A clump-forming, deciduous perennial up to 1m tall with heart-shaped to oblong, scallop-edged, rough leaves. Flowers in shades of blue, purple, pink or white are carried tightly along upright, branching spikes in clusters of up to six flowers from summer into autumn
Position
Soil Types
Max Height
0.5-1 metres
Max Spread
0.1-0.5 metres