Toxicodendron radicans (L.) Kuntze
Eastern poison ivy, Poison ivy, Poison oak
Anacardiaceae (Sumac Family)
USDA Symbol: TORA2
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.
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Habit: Shrub , Vine
Leaf Retention: Deciduous
Leaf Arrangement: Alternate
Leaf Complexity: Trifoliate
Leaf Shape: Ovate
Leaf Margin: Dentate
Breeding System: Flowers Unisexual , Monoecious
Size Notes: 6 to 18 inches on forest floor, climbing vine, or bush.
Autumn Foliage: yes
Fruit: Amber 1/4 inch diameter.
Bloom InformationBloom Color: White , Green , Brown
Bloom Time: Apr , May , Jun
DistributionUSA: AL , AR , AZ , CT , DC , DE , FL , GA , IA , IL , IN , KS , KY , LA , MA , MD , ME , MI , MN , MO , MS , NC , NE , NH , NJ , NY , OH , OK , PA , RI , SC , SD , TN , TX , VA , VT , WI , WV
Canada: AB , NB , NS , ON , PE , 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
BenefitWarning: 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: yes
Deer Resistant: High
Find Seed or Plants
Find seed sources for this species at the Native Seed Network.
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 ...
view the full question and answer
National Wetland Indicator Status
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Lady Bird Johnson Wildflower Center - Austin, TX
Brackenridge Field Laboratory - Austin, TX
Crosby Arboretum - Picayune, MS
Nueces River Authority - Uvalde, TX
Texas Master Naturalists - Lost Pines Chapter - Bastrop, TX
Native Seed Network - Corvallis, OR
Jacob's Well Natural Area - Wimberley, TX
Herbarium Specimen(s)NPSOT 0320 Collected May 22, 1987 in Bexar County by Harry Cliffe
BibliographyBibref 354 - Native & Naturalized Woody Plants of Austin & the Hill Country (1981) Lynch, D.
Bibref 663 - Poisonous Plants of North Carolina (1994) Vondracek, W. ; L. Van Asch
Search More Titles in Bibliography
From the ArchiveWildflower Newsletter 1985 VOL. 2, NO.3 - Greenhouse Assists Research, Wild color on the Hills, Director's Report, Clearin...
Additional resourcesUSDA: Find Toxicodendron radicans in USDA Plants
FNA: Find Toxicodendron radicans in the Flora of North America (if available)
Google: Search Google for Toxicodendron radicans
MetadataRecord Modified: 2007-01-01
Research By: NPC