These are tuberous, rhizomatous or fibrous-rooted perennials and semi-evergreen sub-shrubs. The leaves are divided into heart-shaped leaflets. The funnel-shaped flowers are pink, white or yellow; they are carried in an umbel-like cluster on slender stalks. They are fully hardy to frost tender, min 5C, and will need full sun or semi-shade with well drained soil. You can propagate by division in the autumn or early spring.