Identifying Poison Ivy, Oak, and Sumac The first step in dealing with these plants is proper identification. Each plant has distinct characteristics that can help you recognize and avoid them.

Like poison ivy and poison sumac, poison oak releases an oil called urushiol when it sustains damage. Your skin absorbs this allergen when you touch the plant. You may be able to reduce symptoms ...

Poison sumac rash symptoms Poison sumac works the same way as poison ivy and poison oak — all three plants contain an oil called urushiol that causes an allergic reaction in most people.