Arid Zone Trees

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Tree Hardiness

The following information supersedes hardiness temperatures shown on AZTimes articles prior to this update of October 15, 2001.

Tree hardiness shown is the best information that we currently have, however genetic variation, location, soil moisture, tree maturity and duration of cold could cause damage at or even above the temperatures shown below. 

USDA Plant Hardiness Map 2002 
 

Botanical Name Common Name Fahrenheit Celsius
Acacia abyssinica Ethiopian Acacia 15 -9.4
Acacia aneura Mulga 15 -9.4
Acacia aroma Tusca 20 -6.7
Acacia berlandieri Guajillo 15 -9.4
Acacia brachystachya Umbrella or Turpentine Mulga 15 -9.4
Acacia brachybotrya Gray Mulga 20 -6.7
Acacia caven Espino Caven 10 -12.2
Acacia constricta Whitethorn Acacia 15 -9.4
Acacia coriacea Desert Oak 20 -6.7
Acacia cowleana Halls Creek Wattle 20 -6.7
Acacia craspedocarpa Leather Leaf Acacia 15 -9.4
Acacia cyclops Western Coastal Wattle 20 -6.7
Acacia dictyophleba   20 -6.7
Acacia eburnea Arabian Acacia 7 -13.9
Acacia erioloba Giraffe Thorn, Camel Thorn 15 -9.4
Acacia estrophiolata Ironwood 20 -6.7
Acacia gerrardii Grey-haired Acacia 15 -9.4
Acacia greggii Catclaw Acacia 0 -17.8
Acacia jennerae Coonavittra Wattle 15 -9.4
Acacia karroo Karroo Thorn, Sweet Thorn 20 -6.7
Acacia ligulata Small Cooba 15 -9.4
Acacia lysiphloia Dune Wattle, Turpentine Wattle 20 -6.7
Acacia microbotrya Gum Wattle 20 -6.7
Acacia microaneura Narrow Leaf Mulga 15 -9.4
Acacia neovernicosa Chihuahuan White Thorn 10 -12.2
Acacia nebrownii Water Acacia 15 -9.4
Acacia notabilis Notable Wattle 15 -9.4
Acacia occidentalis Sonoran Tree Catclaw 15 -9.4
Acacia papyrocarpa Western Myall 20 -6.7
Acacia pendula Weeping Myall 15 -9.4
Acacia pruinocarpa Black Gidgee 20 -6.7
Acacia retinoides Swamp Wattle, Silver Wattle 25 -3.9
Acacia rigidula Blackbrush Acacia 15 -9.4
Acacia rivalis Silver Wattle 15 -9.4
Acacia roemeriana Roemer Acacia 20 -6.7
Acacia schaffneri Schaffner or Twisted Acacia 15 -9.4
Acacia smallii (A. minuta) Sweet Acacia 15 -9.4
Acacia stenophylla Shoestring Acacia 20 -6.7
Acacia tetragonophylla Dead Finish 20 -6.7
Acacia trachycarpa Sweet-Scented Minnieritchie 25 -3.9
Acacia trineura Three-nerved wattle 15 -9.4
Acacia victoriae Bramble Wattle 15 -9.4
Acacia willardiana Palo Blanco 25 -3.9
Acacia xanthophloea Fever Tree 25 -3.9
Bauhinia lunarioides Anacacho Orchid Tree 15 -9.4
Caesalpinia cacalaco Cascalote 20 -6.7
Caesalpinia gilliesii Desert Bird of Paradise 10 -12.2
Caesalpinia mexicana Mexican Bird of Paradise 20 -6.7
Caesalpinia palmeri Bird of Paradise, Piojo 20 -6.7
Caesalpinia pulcherrima Red Bird of Paradise 30 -1.1
Cercidium floridum Blue Palo Verde 10 -12.2
Cercidium hybrid 'AZT' 'AZT' Thornless Palo Verde 20 -6.7
Cercidium hybrid (Desert Museum) Desert Museum 20 -6.7
Cercidium microphyllum Foothill Palo Verde 15 -9.4
Celtis pallida Desert Hackberry 10 -12.2
Cercidium praecox Sonoran Palo Verde, Palo Brea 20 -6.7
Cercidium praecox 'AZT' 'AZT' Sonoran Palo Verde 20 -6.7
Celtis reticulata Canyon Hackberry -20 -28.9
Chilopsis linearis Desert Willow 10 -12.2
Chilopsis linearis 'AZT Bi-Color' Desert Willow 'AZT Bi-Color' 10 -12.2
Chilopsis linearis 'AZT Desert Amethyst' Desert Willow 'AZT Desert Amethyst' 10 -12.2
Condalia hookeri Brasil 15 -9.4
Cupressus arizonica Arizona Cyprus 0 -17.8
Dodonaea angustifolia Hopbush 20 -6.7
Eysenhardtia orthocarpa Kidneywood 15 -9.4
Eysenhardtia texana Texas Kidneywood 15 -9.4
Faidherbia albida Apple-ring acacia, Ana Tree 25 -3.9
Geoffroea decorticans Chilean Palo Verde 15 -9.4
Guaiacum coulteri Guayacan 25 -3.9
Haematoxylum brasiletto Brazilwood 20 -6.7
Lysiloma microphyllum Mauto 25 -3.9
Olneya tesota Ironwood 20 -6.7
Olneya tesota 'AZT' 'AZT' Ironwood 20 -6.7
Pithecellobium flexicaule Texas Ebony 15 -9.4
Pithecellobium mexicanum Mexican Ebony 15 -9.4
Pithecellobium pallens Tenaza 15 -9.4
Prosopis alba Argentine Mesquite 20 -6.7
Prosopis chilensis Chilean Mesquite 15 -9.4
Prosopis hybrid 'AZT' 'AZT' Thornless Hybrid Mesquite 15 -9.4
Prosopis flexuosa Algarrobo Negro 10 -12.2
Prosopis glandulosa Honey Mesquite -10 -23.3
Prosopis glandulosa 'AZT' 'AZT' Thornless Honey Mesquite 0 -17.8
Prosopis juliflora Native Mesquite 0 -17.8
Prosopis pubescens Screwbean Mesquite 0 -17.8
Prosopis velutina Velvet Mesquite 5 -15.0
Psorothamnus spinosus Desert Smoke Tree 15 -9.4
Rhus choriophylla Evergreen Sumac 10 -12.2
Rhus kearneyi Kearny's Sumac 20 -6.7
Sambucus mexicana Mexican Elderberry 0 -17.8
Sophora secundiflora Texas Mountain Laurel 0 -17.8
S. secundiflora 'Silver Peso' Texas Mountain Laurel 0 -17.8
Tecoma garrocha Hieron 15 -9.4
Vauquelinia californica Arizona Rosewood 0 -17.8