The Wisconsin Gardener - New Weeds from the South
2013
https://video.pbswisconsin.org/video/wisconsin-gardener-new-weeds-south/
Wisconsin Public Television.
Climate change means new and stronger weeds. In this video, University of Wisconsin-Extension weed specialist Mark Renz shows how climate change will turn some of our existing weeds such as Canada thistle into super weeds. Plus, a look at some new weed threats from the south.