Native Range: E. Asia - China, Japan, Mongolia, Russia (Siberia).
Hardiness Zone: USDA Zone 4a: to -34.4 °C
Soil: humus rich soils.
Moisture: Needs to be kept moist. Do not allow to fully dry out.
Light: grow in semi-shade (light woodland).
Flowering Period: August, September
Garden locations: Border, woodland gardens, native plant gardens. Nice in light shade under a tree
Price: 10 €