General Plant Information (Edit)
Plant Habit: Shrub
Life cycle: Perennial
Sun Requirements: Full Sun to Partial Shade
Partial Shade to Full Shade
Water Preferences: Mesic
Dry Mesic
Minimum cold hardiness: Zone 4a -34.4 °C (-30 °F) to -31.7 °C (-25 °F)
Maximum recommended zone: Zone 10b
Plant Height: 1 to 3 feet (30-90 cm)
Plant Spread: 3 to 6 feet (.9-18 m)
Leaves: Deciduous
Fruit: Edible to birds
Uses: Will Naturalize
Toxicity: Leaves are poisonous
Roots are poisonous
Fruit is poisonous
Other: All parts of plant contain urushiol oil, a toxic oil
Propagation: Seeds: Self fertile
Pollinators: Bees

Common names
  • Poison Ivy
  • Eastern Poison Ivy
  • Three-Leaved Ivy
  • Marlweed
  • Mercury
Botanical names
  • Accepted: Toxicodendron radicans
  • Synonym: Rhus radicans

This plant is tagged in:
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  • Posted by Newyorkrita (North Shore, Long Island, NY ) on Sep 21, 2013 10:29 AM concerning plant:
    Leaves of three, leave it be. Poison Ivy is not a plant any of us want to see growing in our gardens. Birds seems to spread the seeds, so I do end up with some young poison ivy plants each summer. Be sure to yank them out while small.
  • Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Oct 27, 2018 7:17 PM concerning plant:
    Eastern Poison-Ivy is a common woody vine (liana) with a large range in eastern North America. It can be a groundcover vine, a low semi-bush, or it can be a climbing vine to 150 feet long up trees and structures. It climbs by aerial rootlets that form a hair-like mass along the stems, like Euonymus. It has alternate, compound leaves about 6 to 14 inches long of three leaflets. The foliage gets a fantastic red or orange fall color. From the tiny, inconspicuous flowers form small white fruits, rounded drupes about 1/5 inch in diameter that are eaten by birds and spread around a lot. All parts of the plant contain the irritant oil that causes red rashes on skin. One must immediately wash off that oil if exposed with soaps or Tecnu solution. I did not get hit by this plant every year and as much back in the Midwest versus the Mid-Atlantic Region. I have to watch out for small, young plants among the weeds or ornamental plants in my Pennsylvania yard, as my bird friends deposit the seeds each year. I usually get the rash on my forearms and the rash usually affects me for about 2 weeks.
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