Poison ivy, poison oak and poison sumac can make for an uncomfortable summer or fall. If you have ever experienced the blisters, swelling and intense itching of even the briefest of encounters, then ...

Poison ivy is one of the most frustrating plants homeowners encounter, and touching it can trigger an intensely itchy rash ...

Just the mention of the words “poison ivy” may have some of you itching already. The Johnson County Extension gardening hotline receives numerous requests for identification and control each summer.

If you were a Girl Scout or a Boy Scout, you probably heard the adage "leaves of three, let them be" to deter you from getting poison ivy rash. And, while it is true that a poison ivy leaf contains ...

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 ...

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 ...

QUESTION: What's the best way to get rid of poison ivy? I have it in two locations. The first is in low-growing ligustrums that border my yard, and the second is along my backyard fence. -- Dave Plank ...

I have to admit I have been remiss with respect to some topics. In most cases it was because I wrongly assumed some things were so widespread and common that any column of that type would simply be ...

Over a decade ago, when Peter Barron started removing poison ivy for a living, he decided to document his work. "Every year I always take pictures of the poison ivy as it's blooming," said Barron, who ...