The Midwest Forum is intended for information regarding areas where people have called themselves "the MidWest". This includes MN, WI, the Dakota's, WY, MT, IL, IN, IA, and so many states in "middle" America.
Plant sharing, and discussing garden experiences are open to everyone, and likely to be of interest to people in zone 4 through zone 6.
Gardeners gatherings, area events, etc. posted would likely be easy for people in these states to travel to without great expense and time commitments (but everyone is of course welcome to attend).