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5 year old buck +
Do deer bed in GM or use it mainly for screening?
I don't personally have any MG or switch, but I've read a lot about both while planning for my own plantings.
MG doesn't seem to be well suited for bedding. It's an excellent screen, but for bedding you are better off with switch, just don't plant it so obscenely thick like Sturgis recommends.
If you prefer a rhizome-forming grass with a bunching growth habit, you can use a shorter variety of pampas grass that the deer can see over the top of, and jump over if necessary. This gives them a screen to bed up against which is low enough that they can still see over the top and smell wind coming over the top.
I will end up using switch, but im considering pampas grass as well, so long as I can be reasonably sure it won't spread and become a nuisance invasive.