There are multiple subspecies of poison ivy in North America, but all have leaf groups of three and can be green or have a reddish tint.

Gardeners and hikers beware: Poison ivy may look like an unassuming plant, but it's one you're going to want to be able to identify before you wind up with an uncomfortable rash. If you do come home ...

Eastern poison ivy is often seen growing on buildings, trees or in fence rows as a vine, but western poison ivy grows as a small shrub or “ground cover” in the woods or in waste areas. As a vine it ...