Weather May Be Culprit For Poison Ivy, Oak & Sumac Boom

A Twin Cities dermatologist says weather is to blame for this year's crop of poison ivy, which has sent more people to her office this summer than ever before. WCCO's Susan-Elizabeth Littlefield found out some things you may not know about the plants and why for some people - it may not be a problem at all (2:15).            <br><br><em>WCCO 4 News At 10 – Sept.6, 2013  </em>