The ilex or holly, and the ivy, both evergreen plants are traditional Christmas symbols: the holly for part of the same reason as the Glastonbury Rose is, because it represents the Crown of Thorns ...

It’s not just poison ivy leaves that harbor urushiol. Stems, roots, and even smoke from burning poison ivy can cause a reaction, at any time of year, Keegan said.

Most of us have heard the old saying, likely from adults trying to protect us when we were young and inexperienced: “Leaves of three, let it be.” But is that truly an accurate way to id… ...

Poison ivy has a characteristic compound leaf consisting of three leaflets (so the saying, "Leaves of three, let it be"). The leaflets are 2 to 4 inches long and dull or glossy green with pointed ...

All parts of a poison ivy plant – leaves, stems, roots, fruits – contain an oil called urushiol, which causes an allergic reaction and rash.