Unlike many other groundcovers, the stems don't root at nodes. And as I mentioned earlier, 'Rozanne' doesn't send out spreading rhizomes or reseed. The plant will die back to the ground in winter and start growing in spring from a small clump, but those stems sure grow long by the end of the season!
How do I winterize my Geranium Rozanne?
Rozanne doesn't need a lot of fuss during the winter months. Simply give her a good layer of mulch in late autumn and let her hibernate for the winter. The mulch will protect her from the frosts.
Do you cut back Rozanne geraniums in the fall?
Cut stems to as short as three inches to encourage branched growth and subsequent shorter stems. For garden clean-up, cut stems in late fall after frost or in early spring before new growth begins. Rozanne geranium pairs well with roses, where its wandering ways can hide knobby-kneed canes.