Selected as the 2008 Perennial Plant of the Year. Geranium 'Rozanne' is one of the best recent Cranesbill introduction, excellent for long-season display and leagues better than older garden forms such as ‘Johnson’s Blue'. It forms a midsized mound of deeply-cut green leaves, bearing loose clusters of bright violet-purple cup-shaped flowers starting in early summer. Performs well towards the front of a border, also excellent for massing or in mixed containers. Often gives good bronzy fall colour.