Palo Brea, Sonoran Palo Verde
Parkinsonia praecox

Family: Caesalpiniaceae (ses-al-pin-ee-AY-see-ee) (Info)
Genus: Parkinsonia (PAR-kin-son-EE-a) (Info)
Species: praecox (pray-koks) (Info)
Synonym:Cercidium plurifoliolatum
Synonym:Caesalpinia praecox
Synonym:Cercidium viride
Synonym:Cercidium spinosum
Synonym:Cercidium praecox

Category:

Perennials

Trees

Foliage Color:

Unknown - Tell us

Bloom Characteristics:

This plant is attractive to bees, butterflies and/or birds

Water Requirements:

Drought-tolerant; suitable for xeriscaping

Average Water Needs; Water regularly; do not overwater

Where to Grow:

Unknown - Tell us

Height:

15-20 ft. (4.7-6 m)

20-30 ft. (6-9 m)

30-40 ft. (9-12 m)

Spacing:

15-20 ft. (4.7-6 m)

Hardiness:

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)

Sun Exposure:

Full Sun

Danger:

Plant has spines or sharp edges; use extreme caution when handling

Bloom Color:

Pale Yellow

Bright Yellow

Bloom Time:

Mid Spring

Late Spring/Early Summer

Foliage:

Evergreen

Deciduous

Other details:

Unknown - Tell us

Soil pH requirements:

6.1 to 6.5 (mildly acidic)

6.6 to 7.5 (neutral)

7.6 to 7.8 (mildly alkaline)

Patent Information:

Non-patented

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Allow seedheads to dry on plants; remove and collect seeds

Properly cleaned, seed can be successfully stored

Regional

This plant has been said to grow in the following regions:

Green Valley, Arizona

Lake Havasu City, Arizona

Maricopa, Arizona (2 reports)

Peoria, Arizona (2 reports)

Phoenix, Arizona

Indio, California

Redlands, California

San Diego, California (2 reports)

show all

Gardeners' Notes:

2
positives
0
neutrals
0
negatives
RatingContent
Positive

On Oct 13, 2005, sun_baked_in_AZ from Maricopa, AZ wrote:

1st year from nursery; planted in Feb. slow to leaf out but once the hot weather hit it started growing very fast. Nursery person said you could stake outer branchs to grow upwards like a bowl.

Positive

On Oct 5, 2004, Xenomorf from Valley of the Sun, AZ (Zone 9b) wrote:

Wonderful full yellow color when it blooms in May.
Hybrids lose the green color in the bark.

Other synonyms include: Cercidium australe & Cercidium goldmannii.

A comparison between the flowers of five Palo Trees
--The Mexican Palo Verde (Parkinsonia aculeata), the upper petal starts out with red dots that eventually grow bigger and turn the entire top petal to red.
--The Palo Brea (Parkinsonia praecox), the upper petal has smaller & fewer red dots than the Mexican Palo Verde (P. aculeata) that don't grow bigger.
--The Blue Palo Verde (Parkinsonia florida), the upper petal is always a solid yellow just like the other four petals.
--The Little Leaf Palo Verde (parkinsonia microphylla), the upper petal is solid, all white, and t... read more