A herbaceous perennial grown mainly for the foliage effect, it does however have attractive flowers. Foliage emerges in early spring from swollen roots. They unfurl and at this point the foliage is at its best. Colour is a mid to deep green and a conspicuous wavy edge is present to the leaf. Flowers are borne in mid summer on rigid stems, each stems carries numerous flowers of a tubular shape. Colour is lavender-purple and these are followed by green seed pods. Medium sized.