About
This 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.
About the 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
Growing conditions
SunlightFull sun
Soil typeLoam
Soil pHAcid, Alkaline, Neutral
Soil moistureMoist but well-drained
AspectSouth-facing, East-facing
ExposureSheltered
UK hardinessH1B
Plant details
Plant typeClimber Wall Shrub, Conservatory Greenhouse
HabitClimbing
FoliageEvergreen
Height4-8 metres
Spread1.5-2.5 metres
Time to full height5-10 years
Suggested usesPatio and container plants
Native toN India
Care notes
CultivationGrow 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
PruningPruning group 11
PropagationPropagate by seed or softwood cuttings
Pest resistanceMay be susceptible to glasshouse whitefly, glasshouse red spider mite, aphids and scale insects when grown under glass
Disease resistanceGenerally disease-free