Spotting and Avoiding Poison Oak, Poison Ivy, and Poison Sumac
By Will Glessner
Updated September 07, 2013
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Oak, Ivy, Sumac - Oh My!
Though winters are harsh in parts of the country, conditions are never severe enough to quell these three woodsy nuisances. Here’s how to recognize, avoid and treat contact with Toxicodendron Diversiloba (Poison Oak), T. Radicans (Poison Ivy) and T. Vernix (Poison Sumac).
Photos of Poison Oak, Ivy and Sumac