Jordan Metzgar, curator of Virginia Tech’s Massey Herbarium, talks with Les Sinclair about the Giant Hogweed.  Virginia Tech researchers who helped identify the dangerous Giant Hogweed plants in Clarke County, Virginia, want residents to stay on the lookout for the plant with toxic sap that can cause severe burns — but also stressed that the weeds are believed to have been planted intentionally decades ago and haven’t spread in the years since.  More: https://vtnews.vt.edu/articles/2018/06/hogweed-media-advisory.html