Blue Palo Verde
Parkinsonia florida
Arizona's beloved state tree with blue-green photosynthetic bark and a dazzling canopy of bright yellow spring blooms.
Cold hardy to about 10–15°F, a low- and mid-desert Sonoran native with excellent heat and frost tolerance.
AMWUA Notes
Extremely low water; needs little supplemental irrigation once established, and overwatering forces weak, storm-prone growth.
Care Guide
Once established, water deeply once a month in summer. Newly planted trees need weekly deep soaking for the first year.
Prune lightly in late winter to shape. Avoid heavy pruning — the green bark photosynthesizes.
No fertilizer needed. Native desert soil is sufficient.
Palo Verde Borer beetle larvae can damage roots. Watch for sawdust-like frass at the base.
Brilliant yellow bloom in March-April. Drops small leaves in drought stress — this is normal.
Soil, Feeding & Propagation
Well-draining sandy, gravelly, or decomposed-granite soil; native to desert washes and tolerant of caliche and alkaline pH 7.5–8.5
Needs well-drained soil.
None — thrives in lean desert soil without fertilizer.
Grown from scarified seed; fast to establish from seed or nursery stock
25–30 ft
Deep, non-aggressive roots, but the wide canopy and litter warrant 15+ ft from pools and 10+ ft from foundations
Placement Tips
- •Broad 30 ft canopy of blue-green photosynthetic bark; give it open space as a native shade specimen.
- •Small thorns and seasonal flower and pod litter make it a poor poolside choice; keep 15+ ft from pools.
- •Arizona state tree and a pollinator magnet; pair with saguaro, mesquite, and desert wildflowers.
- •Full sun; prune structurally when young to resist monsoon winds.
Features
Best Uses
Ecological Value
Attracts
Companion Plants
Quick Stats
Design Styles
Include in Your Project
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Use this care guide to maintain your Blue Palo Verde. Questions about your landscape? Reach out anytime.
Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.
Blue Palo Verde — common questions
Answers for low-desert Phoenix conditions, drawn from this plant’s growing data.
How much water does Blue Palo Verde need in Phoenix?
Blue Palo Verde is a very low-water tree once established. Once established, water deeply once a month in summer. Newly planted trees need weekly deep soaking for the first year. Extremely low water; needs little supplemental irrigation once established, and overwatering forces weak, storm-prone growth.
How big does Blue Palo Verde get?
Expect roughly 30 ft tall and 30 ft wide at maturity, with a moderate growth rate. Allow about 25–30 ft of spacing when planting. Deep, non-aggressive roots, but the wide canopy and litter warrant 15+ ft from pools and 10+ ft from foundations.
Can you plant Blue Palo Verde near a pool?
Not ideally. Blue Palo Verde is not rated pool-friendly, so it is better placed away from the pool deck and skimmer. Litter is rated seasonal.
Can Blue Palo Verde handle Arizona heat and winter frost?
Blue Palo Verde is hardy in USDA 9-11 and wants full sun. Cold hardy to about 10–15°F, a low- and mid-desert Sonoran native with excellent heat and frost tolerance. Brilliant yellow bloom in March-April. Drops small leaves in drought stress — this is normal.
Does Blue Palo Verde have thorns?
Yes — Blue Palo Verde has small thorns. Site it back from walkways, seating and pool decks where people brush past.
Is Blue Palo Verde safe around pets?
Blue Palo Verde is listed as pet-friendly in this guide. If your dog is a determined chewer, check any new plant with your vet before planting.
When does Blue Palo Verde bloom in Arizona?
Blue Palo Verde blooms in spring, with bright yellow flowers. The bloom draws bees, butterflies, hummingbirds, moths.
How much maintenance does Blue Palo Verde need?
Blue Palo Verde is moderate-maintenance. Leaf, flower and pod litter is rated seasonal. Prune lightly in late winter to shape. Avoid heavy pruning — the green bark photosynthesizes.
What kind of soil does Blue Palo Verde need?
Well-draining sandy, gravelly, or decomposed-granite soil; native to desert washes and tolerant of caliche and alkaline pH 7.5–8.5. It needs no supplemental feeding. No fertilizer needed. Native desert soil is sufficient.
Is Blue Palo Verde native to Arizona?
Yes. Blue Palo Verde is native to Arizona and to the Sonoran Desert, so it is adapted to local rainfall, soil and heat.