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 ...

There are two common types of leaf diseases on English ivy found in Illinois. One is caused by fungi and the other is caused by a bacterium. Both diseases can cause defoliation if severe, but your ivy ...

A few years ago I was leading a group of Merrimack College ecology students on a nature walk, when one of them pointed to a vine with five leaflets per leaf, and asked if it was poison ivy. “No,” I ...

Poison ivy has leaves in groups of three, a green or reddish tint, and a hairy vine. A poison ivy rash looks like small, red bumps that can sometimes progress into blisters. To avoid poison ivy, wear ...

Add Yahoo as a preferred source to see more of our stories on Google. Poison ivy will turn crimson during the fall season. So, enjoy the vibrant display, but avoid the urge to touch. Some people are ...

RICHMOND, Va. (WRIC) — 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 ...

Mason Heberling, associate curator of botany at the Carnegie Museum of Natural History, holds a poison ivy specimen collected in Lehigh County, Pa. in 1840, the oldest used in the study. A new study ...