Native Range: Unusual variety
Hardiness Zone: USDA Zone 4a: to -34.4 °C
Soil: Fertile, humusy soils. Tolerate clay soil, wet soil
Moisture: Prefers moist, which do not dry out.
Light: Full sun to part shade
Flowering Period: July - August
Garden locations: native plant gardens, wild/naturalized areas or water margins.
Price: 3 €