Parkinsonia aculeata

Parkinsonia aculeataMexican Palo Verde

Tree

This desert-adapted, evergreen tree is short-lived (15 to 20 years). The midribs are very long (up to 16 inches) with tiny leaves, producing a weeping effect. It grows very fast to 15 or 20 feet with a crown spread as wide or wider.

Temperature

Thrives in heat. Young trees are badly damaged at about 18F. Older trees can tolerate slightly lower temperatures, to 15F.

Water requirements

Will grow without irrigation in low zones with 10 to 12 inches of annual rainfall, but best with some supplemental irrigation or runoff. Tolerates ample watering, such as in a lawn.

Sun

Full to reflected sun.

Soil

Tolerant. Accepts alkaline. Prefers sandy soils with good drainage.

Maintenance

None to periodic depending on location and taste.

Disadvantages

Becomes woody and less attractive with age. Subject to palo verde beetle, which eats the roots. Produces small, dirty pod. Petioles drop. Volunteers readily. Sharp thorns in spring. Occasionally suffers mistletoe infestations and frost damage. Mite infestation causes witches broom. Old trees rot on inside.

Parkinsonia aculeata bloomBloom

Beautiful yellow and orange flowers in early spring.

Fruit or Seeds

Slender yellowish pods to six inches long follow bloom.

Uses

Easily grows where little else will. Street, patio or lawn tree. Fast filtered shade for short-term use.

Origin

Native to the southernmost tip of Arizona into Mexico and other warm parts of America, but is widely cultivated and has naturalized in many areas. Member of the Fabaceae (Leguminosae) family.

Themes

Native, Desert Grassland, Desert, Desert Transitional, Tropical.

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