Campanula portenschlagiana

RHS Plant Profile
wall bellflower

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wall bellflower RHS 2002
wall bellflower visionspictures.com

Other common names

Adria bellflower, Dalmatian bellflower

Synonyms

Campanula muralis

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A low-growing perennial, quickly forming an evergreen mound to 15cm tall of small, broadly heart-shaped, mid-green leaves. Tubular to funnel-shaped, violet-blue flowers, 2cm in length, appear on loose, branching stems in summer

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 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)
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Campanulaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Matforming, Trailing
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
S Europe

How to Grow

Cultivation

Ideal for borders, banks and rock gardens in moist but well-drained soil and sun or light shade. Will scramble upwards if planted at the base of a wall, and seed in cracks if conditions are favourable. See campanula cultivation

Propagation

Propagate by seed, or propagate by basal cuttings in spring

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
  • Flower borders and beds

Pruning

No pruning required, spent flowers and stems may be removed to tidy

Pests

May be susceptible to slugs and snails

Diseases

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