20 seeds per packet. A tall, clump-forming perennial that is native to Europe and Asia. Attractive, glaucous, fern-like foliage and purple, erect stems carrying fluffy clouds of pinky-purple flowers are produced in summer, followed by clusters of pendulous, wing-like seeds. Height 1.2 metres. Full sun to part shade in a moist, humus rich, well-drained soil. Cold germinator.