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Marcus, Joseph A.
Toxicodendron radicans (L.) Kuntze
Eastern poison ivy, Poison ivy, Poison oak
USDA Symbol: tora2
USDA Native Status: L48 (N), CAN (N)
Upright, climbing, or trailing shrub that bears small yellowish-white flower clusters; old stems, covered with fibrous roots, look hairy. Poison Ivy is extremely variable in form, occurring as a ground cover along roadsides, an erect shrub (especially in sandy coastal areas), or a large vine on trees. Red fall foliage is especially conspicuous.
Bloom InformationBloom Color: White , Green , Brown
Bloom Time: Apr , May , Jun
, WV Canada: AB
, QC Native Distribution:
Throughout the East; Ontario east to Nova Scotia, south to Florida, west to Texas, and north to South Dakota and Minnesota. Native Habitat:
Dry to Moist areas
Woodland to Streambed
Growing ConditionsLight Requirement: Part Shade , Shade
Conditions Comments: Beautiful Orange to Deep Red Fall Color
POISONOUS PARTS: All parts, in all seasons if plant sap
contacted. Severe skin irritation upon contact. Symptoms include severe skin redness, itching, swelling, and blisters following direct or indirect contact. Toxic Principle: Urushiol. Interesting Foliage:
Butterflies Deer Resistant:
Mr. Smarty Plants says
Removal of bramble under live oaks and replacing with groundcover
September 26, 2007
We have several large live oaks on the front of our 12 acre property in Hockley, Texas. Under and around each oak is an extensive amount of bramble which we would like to remove so that we can enjoy ...
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National Wetland Indicator Status
This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1
(Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here
for map of regions.
Herbarium Specimen(s)NPSOT 0320
Collected May 22, 1987 in Bexar County by Harry Cliffe
Record Last Modified: 2007-01-01
Research By: NPC