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Herbaceous Perennial

Campanula glomerata
  • RHS Plants for pollinators

clustered bellflower

C. glomerata is a vigorous rhizomatous perennial forming an extensive clump of erect stems bearing dark green ovate leaves, and dense terminal racemes of deep violet-blue, bell-shaped flowers all summer

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Sand
Moisture
Moist but well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Purple Green
Autumn Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or North–facing or East–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Campanulaceae
Native to the UK
Yes
Foliage
Deciduous
Habit
Suckering
Genus

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

Name status

Correct

Plant range
Europe, temp. Asia

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How to grow

Cultivation

Flower colours are best preserved in the shade. Suitable for naturalizing in woodland and wildflower gardens.

Propagation

Propagate by seed, division or take basal cuttings

Suggested planting locations and garden types
  • Cottage and informal garden
  • Wildflower meadow
  • Low Maintenance
  • Flower borders and beds
Pruning

Cut back after flowering to prevent self-seeding and to encourage a second flush of flowers

Pests

May be damaged by slugs and snails

Diseases

May be infected by a rust, powdery mildews and a leaf spot

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