The DNR site has an article about garlic mustard, a non-native plant which is growing out-of-control and choking out the native plants in Wisconsin. Apparantly it is now flowering and easy to spot, and the DNR is encouraging people to pull it from the ground and dispose of it if you find any.
This might be a good thing for us to keep an eye out for while we’re out in the woods. If you’ve never seen it before, there are pictures at the site.
Maybe if someone lives near an area that is infested, they could set up a “garlic mustard cache” and encourage people to yank up the weeds as they search for it.