Native Range: Europe to Asia
Hardiness Zone: USDA Zone 3a: to -39.9 °C
Soil: Almost any soil (that is not too dry), cool, fertile. Well-drained.
Moisture: Moist to average
Light: Semi-shade (light woodland) or no shade
Flowering Period: June - July
Garden locations: Border, woodland gardens, native plant gardens. Nice in light shade under a tree. Poisonous.
Price: 4 €