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Herbaceous Perennial

Campanula glomerata 'Emerald'
  • RHS Plants for pollinators

clustered bellflower 'Emerald'

A robust herbaceous perennial that forms large clumps of dark red erect stems with dark green ovate leaves and close-packed terminal racemes of small pale sky-blue bell-shaped flowers providing a long flowering display in 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 Red Green
Summer Red Blue Green
Autumn Red Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

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

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Campanulaceae
Native to the UK
No
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

Accepted

How to grow

Cultivation

Will grow well in fertile, neutral to alkaline soil that is moist but well-drained, in full sun or partial shade avoiding wet conditions in winter. A semi-shade position will ensure the best flower colour is preserved.

Propagation

Propagate by seed, division or by basal cuttings in spring

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Wildlife gardens
  • Flower borders and beds
  • Garden edging
Pruning

Cut back after flowering to promote extended flowering

Pests

May be susceptible to slugs and snails

Diseases

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

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