Just underplanted my roses with geranium Rozanne -- very happy there, and her blue is a lovely mediating influence, softening the juxtaposition of some of my more unfortunate cheek-by-jowl rose color choices. (Never mind.) I know what to do for my roses in winter; is there anything special I should do for Rozanne? Should I cut her back for the winter, or will she just die back when it gets cold and reappear in the spring? And how does she feel about mulch?