A rosette-forming perennial with narrow, evergreen basal leaves. Loose spires of outward-facing, cup-shaped, lilac-blue flowers appear in early and mid-summer
Position
Soil Types
Max Height
0.5-1 metres
Max Spread
0.1-0.5 metres
A rosette-forming perennial with narrow, evergreen basal leaves. Loose spires of outward-facing, cup-shaped, lilac-blue flowers appear in early and mid-summer
0.5-1 metres
0.1-0.5 metres
This plant will provide the maximum benefits if it is healthy and allowed to grow to maturity
| Season | Stem | Flower | Foliage | Fruit |
|---|---|---|---|---|
| Spring | ||||
| Summer | ||||
| Autumn | ||||
| Winter |
Best grown in fertile, neutral to alkaline soil that is moist but well-drained; in partial shade or sun. Needs staking in exposed sites - see staking perennials
Propagate by division in spring or autumn or take basal cuttings in spring
Cut back after flowering to prevent self-seeding and to encourage a second flush of flowers
May be susceptible to a rust, Powdery mildews and a leaf spot
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