Gardening
in Tucson, Phoenix,
Arizona and California

Gardening in Tucson, Phoenix, Arizona and California

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Parkinsonia hybrid: 'Desert Museum' / Hybrid Palo Verde

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Description
Form: Tree.
Leaf retention: Cold and drought deciduous.
Growth rate: Moderate to rapid depending upon water.
Mature Size: 20-30' high and 20-40' wide.
Flowers: Showy 1" yellow flowers with five petals.
Bloom: Profuse bloom in spring, lasting about one month. Some individuals may continue to produce a few flowers through summer. Bloom times later at higher elevations.
Fruit: Light brown seed pods vary from few to many, depending on variety.
Leaves: Small, oval, green leaflets. Provides light filtered shade.
Stems: Yellow-green, smooth bark, spineless, or spines are weak and non-sharp.
Roots: Nitrogen-fixing*.
Wildlife: Seedpods attract birds and small mammals.
Toxic / Danger: No.
Origin: California, Nevada, Arizona, Mexico.

Cultivation and Uses
USDA hardiness zones: 8-11a.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun.
Water once established: Deeply once a month. Supplemental water improves growth rate.
Soil: Well drained, pH 5.6-8.5 (acidic to alkaline). *Do not use a nitrogen fertilizer.
Prune: In warm weather to remove lowest branches for walk-under tree.
Litter: Flowers, pods.
Propagation: Seed.
Uses: Ornamental, filtered shade.

Comments
The hybrids are crosses between Blue, Yellow, and sometimes Mexican, Palo Verde species. Several variations, including 'Desert Museum', are available.



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Parkinsonia hybrid: 'Desert Museum' / Hybrid Palo Verde - flower

Parkinsonia hybrid: 'Desert Museum' / Hybrid Palo Verde tree