Thunbergia grandiflora
blue trumpet vine
A very vigorous, twining, evergreen, woody-stemmed perennial climber to 6m or more, with heart-shaped, coarsely-toothed leaves and racemes of trumpet-shaped, light violet-blue flowers 7cm across, yellow in the throat
Size
Ultimate height
4–8 metresTime to ultimate height
5–10 yearsUltimate spread
1.5–2.5 metresGrowing conditions
Moisture
Moist but well–drainedpH
Acid, Alkaline, NeutralColour & scent
| Stem | Flower | Foliage | Fruit | |
| Spring | Green | |||
|---|---|---|---|---|
| Summer | Blue White | Green | ||
| Autumn | Green | |||
| Winter | Green |
Position
- Full sun
Aspect
South–facing or East–facing
Exposure
Sheltered Hardiness
H1BBotanical details
- Family
- Acanthaceae
- Native to GB / Ireland
- No
- Foliage
- Evergreen
- Habit
- Climbing
- Genus
Thunbergia can be annuals or perennials, often twining climbers, with simple opposite leaves and trumpet-shaped or salver-shaped flowers borne singly in leaf axils, or in racemes, in summer
- Name status
Correct
- Plant range
- N India
How to grow
Cultivation
Grow under glass in a peat-free, loam-based potting compost in bright filtered light with shade from hot sun. When in growth water moderately and apply a general liquid fertiliser monthly. Water sparingly at other times
Propagation
Propagate by seed or softwood cuttings
Suggested planting locations and garden types
- Patio and container plants
Pruning
Pests
May be susceptible to glasshouse whitefly, glasshouse red spider mite, aphids and scale insects when grown under glass
Diseases
Generally disease-free
Get involved
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