RHS 
Herbaceous Perennial
a clump-forming herbaceous perennial, 30-60cm high, with deciduous, seven-lobed, velvety leaves, 5-15cm across, which are dark green flushed with brown and which turn red and orange in autumn, and broadly funnel-shaped flowers, 3cm across, of dark bluish-purple with darker violet-purple veins, from early summer to late summer
Position
Full sun, Partial shade
Soil Types
Chalk, Clay, Loam, Sand
Max Height
0.5-1 metres
Max Spread
0.5-1 metres