Plant Rozanne Cranesbill Geranium in well-drained soil with full sun to partial shade. Space plants about 18-24 inches apart. Water regularly, especially during dry spells, to keep the soil consistently moist but not waterlogged. Fertilize in spring with a balanced, slow-release fertilizer. Deadhead spent flowers to encourage continuous blooming. Prune back in late fall or early spring to maintain shape and promote vigorous growth.