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.

Skin irritation, redness, itching—you know the signs. If you’ve been out in the garden recently and have come away with a nasty rash, you may have gotten yourself into a patch of poison ivy. Poison ...

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 ...

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, 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 ...

If you spot poison ivy in your yard, you only need to head to the kitchen to find a solution that can kill it. Read these ...

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 ...

Can you give me some advice on poison ivy control — I’m very allergic. I know what it looks like. I need to get some information on how to get rid of it. — Jack Anyone cleaning out overgrown areas or ...

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 ...

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 ...