Common Name: Poison Ivy
Scientific Name: Toxicodendron radicans (L.) Kuntze and T. rydbergii (Small) Green
Must be eradicated or controlled for public safety along rights-of-ways, trails, public accesses, business properties open to the public or on parts of lands where public access for business or commerce is granted. Must also be eradicated or controlled along property borders when requested by adjoining landowners. Minnesota Noxious Weed Law.
Poison ivy is native to Minnesota. Its range extends from Canada to South America.
Poison ivy prefers woodland and savanna habitats. It can also be found along fence rows, right-of-way (especially bordering wooded or shrub habitats), stream banks, pasture edges, and a variety of other non-cultivated habitats.
This plant spreads primarily by shoots arising from an extensive shallow, horizontal root system and aboveground vining. New populations are started by transportation of seeds primarily by wind, water, or animals. It is prevalent throughout Minnesota. View poison ivy distribution in Minnesota.
Poison ivy is a native species and beneficial to the landscape. Its berries serve as a food source for many wildlife species. Exposure to the toxic compound urushiol in the plant can cause severe blisters, rashes, and swelling on human skin and occasionally livestock. Poison ivy should not be allowed to contaminate hay baled for cows and horses.
Roots, leaves and stems contain an oily resin called urushiol which typically causes an irritating rash, blisters, or swelling when exposed to human skin, and occasionally on livestock. Burning poison ivy is very dangerous, as the smoke can contain urushiol and cause serious respiratory or other systemic health problems if inhaled.
MDA Noxious Weed Program
County Ag Inspectors