Good to know that Ohio is one of the few states which regulate Heracleum mantegazzianum, a plant recognized as noxious by the U.S Government. http://www.dispatch.com/content/stories/science/2013/07/14/1-godzilla-of-weeds.html
Yes, nasty stuff, good to be aware of it. I remember a few years ago the local media reported that a couple received some quite nasty burns after indulging in a romantic liaison in a patch of giant hogweed in a local country park.
