Colour: Purple [ X ] Flowering: Late Summer [ X ] Type: Hardy perennial [ X ]
0 to 30cm (1) 30cm to 60cm (2) 90cm to 1.2m (1) Over 1.2m (2)
Part-shade (5) Shade (2) Sun (5)
Drained (4) Dry (2) Moist (4) Normal (5)
Fast (1) Moderate (3) Slow (2)