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Bengal Clock Vine Blue - 10" Grow bag

Bengal Clock Vine Blue - 10" Grow bag

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₹199
₹199 - ₹199
₹199
₹99
₹99 - ₹99
₹99

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  • Large sky-blue trumpet flowers
  • Fast, dense shade and screen
  • Native and well adapted
  • Long warm-season bloom
  • Low maintenance
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Country of origin: India

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Bengal Clock Vine (Thunbergia grandiflora) is a robust, woody perennial climber celebrated for its large, pale sky-blue trumpet flowers that hang in showy clusters. Native to the Indian subcontinent, it is well adapted to local conditions and quickly clothes pergolas, arches, fences and large trellises with broad, rough-textured green leaves. It flowers heavily through the warm and monsoon months and provides excellent shade and screening. Very vigorous, it needs strong support and regular pruning to keep it in bounds. Easy to grow in full sun to partial shade with moderate watering, it is a classic choice for tropical garden structures.

Specifications

Family Acanthaceae
Native region Indian subcontinent
Mature height 6-10 m as a climber
Mature spread 3-5 m
Growth rate Very fast
Foliage Large, rough, heart-shaped green leaves
Flower colour Pale sky-blue (also white form)
Flower season Warm and monsoon months
Climate zone Tropical to subtropical

Care guide

Sunlight Full sun to partial shade.
Watering Moderate; water regularly, reduce in monsoon.
Soil / mix Fertile, well-drained loam.
Temperature Thrives 18-35C; protect from frost.
Humidity Tolerates a wide range; likes warmth.
Fertilizer Feed monthly with balanced fertilizer.
Pruning Prune hard to control vigour and renew bloom.
Repotting Best in ground; repot large pots every 1-2 years.
Propagation Cuttings, layering or root division.
Pests & problems Generally hardy; occasional caterpillars, mites.
Toxicity / safety Generally low toxicity.
Difficulty Easy

Uses

Ideal for covering pergolas, arches and large fences for shade and screening, creating a cool blue-flowered canopy over seating areas.

Growing tips

In India give it a strong, permanent support and prune it hard after the main flush to keep it manageable; it can become invasive, so remove unwanted root suckers and stray growth.

Related categories

Frequently asked questions

How often should I water Bengal Clock Vine?
Water regularly to keep the soil moist during dry spells, and reduce watering during the monsoon to avoid waterlogged roots.
How much sun does it need?
It grows and flowers best in full sun to partial shade, with more sun generally giving heavier flowering.
Is it safe for pets?
It is considered to have low toxicity, but as a precaution discourage pets and children from chewing the foliage.
Can it be grown in a pot?
It can start in a large pot, but this vigorous climber performs far better planted in the ground with strong support.
How do I propagate it?
Propagate easily from stem cuttings, layering or by separating rooted suckers in the warm growing season.
Is it invasive?
It is very vigorous and can spread by suckers, so prune regularly and remove stray root growth to keep it controlled.
When does it flower?
It blooms heavily through the warm and monsoon months, hanging its blue trumpets in showy drooping clusters.
Can it be grown indoors?
No, it is far too large and vigorous for indoors; it needs an outdoor structure and full light to thrive.
How do I keep it in bounds?
Give it a strong permanent support and prune hard after flowering, cutting back long shoots to maintain size and shape.
What support does it need?
Use a sturdy pergola, arch or heavy trellis, as the mature vine becomes woody and heavy over time.

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