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Toxicodendron rydbergii (Small ex Rydb.) Greene
Western poison ivy
USDA Symbol: TORY
USDA Native Status: Native to U.S.
Western Poison Ivy is a member of the cashew family (family Anacardiaceae) which includes trees, shrubs, and few woody vines with resinous sap often in bark and other parts; in a few species the resin or volatile oil is caustic and poisonous to the skin.
Plant CharacteristicsDuration: Perennial Habit: Shrub Autumn Foliage:
Bloom InformationBloom Color: White , Yellow
AZ , CO , CT , DE , IA , ID , IL , IN , KS , MA , MD , ME , MI , MN , MT , NC , ND , NE , NH , NM , NV , NY , OH , OK , OR , PA , RI , SD , TX , UT , VA , VT , WA , WI , WV , WY Canada: AB
, YT USDA Native Status: L48(N), CAN(N)
Growing ConditionsLight Requirement: Sun , Part Shade , Shade
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Record Modified: 2007-01-01
Research By: TWC Staff