Campanula thyrsoides
yellow bellflower
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
Buy this plant
Size
Ultimate height
0.5–1 metresTime to ultimate height
1–2 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Cream Yellow | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
- Partial shade
Aspect
South–facing or North–facing or East–facing or West–facing
Exposure
Exposed or Sheltered Hardiness
H5Botanical details
- Family
- Campanulaceae
- Native to the UK
- 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
Pruning
No pruning required
Pests
Generally pest-free
Diseases
Generally disease-free but may be susceptible to rust, powdery mildews and a leaf spot
Get involved
The Royal Horticultural Society is the UK’s leading gardening charity. We aim to enrich everyone’s life through plants, and make the UK a greener and more beautiful place.