Poison oak is similar in appearance to poison ivy but is usually found as a shrub rather than a vine. It can have clusters of three, five, or seven leaves, which resemble oak leaves—hence the name.

Learn how to identify poison ivy, oak, and sumac plants and the rashes ... Leaves grow on a fuzzy vine along the ground or up tree trunks. This variety grows prolifically in the eastern regions ...

In shady areas, it can grow like a climbing vine. The leaves typically ... depending on the time of year. Like poison ivy and poison sumac, poison oak releases an oil called urushiol when it ...

When you’re spending time outdoors this summer, in your own yard or hiking in a park, it’s useful to know to spot poison ivy.