RHS Herbaceous Perennial
A clump-forming perennial to 90cm tall, with sticky, ovate, mid-green leaves to 20cm long, and pale yellow flowers marked with brown, in loose spikes in summer and early autumn
Position
Full sun, Partial shade
Soil Types
Chalk, Loam, Sand
Max Height
0.5-1 metres
Max Spread
0.1-0.5 metres