Campanula thyrsoides

RHS Plant Profile
yellow bellflower
yellow bellflower RHS

Other common names

thyrsoid bellflower

Plants for pollinators
Herbaceous Perennial Annual Biennial

An upright biennial or short-lived perennial to around 50cm tall with a rosette of narrow, stiffly hairy, lance-shaped leaves to 12cm long. Unbranched, bristly and leafy stems develop in summer and bear a dense, fat spike of creamy-yellow, slightly fragrant, tubular flowers up to 2.5cm long

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

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

Growing Conditions

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

Position

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

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Campanulaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
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
European Alps

How to Grow

Cultivation

Grows best in a well-drained soil in full sun

Propagation

Propagate by seed

Suggested planting locations and garden types

  • Cottage and informal garden
  • Gravel garden
  • Rock garden
  • City and courtyard gardens
  • Wildlife gardens

Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free but may be susceptible to rust, powdery mildews and a leaf spot