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Herbaceous Perennial

Campanula glomerata
  • RHS Plants for pollinators

clustered bellflower

Vigorous rhizomatous perennial to about 45cm tall, forming an extensive clump of erect stems bearing dark green ovate leaves, and dense terminal racemes of deep violet-blue, or white, 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
Loam
Moisture
Moist but well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Blue Purple White 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
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

Correct

Plant range
Europe, temp. Asia

How to grow

Cultivation

Grow in fertile neutral to alkaline, moist but well-drained soil in sun or part shade. Delicate flower colours are best preserved in shade. Suitable for naturalizing in woodland and wildflower gardens

Propagation

Propagate by seed, propagate by division in spring or autumn or by basal softwood cuttings in spring

Suggested planting locations and garden types
  • Cottage and informal garden
  • Wildflower meadow
  • Wildlife gardens
  • Flower borders and beds
  • Ground cover
Pruning

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

Pests

May be susceptible to slugs and snails

Diseases

May be susceptible to a rust, powdery mildews and a leaf spot

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