
Photo: Krzysztof Golik · CC BY-SA 4.0 · Wikimedia Commons
Bloom colours
violet-blue
What actually matters with this one
Prune in spring once new shoots show, never in autumn. Autumn cuts plus winter wet kill mature plants.
How to grow it
- Light
- full sun
- Water
- Keep it dry
- Hardiness
- Zones 4-8
- Height
- 60 cm
- Flowers
- June
- Difficulty
- easy
Where you will meet it
Plant it alongside
Relatives and plants that want the same conditions.



