that were formerly included within the genus Aster. Leaves are simple, lance-shaped and entire, but it is their daisy-like flowerheads that they are grown for; central disc florets are typically ...

A clump-forming perennial, up to 1.5m high, with upright, branching stems and oval to heart-shaped green leaves. Clusters of small daisy-like flowers, in pale violet, blue or occasionally white, are ...