Clump-forming perennial that features violet-blue flowers in late spring through early summer and occasionally into fall. Prefers full sun to part shade and well-drained soils with medium moisture. Plants can reach a height of up to 1.5 feet with a spread of up to 2 feet. "Rozanne" is more heat tolerant than other perennial geranium varieties and often will bloom continuously through the growing season. Pollinator friendly.