Trachelium caeruleum
blue throatwort
T. caeruleum is an erect perennial to 90cm, usually grown as an annual, with lance-shaped leaves and small, slightly fragrant, violet-blue flowers in domed clusters to 15cm across in summer
Size
Ultimate height
0.5–1 metresTime to ultimate height
1–2 yearsUltimate spread
0.1–0.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Blue | Green | ||
| Autumn | Green | |||
| Winter |
Position
- Full sun
Aspect
West–facing or East–facing
Exposure
Exposed or Sheltered Hardiness
H2Botanical details
- Family
- Campanulaceae
- Native to the UK
- No
- Foliage
- Deciduous
- Habit
- Bushy
- Genus
Trachelium can be cushion-forming or erect perennials with small, simple leaves and tubular flowers with 5 spreading lobes, in summer
- Name status
Correct
- Plant range
- W Mediterranean
How to grow
Cultivation
Grow in moderately fertile, well-drained soil in full sun, ideally with some midday sun. Water freely in dry weather
Propagation
Propagate by seed sown at 16°C in spring
Suggested planting locations and garden types
- City and courtyard gardens
- Patio and container plants
- Cottage and informal garden
- Flower borders and beds
- Cut flowers
- Wall side borders
Pruning
Cut back after flowering
Pests
Generally pest-free
Diseases
Generally disease free
Get involved
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