An erect, clump forming, winter dormant, herbaceuos perennial. In spring produces willow like stems with fine, slim leaves that turn bright yellow, then mahogany brown in Autumn. Sprays of small, starry blue flowers in summer. Flowering period June and July. Height 75cm (approx). Spread 75cm (approx). Plant requires full sun to partial shade in well drained soil, this plant may be slow to establish but once is has is long lived.