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Alpine RockeryHerbaceous Perennial

Campanula poscharskyana 'Stella'
  • RHS AGM
  • RHS Plants for pollinators

trailing bellflower 'Stella'

'Stella' is a tufted perennial with rounded basal leaves and spreading stems bearing loose racemes of starry, light violet-blue flowers 2.5cm in width

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Size
Ultimate height
Up to 10cm
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Green
Autumn Green
Winter Green
Position
  • Full sun
  • Partial shade
Aspect

South–facing or East–facing

Exposure
Exposed
Hardiness
H5
Botanical details
Family
Campanulaceae
Native to the UK
No
Foliage
Semi evergreen
Habit
Clump forming
Genus

Campanula may be annuals, herbaceous or evergreen perennials, with bell or star-shaped, often blue, flowers in late spring or summer

Name status

Accepted

How to grow

Cultivation

Grow in moist but well-drained soil in sun or partial shade; can be invasive as spreads by underground runners

Propagation

Propagate by division in spring or autumn

Suggested planting locations and garden types
  • City and courtyard gardens
  • Patio and container plants
  • Rock garden
  • Cottage and informal garden
  • Gravel garden
  • Garden edging
  • Banks and slopes
  • Flower borders and beds
  • Ground cover
Pruning

Cut back after flowering to maintain compact shape

Pests

May be attacked by slugs and snails

Diseases

May be subject to powdery mildews

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