A poison ivy plant appears at Lancaster County Park, in Lancaster, Pa. Botanically known as Toxicodendron radicans, poison ivy contains oily chemical compounds called urushiols in its leaves, stems ...

Learn how to identify poison ivy, oak, and sumac plants and the rashes they cause. Although poison ivy isn't the only plant with leaves that grow in clusters of three, the adage "leaves of three, ...

For all the time I spend digging, planting, pulling and weeding, one would think I’d have some poison ivy horror stories to tell, but I do not. I can’t say for sure whether I’m immune to the rash that ...

For all the time I spend digging, planting, pulling and weeding, one would think I’d have some poison ivy horror stories to tell, but I do not. I can’t say for sure whether I’m immune to the rash that ...

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 ...