Good luck for peaches in winter
I have Red Heaven peach tree and it has dropped it leafs now. Actually it has dropped leafs sometime ago. Now it looks to be ready for winter. I think snow can be good protection in winter. I put net around it so rabbit wouldn't bite it. Situation looks better now than my last peach tree which had problems dropping leafs. Based on 2008-2012 temperature data i am in zone 5, but zone 6 looks nicer. Hopefully my peach survive winter. Good luck for peaches in winter, who grows them so they can surivive winter.