Campanula 'Swannables'

RHS Plant Profile
bellflower 'Swannables'

Save a plant

Where do you want to save Campanula 'Swannables'?

Plants I own
Wishlist
Go to My Plants
bellflower 'Swannables' RHS / Joanna Kossak

Synonyms

Campanula (_punctata_ × _ossetica_, 'Swannables')
Campanula _punctata_ × _Symphyandra ossetica_, 'Swannables'
Campanula (_punctata_ × _Symphyandra ossetica_)

Plants for pollinators
Herbaceous Perennial
Buy this from Plant Nurseries
3 Suppliers

A clump-forming and spreading perennial with erect, leafy stems to 40cm tall and pale pink to lilac-blue, bell-shaped summer flowers

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
0.1-0.5 metres

Growing Conditions

Chalk Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or North–facing or West–facing or East–facing
Exposure
Exposed or Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Campanulaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
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 a moist but well-drained soil in full sun or partial shade

Propagation

Propagate by division or basal cuttings

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Gravel garden
  • Patio and container plants
  • Rock garden
  • Wildlife gardens
  • Garden edging
  • Ground cover

Pruning

No pruning required

Pests

May be damaged by slugs and snails

Diseases

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