A dwarf cultivar with a height and spread of 60cm. It is a short-lived perennial with rough stems and leaves, and dense clusters of small, purple flowers in summer and autumn; these are a good nectar source for pollinating insects
0.5-1 metres
0.5-1 metres
| Season | Stem | Flower | Foliage | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
Grow in moist but well-drained or well-drained, moderately fertile soil in full sun. In cold areas, protect with a dry winter mulch. May have the potential to become a nuisance due to prolific self-seeding in not well managed
Propagate by softwood cuttings or let it self-seed (seeds may not come true to type)
Cut down in spring as new growth emerges from the base; deadhead after flowering if seed is not required
May be susceptible to Powdery mildews