The farms in MI have the local thing going for them, and it is good to get a beer grown with local ingredients (there are some barley farms and small scale maltsters too). The agronomics for a small scale start up hop farm is daunting, especially when competing with farms in the west that get twice the yield.
Hops were commercially farmed in Michigan a long time ago, and the molds and mildews forced the crop out. One of the farms on the Lelanau has their own registered hop, Empire. The story was that it was found in the area and was left from original go round. The strain was thought to be from Finland - so the story goes. I got some from a local pro, and brewed a batch. It smelled similar to Cascades, but the pale ale brewed with it has a black pepper flavor. Might be good for a Belgian next time I use it.