Poison ivy, Rhus radicans or Toxicodendron radicans, is an undeniable plant menace in home landscapes. I’m allergic to its plant oils, as you may be. It’s the plant we all love to hate. Purdue experts ...

Up until recently, New Englanders had two notorious plants that cause high levels of skin rash and irritation. We are taught early to give wide berth to "leaves of three" in reference to poison ivy.

Poison ivy is a native plant that was recorded in 1784 by Philadelphia horticulturist John Bartram in his list of “220 American Trees, Shrubs and Herbs.” European plant collectors were eager to ...

Figure 1. Poison ivy (Rhus radicans) is a woody shrub or vine found throughout the United States. Red-tinged leaves grow in groups of three and have smooth, fine-toothed, or lobed margins, and small, ...

- climbing plant common in eastern and central United States with ternate leaves and greenish flowers followed by white berries; yields an irritating oil that causes a rash on contact ...

Christie's Sale Cat., Raleigh-6034, Nov. 5-6, 1985, Lot #286.