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Xeriscape Landscaping Plants For The Arizona Desert Environment.
Pictures, Photos, Information, Descriptions,
Images, & Reviews.
Trees.

Palo Brea Trees, Parkinsonia praecox.

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Palo Brea, Parkinsonia praecox. Also Called: Sonoran Palo Verde, Cercidium praecox, Cercidium plurifoliolatum, Caesalpinia praecox, Cercidium viride, Cercidium spinosum. Xeriscape Landscaping Plants For The Arizona Desert Environment. Pictures, Photos, Information, Descriptions, Images, & Reviews. Trees.
Palo Brea, Parkinsonia praecox,
Photo Taken May 10, 2006 At Peoria, Arizona.
Flowers. Palo Brea, Parkinsonia praecox. Also Called: Sonoran Palo Verde, Cercidium praecox, Cercidium plurifoliolatum, Caesalpinia praecox, Cercidium viride, Cercidium spinosum. Xeriscape Landscaping Plants For The Arizona Desert Environment. Pictures, Photos, Information, Descriptions, Images, & Reviews. Trees.Leaves. Palo Brea, Parkinsonia praecox. Also Called: Sonoran Palo Verde, Cercidium praecox, Cercidium plurifoliolatum, Caesalpinia praecox, Cercidium viride, Cercidium spinosum. Xeriscape Landscaping Plants For The Arizona Desert Environment. Pictures, Photos, Information, Descriptions, Images, & Reviews. Trees.
Flowers.
Palo Brea,
Parkinsonia praecox.
Leaves.
Palo Brea,
Parkinsonia praecox.

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Palo Brea Trees.
Parkinsonia praecox, Used To Be Pea Family ( Leguminosae ) Now Called ( Fabaceae ) Sub - Family ( Caesalpiniaceae ), Palo Brea. Also Called: Sonoran Palo Verde, Cercidium praecox, Cercidium plurifoliolatum, Caesalpinia praecox, Cercidium viride, Cercidium spinosum.

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Palo Brea grows to about 25 feet tall and wide, and it has a symmetrical, umbrella- shaped canopy. Its smooth green bark and bright yellow flowers have made this a very popular tree in the Phoenix area. It's leaf growth is lusher than the other Palo Verdes. Palo Brea is more cold sensitive than the other Palo Verdes and it is susceptible to some frost damage on new growth.

Palo Brea prefers good drainage. It thrives in areas of lots of sun and heat retention in the winter months. Avoid extensive pruning during the summer months. Supplemental watering during summer.


Quick Notes:

Height: Up to about 20 - 25 feet tall, spread about 20 - 25 feet.

Trunk/Twigs: Up to about one foot in diameter. The branches and most of the main trunk are trunk and branches blue-green.

Thorns: 2 - 3 inch long thorns. Usefull as a barrier tree.

Flowers: Bright yellow with five petals, pistils may be red - brown. 4 - 5 flowers in a cluster less than 2" long; covering the tree in spring, sometimes again in late summer. Yellow flowers in the spring. Upper flower petal often bears orange dots.

Blooming Time: May - June.

Seed Pods: 1 1/2 - 3 1/4 inches long; narrowly oblong, flat, thin pods; short-pointed at ends, yellowish-brown; maturing and falling in summer; 2-8 beanlike seeds. Seeds are dark red - brown.

Seeds: Smooth hard seeds are only slightly flattened with 2 to 7 found in each pod.

Leaves: Leaves are bipinnately compound, in pairs, about 1/2in long with leaflets of 1/4 to 1/8in; often leafless most of the year, normally each fork bearing 1-3 pairs of smooth, tiny leaflets, that are shed in early summer. This is in contrast to Foothills Palo Verde which usually has 4 or more tiny leaflets.

Found: Native to Mexico in Baja California, Baja Sur, Sinaloa, Sonora, Zacatecas, Guerrero, Jalisco, Michoacan, Oaxaca, & Puebla. Native to South America in Venezuela, olivia - Santa Cruz; Ecuador; Peru, Argentina - Catamarca, Chaco, Cordoba, Formosa, Jujuy, La Pampa, La Rioja, Mendoza, Neuquen, Rio Negro, Salta, San Juan, San Luis, Santiago del Estero, Tucuman; & Paraguay.

Elevation: 0 to 4,000 feet. Does best under 3,000 feet.

Hardiness:
USDA Zone 8b: to -9.4 �C (15 �F)
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)
USDA Zone 10b: to 1.7 �C (35 �F)
USDA Zone 11: above 4.5 �C (40 �F)

Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
7.9 to 8.5 (alkaline)

Sun Exposure:
Full Sun

Habitat: Dry, well-drained soils; drought tolerant.

Miscellaneous: Bark remains green, even with age. Beware of hybrids that do not retain green bark or have distinctive growth habit. Flowering Photos Taken May 10, 2006 At Peoria, Arizona.

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