Often grown as an architectural plant for its shapely leaves, the dark blue flowerheads in summer will attract many butterflies and bees to your border, Height 100 cm. Spread 45 cm.
A plant of substance for the back of the border or along waterside! Prefers a moist condition, where it will show its flat, orange flowerheads in big clusters in summer. Height 100 cm. Spread 90 cm.