Clump-forming perennial with deep purple stems that bears heads of pale lilac sepals and long, cream-yellow stamens. Flowers from June to August. Gorgeous blue-green foliage. Height 2.5m. It likes damp soil bordering on well-drained, in a dappled shady spot.
Available in a 3 litre pot. These have been cut back, so they won’t flower again until next year