Upright stems with whorls of narrow leaves to 90cm. The clusters of narrow flowers appear in the leaf axils higher up the stems in late spring. Good, woodsy, soil in shade. Less attractive to sawfly.
Whorls of narrow leaves on slender stems to about 60cm. Smallish green bell-like flowers in late spring. The flowers and stems are often spotted reddish purple and the foliage has a purple flush when young. Late to emerge. Good, woodland soil in shade.
A distinctly taller form of this narrow leafed species making upright stems to as much as 2.1m in good soil in shade. Masses of tawny flowers from the higher leaf axils in early summer. Hardy.
