Clump forming with an upright bushy habit. Lovely mossy green leaves with a faint chevron and narrow tapers of tiny white flowers in mid-late autumn. Hardy, deciduous and best in shade. 90cm.
A long lived, clump forming species with narrow triangular leaves and strong, upright, branching stems bearing whorls of light purple flowers in summer followed by good seedheads. Drained soil in sun. 1.5m.