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Thunbergia grandiflora (Blue trumpet vine)

Skill rating
Skill rating
Advanced
skill rating
Maintenance level
Maintenance level
1 hour care
per year
Ultimate height
Ultimate height
10m
Max height
Ultimate spread
Ultimate spread
5m
Max spread
Time to maturity
Time to maturity
1-2 years
To maturity

Plant details

Botanical name: Thunbergia grandiflora

Other names: Blue trumpet vine, Bengal clock vine, Bengal trumpet, Blue skyflower, Blue-sky flower vine

Genus: Thunbergia Thunbergia

Species: T. grandiflora - T. grandiflora is a tender, vigorous, twining, evergreen shrub with toothed, heart-shaped, dark green leaves and trumpet-shaped, pale violet-blue flowers with yellow throats blooming in summer.


Thunbergia grandiflora is: Deciduous

Flower: Pale-blue, Violet in Summer

Foliage: Dark-green in All seasons

Habit: Climbing, Twining

Awards: RHS AGM (Award of Garden Merit)

How to care

Watch out for

Specific pests: Aphids , Glasshouse red spider mite , Glasshouse whitefly , Scale insects Aphids , Glasshouse red spider mite , Glasshouse whitefly , Scale insects

General care

Pruning: Pruning group 11. Prune after flowering, or in late winter or early spring to fit available space.. REGISTER to read more...

Propagation methods: Seed, Softwood cuttings. REGISTER to read more...


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Where to grow

Thunbergia grandiflora (Blue trumpet vine) will reach a height of 10m and a spread of 5m after 1-2 years.

Suggested uses: Conservatory, Containers, Greenhouse, Sub-Tropical

Cultivation: Grow under glass in a loam-based compost in bright, filtered light with shade from intense sunlight. Water moderately when in growth and apply liquid fertiliser once a month. Water sparingly when dormant.

Soil type: Loamy

Soil drainage: Moist but well-drained, Well-drained

Soil pH: Acid, Alkaline, Neutral

Light: Full Sun

Aspect: South, West

Exposure: Sheltered

Hardiness: Indoor heated (H1)


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Companion plants

We do not currently have companion plants added for this plant.

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Botanical name: Thunbergia grandiflora

Other names: Blue trumpet vine, Bengal clock vine, Bengal trumpet, Blue skyflower, Blue-sky flower vine

Genus: Thunbergia Thunbergia

Species: T. grandiflora - T. grandiflora is a tender, vigorous, twining, evergreen shrub with toothed, heart-shaped, dark green leaves and trumpet-shaped, pale violet-blue flowers with yellow throats blooming in summer.


Thunbergia grandiflora is: Deciduous

Flower: Pale-blue, Violet in Summer

Foliage: Dark-green in All seasons

Habit: Climbing, Twining

Awards: RHS AGM (Award of Garden Merit)

Watch out for

Specific pests: Aphids , Glasshouse red spider mite , Glasshouse whitefly , Scale insects

General care

Pruning: Pruning group 11. Prune after flowering, or in late winter or early spring to fit available space.. REGISTER to read more...

Propagation methods: Seed, Softwood cuttings. REGISTER to read more...


Sign up for your FREE ACCOUNT today or login to receive detailed monthly care instructions

Thunbergia grandiflora (Blue trumpet vine) will reach a height of 10m and a spread of 5m after 1-2 years.

Suggested uses: Conservatory, Containers, Greenhouse, Sub-Tropical

Cultivation: Grow under glass in a loam-based compost in bright, filtered light with shade from intense sunlight. Water moderately when in growth and apply liquid fertiliser once a month. Water sparingly when dormant.

Soil type: Loamy

Soil drainage: Moist but well-drained, Well-drained

Soil pH: Acid, Alkaline, Neutral

Light: Full Sun

Aspect: South, West

Exposure: Sheltered

Hardiness: Indoor heated (H1)


Use My Plant Check to see if this plant is a good match for your garden

We do not currently have companion plants added for this plant.

In order to add a note on this plant, please add this plant to your plant lists.

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Soil types: Loamy Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Alkaline, Neutral Tell us...
Light: Full Sun Tell us...
Aspect: South, West Tell us...
Exposure: Sheltered Tell us...
Hardiness: Indoor heated (H1) Tell us...

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Penstemon 'Kay Burton' (3 Plants)
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Delphinium 'Magic Fountains Dark Blue' (3 Plants)
£ 10.00
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Verbena Bonariensis (6 Plants)
£ 20.00
£21.00
Penstemon 'Laura' (3 Plants)
£ 10.00
£12.00
Helenium 'Moerheim Beauty' (3 Plants)
£ 10.00
£12.00
Echinacea Purpurea (3 Plants)
£ 10.00
£12.00

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