Erect perennial herb to 1.2 m tall, glabrous or slightly hairy above. Stems muchbranched. Leaves along stems, to 15 cm long, sparsely toothed, base stem-clasping, glabrous. Capitula about 5 cm across, in dense panicles; summer to autumn. Ray florets violet-blue. Disk florets yellow.

N America

Widely cultivated as an ornamental and available as a wide range of cultivars.

Source: Jeanes, J. (2002). Asteraceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.