Researchers want to know why poison ivy grows in so many different ways, said David Haak, a Tech assistant professor of plant pathology, physiology and weed science. Folks hiking through the forest ...

Q: I’m not sure if the plants growing in my yard are poison ivy or something else. What does poison ivy look like, and how can I safely identify it? A: Even a brief brush with poison ivy can cause an ...

Poison ivy, oak, and sumac contain an oil called urushiol that causes an allergic skin rash. These plants can be identified by their leaf structure, though some non-toxic plants look similar. To avoid ...