Bengal clockvine (Thunbergia grandiflora)
Care, watering, light and tips for Bengal clockvine on Floravia.
Quick facts
- Family: Acanthaceae
- Difficulty: Moderate care
- Watering: every 3 days
- Light: Partial shade
- Temperature: 10–30 °C
About Bengal clockvine
Thunbergia grandiflora, known as Blue Trumpet Vine, is a vigorous perennial tropical climber belonging to the Acanthaceae family. It is characterized by its large, bell-shaped flowers, displaying a distinctive lavender-blue or mauve color, often with a pale yellow throat. This vine is ideal for covering pergolas, fences, or walls, creating an impressive floral display in warm climates.
Native range
India
Care tips
It requires full sun for abundant flowering, though it tolerates partial shade. Keep the substrate consistently moist, but avoid waterlogging, especially in warm climates. It prefers rich, well-draining, and slightly acidic soils. A common mistake is not providing adequate support, which limits its growth and flowering.
How to save a dying Bengal clockvine
- Warning signs
- Yellowing or drooping leaves, no blooms, stunted growth. May have pests like spider mites or whiteflies.
- First aid
- Check drainage and soil moisture. If potted, consider repotting with fresh soil. Prune dry branches.
- What kills it
- Overwatering (root rot) or prolonged drought. Also lack of sun or poor soil.
- Can it be saved?
- Yes, if you act quickly. It's resilient but needs good drainage and full sun. Pruning aids recovery.