North America is home to several subspecies of poison ivy, but the two main types are eastern and western poison ivy. Eastern poison ivy grows as a vine, and western poison ivy grows more like a ...

Western poison ivy grows like a low shrub or a bush ... Poison oak also has two different types commonly found in the United States: Pacific poison oak and Atlantic poison oak.

A poison ivy rash will last at least a week and likely more if you've never been exposed before. If you come into contact with poison ivy, the rash will typically appear within 12-48 hours.