RHS 
Herbaceous Perennial
A herbaceous perennial, 20cm high, spreading by rhizomes, with semi-evergreen, aromatic, lobed green leaves, which turn orange and red in autumn, and flowers 2.5cm across with petals which appear almost white but are very pale pink with darker pink veins, and dark pink anthers and stigmas, from late spring to early summer
Position
Full shade, Full sun, Partial shade
Soil Types
Chalk, Clay, Loam, Sand
Max Height
0.1-0.5 metres
Max Spread
0.1-0.5 metres