'Rozanne' has become one of the very best hardy geraniums for perennial gardens. The flowers are 2.5" wide and a striking shade of violet blue with white centers. Starts blooming in late June and repeats blooming into autumn. Grows into a nice spreading mound, reaching a mature spread of 2-3'. Foliage will become a red-brown in autumn. PPA Plant of the Year for 2008. Needs winter protection in zone 4.