Blue palo verde
Parkinsonia florida
Green bark does the photosynthesis when the leaves drop in drought.
Hardiness: zones 8 to 10
Light: full sun
Size: about 25 ft tall, 25 ft wide
From: Sonoran Desert
Drought-hardy once established
Here: Too tender to overwinter outdoors on the Lake Erie shore (zone 6b to 7a): grow it in a pot and bring it in, or treat it as an annual.
Good for: fixing nitrogen in the soil, pollinators, wildlife.
Native to: Desert Southwest, California. Hardy in zones 8 to 10.
The story
Palo verde means green stick in Spanish, and the name is exact: the bark is full of chlorophyll, so the tree keeps making food after it drops its tiny leaves in drought. It is the state tree of Arizona, and young saguaros often start life in its shade.
Planting
Full sun and fast-draining desert soil. Plant in fall so the roots can grow through the cool season.
Growing
Water deeply but seldom for the first two years, then rarely. Prune lightly; heavy cuts sunburn the green bark.
Harvest and use
A cloud of yellow flowers in April that native bees mob. The young green pods can be eaten like edamame, and Tohono O'odham and other desert peoples ground the dry seeds into meal.
What to watch for
Thorns. Too much water makes it weak and top-heavy.
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More native and wild plants
General guidance, not professional advice. Conditions vary by yard and year; for local specifics ask your county extension office. Never eat a wild plant you cannot identify with certainty. Traditional uses are shared as history, not medical advice. © 2026 Sean Priest · Irie Orchard. Terms & credits · Privacy · Home