Herbaceous Perennial
An upright, clump-forming perennial to around 1.8m tall with purple stems clothed in whorls of dark green, lance-shaped leaves with toothed margins. Terminal heads of tiny light purple to pink flowers are borne from midsummer into early autumn
Position
Full sun, Partial shade
Soil Types
Chalk, Clay, Loam, Sand
Max Height
1.5-2.5 metres
Max Spread
0.5-1 metres