Campanula 'Addenda Blue Star'

RHS Plant Profile
bellflower 'Addenda Blue Star'
Herbaceous Perennial

A low growing trailing perennial which forms a neat mound of atractive small, round to ovate, mid-green, toothed leaves. Numerous, outward facing, violet-blue, star-shaped, single flowers with white centres are borne on short stalks sitting just above its foliage providing a long flowering display in summer. Suitable for containers, it is an easy to grow plant that dislikes wet winters.

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
Alkaline or Neutral or Acid

Position

Full sun Partial shade
Aspect
East–facing or North–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H5

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Campanulaceae
Native to GB/Ireland
No
Foliage
Deciduous
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
Unresolved

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. Very suitable for hanging baskets and containers.

Propagation

Propagate by seed

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Hanging Basket
  • Patio and container plants
  • Low Maintenance
  • Flower borders and beds
  • Garden edging

Pruning

cut back after flowering for a second flush in september

Pests

May be susceptible to slugs and snails

Diseases

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