Would like to know how to care for my rose tree. I am not sure how to prepare it for winter. I live in western Montana.
In your area, winter temperatures can be severe enough to kill most tree roses. Unless you have a hardy type, such as Polar Joy, you'll likely either need to bury the rose or take it in to a protected location such as an unheated garage. Here is a link to the Minnesota Tip Method of protecting roses from the University of Minnesota Extension Service.