This vigorous perennial forms clump from rhizomes. It has softly hairy, mid- to dark green leaves and from late winter to mid-spring it produces blue flowers, occasionally flushed-pink, aging to purple-blue.
Generally not harvested.
Divide in autumn or immediately after flowering.
Partial Sun, Full Shade
Clay, Chalk, Loam
Soil PH preference
Alkaline, Neutral, Acid
A useful plant for under planting deciduous shrubs in wildlife gardens but it also suits beds/borders of cottage/informal gardens as ground cover.