A clump-forming perennial to 60cm with dark green, willow-like leaves and open clusters of star-shaped, pale blue flowers from late spring to midsummer
Mature Height
1m
Mature Spread
0.5m
Plant Characteristics
Foliage
Deciduous
Growth Habit
Clumping
Growth Speed
Moderate · 0.3 m/yr
Soil Texture
ChalkClayLoamSand
Soil pH
AcidAlkalineNeutral
Soil Moisture
Moist but well-drained
Hardiness (RHS)
H7
Hardiness (USDA)
Zones 4-9
Flowering Season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Key Features
Drought resistantGenerally pest-freeCottage and informal gardenPrairie plantingFlower borders and beds