Recognizing Poison Ivy, Oak and Sumac

The old saying goes: "Leaves of three, let them be." Poison ivy, oak and sumac are three plants that carry the same poison — urushiol, a colorless, odorless oil that causes an itchy, irritating rash in almost everyone who comes in contact with it.

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Dignity Health, *

Recognizing Poison Ivy, Oak, & Sumac

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