Rhus radicans

Poison Ivy

Anacardiaceae

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Habitat

  • native to a wide portion of the United States and Canada
  • hardy to zone 4
  • Special Note: This species contains in all its parts a skin irritant that causes a severe reaction in many individuals. For more information, .

Habit and Form

  • a deciduous vine to short shrub
  • vine covered in aerial roots
  • generally found on tree trunks and any other structure
  • 50' tall
  • medium to coarse texture
  • fast growth rate

Summer Foliage

  • alternate leaf arrangement
  • variable leaf morphology
  • leaves are generally trifoliate
  • lush green leaf color
  • serrated leaf margins

Autumn Foliage

  • brilliant red fall color
  • very showy

Flowers

  • not ornamentally important

Fruit

  • white fruit found in clusters
  • poisonous
  • 0.25" in diameter
  • wildlife eat fruit

Bark

  • tan woody stems
  • aerial roots help attach vine to structure
  • vine tends to branch out at 90 degree angle from structure

Culture

  • easily transplanted
  • soil adaptable
  • suckers
  • full sun to partial shade

Landscape Use

  • massing
  • woods edge
  • naturalistic areas
  • bank covers

Liabilities

  • Verticillium Wilt
  • aphids, scales, rusts and mites
  • poisonous
  • do not burn

ID Features

  • trifoliate leaves
  • aerial roots
  • branches at 90 degrees

Propagation

  • by seed

Cultivars/Varieties

'Variegata' - Collectors of variegated plants cultivate several variegated clones of this plant with white or creamy leaf markings. They are maintained chiefly as conversation pieces ... proof that every plant is appreciated by somebody.

© Copyright Mark H. Brand, 1997-2015.

The digital materials (images and text) available from the UConn Plant Database are protected by copyright. Public use via the Internet for non-profit and educational purposes is permitted. Use of the materials for profit is prohibited.

Citation and Acknowledgements: University of Connecticut Plant Database, http://hort.uconn.edu/plants, Mark H. Brand, Department of Plant Science and Landscape Architecture, Storrs, CT 06269-4067 USA.