Color of flowers

• Blue (1)
• White (3)
• Yellow (1)

Flowering period

• Summer (5)

Location

• Everywhere (2)
• Full sun (1)
• Sunny (6)
• Sun or shadow (1)

Growth

• Climber (19)
• Palm (17)
• Perennial (10)
• Shrub (37)
• Small shrub (28)
• Tree (70)
• Tree or shrub (32)

Minimum temperature

• -5 °C (2)
• -10 °C (2)
• -20 °C (5)
• -25 °C (1)

winter temperature

• 5 (+/- 5) °C (1)
• 8 (±5)°C (2)
• 10 (±10)°C (1)
• Hardy (6)

Hardiness Zones

• 6 (5)
• 7 (2)
• 8 (1)
• 9 (2)