Color of flowers

• Blue (1)
• Red (2)
• White (3)
• Yellow (5)

Flowering period

• Summer (1)

Location

• Everywhere (1)
• Shadow (1)

Minimum temperature

• (1)
• -5 °C (10)
• -10 °C (4)
• -15 °C (9)
• -20 °C (4)
• 0 °C (51)
• 3 °C (2)
• 5 °C (11)

winter temperature

• 12 (±5)°C (1)
• 15 (+/- 5) °C (1)

Hardiness Zones

• 8 (1)
• 10 (1)