USDA zone

•  2 (-45 °C) (22)
•  3 (-39 °C) (36)
•  4A (-35°C) (29)
•  4B (-32 °C) (2)
•  6A (-23 °C) (1)

Light

• (no filter) 

  semi-shade (1) sunny (1)

Soil

• (no filter) 

  Loam (1) Sand (1)

Flower colour

•  blue (1)
•  lavender (1)

Planting place

•  kiliminis (1)
•  Lysvė (1)
•  palei sieną (1)

Pruning

•  after flowering (5)
•  fall and winter (1)
•  only when necessary (3)
•  spring (3)

Availability

•  Not available (1)