RHS Herbaceous Perennial
A rhizomatous perennial forming a clump of scented leaves, the basal ones simple, those on the stems pinnate, all opening yellow in spring, becoming yellowish-green by summer; sprays of small white flowers open in early summer
Position
Full sun, Partial shade
Soil Types
Chalk, Clay, Loam, Sand
Max Height
1-1.5 metres
Max Spread
0.1-0.5 metres