Parkinsonia Cercidium aculeata Parkinsonia aculeata (Retama) #4281  parkinsonia image
Mexican Palo Verde Bark Parkinsonia aculeata - Twig - Mexican paloverde Mexican palo verde- picture from ag.arizona.edu/.../Parkinsonia_aculeata 
Common Name Mexican palo verde, Jerusalem thorn
Latin Name Parkinnsonia aculeata, previously Cercidium aculeata
Family Fabaceae
Sunset zone / USDA zone 8-29 / 8-11
Type / Form Tree / Medium
Native Habitat Mexico
Soil Dry to moist, decomposed granite, sand, clay loam, low organic content
Exposure Full sun or filtered shade, plant south of wind break or building to protect from cold Santa Ana winds
Water Once per month in clay soil to once a week in sand during hot months
Height X Width / Growth rate Maximum 15 feet X 25 feet, usual 12 feet X 15 feet / Moderate
Protective Mechanism Spines
Leaves Drought and cold deciduous, temporary bi-pinnate, green
Flowers 5 petaled yellow flowers with red or brown pistils bloom two weeks in April, May, or June, fragrant, cold marginal
Bark / Roots Barks scarred and grey brown / Deep roots
Maintenance Messy, emits considerable litter but needs it to store ground water, do not prune at above 70 degrees
Propagation Seed
Pests and Diseases Wood borers, witches broom, and mistletoe
Landscape Uses Erosion control, rock garden, low maintenance, background, specimen
Garden Suitability Fragrant, Songbird, Ethnobotanical
Nature Value Flowers attract bees and butterflies, seeds eaten by birds and other wildlife
Native American Uses Beans ground into pinole, drink made from pods with beans
Comments Short lived 20 to 40 years
Links  
    Images and data http://www.delange.org/PaloVerdeMexican/PaloVerdeMexican.htm
    Images and data http://desertwaterwisegardens.suite101.com/article.cfm/mexican_palo_verde_tree
    Images and data http://ag.arizona.edu/pima/gardening/aridplants/Parkinsonia_aculeata.html
    Images and data http://www.fireflyforest.com/flowers/1833/parkinsonia-aculeata-jerusalem-thorn/
    Images and data http://www.cas.vanderbilt.edu/bioimages/species/paac3.htm
    Images and data http://www.floridata.com/ref/p/park_acu.cfm
    Images and data http://www.arizonensis.org/sonoran/fieldguide/plantae/parkinsonia_aculeata.html
    Images and data http://www.desert-tropicals.com/Plants/Fabaceae/Parkinsonia_aculeata.html
    Images and data http://www.backyardgardener.com/plantname/pda_05e9.html
    Images and data http://tucsoncitizen.com/wryheat/2010/04/12/palo-verde-trees-will-turn-the-desert-golden/ 
    Images and data http://www.desertmuseumdigitallibrary.org/public/detail.php?id=ASDM08478&sp=Parkinsonia%20aculeata 
    Images and data http://en.wikipedia.org/wiki/Parkinsonia_aculeata 
    Images and data http://www.fs.fed.us/r3/tonto/naturalResources/Invasive-Weeds/weeds/iw_mexican_palo_verde.shtml 
    Images and data http://www.anniesannuals.com/signs/p%20-%20r/parkinsonia_aculeata.htm 
    Images and data http://davesgarden.com/guides/pf/go/97539/ 
    Images and data http://www.wildflower.org/plants/result.php?id_plant=paac3 
    Images and data http://www.californiagardens.com/Plant_Pages/parkinsonia_aculeata.htm 
    Nursery, images, and data http://www.smgrowers.com/products/plants/plantdisplay.asp?plant_id=1195 
    Nursery
Oak Hills Nursery, 13874 Ranchero Road, Oak Hills, 92345, 760-947-6261
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