shaped, open and spreading. Quick Notes: Height: About 20 to 30 feet. Same spread. Flowers: Pale green - yellow, 2 to 3 inches long, appearing in late spring and early summer. Inflorescences, axillary spikes. Blooming Time: April to June. Seed Pod: A light brown or tan tightly coiled legume, 1 to 2 inches long, ripening in the middle to late summer. Leaves: The leaves are Alternate, bipinnately compound, 1 to 2 inches long, usually with only two major leaflets (may occasionally have 2 to 3 pairs), each leaflet has 6 to 9 pairs of narrow minor leafletsabout 1/2 to 1 inch long. They have entire margins with a fuzzy surface, green, to gray-green above, slightly paler below. Stems/Trunks: An attractive gray shaggy - rough trunk; the twigs are jointy, branches gnarled and twisted. Some spines about 3/4 inch long on the stems. Found: The USDA claims it is native to the USA (AZ, CA, NM, NV, TX, UT). It is also native to the arid regions & riparian areas of the Sonoran and Chihuahuan deserts of Mexico, in Baja California, Chihuahua, Coahuila, and Sonora. Elevation: 0 to 5,500 feet. Hardiness: USDA Zone 8a: to -12.2 �C (10 �F) USDA Zone 8b: to -9.4 �C (15 �F) USDA Zone 9a: to -6.6 �C (20 �F) USDA Zone 9b: to -3.8 �C (25 �F) USDA Zone 10a: to -1.1 �C (30 �F) USDA Zone 10b: to 1.7 �C (35 �F) USDA Zone 11: above 4.5 �C (40 �F) Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral) 7.6 to 7.8 (mildly alkaline) Sun Exposure: Full Sun Habitat: Sandy desert soils, hot, sunny areas, good drainage, desert riparian woodland, and shrub habitats; up to 5500 feet elevation. Miscellaneous: Flowering Photos Taken At Glendale, Arizona Xeriscape Demonstration Garden. April 10, 2006. Hardiness 10 - 15�F. Maintenance: winter pod cleanup.