How to Grow Bengal Clock Vine | Thunbergia Grandiflora Care

Last Updated: 13.11.2023

Learn how to grow Bengal Clock Vine, adorned with charming blossoms, and discover the secrets to their successful growth in your garden.

Bengal Clock Vine 1

Thunbergia Grandiflora, a splendid and unique plant, holds the promise of adding grace to your garden. Let’s explore how to grow Bengal Clock Vine and read ahead to learn about growing them successfully.

Bengal Clock Vine Key Facts

NameBengal Clock Vine
Common NamesBengal Trumpet, Blue Skyflower, Blue Thunbergia, Blue Trumpet Vine, Clockvine, Skyflower and Skyvine
OriginChina, India, Nepal, Bangladesh, Indochina and Myanmar
TypeEvergreen Vine
SoilWell Drained
SunlightFull Sun to Partial Shade
FlowersLight Blue or Violet
Blooming SeasonSummer
Height20 to 30 Feet

Bengal Clock Vine Information

The Bengal Clock Vine, also known as the Blue Skyflower, is a delightful climbing plant native to India and other parts of Southeast Asia. This is a vigorous climber that can reach heights of up to 20-30 feet when grown in ideal conditions.

One of its most beautiful features is its large, sky-blue, trumpet-shaped flowers with a distinct white or yellow throat. The vine blooms profusely, especially during the warm months, and the flowers are known for their vibrant color and striking appearance.

Discover How to Grow Balloon Vine here

The Bengal Clock Vine is native to India, making it a common and beloved ornamental plant in many Indian gardens. The leaves of this vine are heart-shaped and have a glossy green appearance.
It thrives in tropical and subtropical regions, where it can be found adorning fences, trellises, and arbors. It is a wonderful addition to any garden, bringing a touch of elegance and vibrant color to its surroundings.

Botanical Name: Thunbergia Grandiflora

Here are the names of Bengal Clock Vines in Different Indian Languages:

Hindi: नीलकण्ठ लता (Neelkanth Lata)
Bengali: নীলকণ্ঠ লতা (Nilkanth Lota)
Telugu: నీలకంఠ ఆకు (Neelakanth Aaku)
Marathi: नीलकंठी लाकडी (Neelkanthi Lakaadi)
Tamil: நீலகண்ட கொடி (Neelakanda Kodi)
Gujarati: નીલકંઠ લતા (Neelkanth Lata)
Malayalam: നീലകണ്ഠ കൊടി (Neelakantha Kodi)
Kannada: ನೀಲಕಂಠ ಸಿಪ್ಪು (Neelakantha Sippu)

Read about How to Grow Flame Vine here

How to Grow Bengal Clock Vine

Thunbergia Grandiflora can be propagated through stem cuttings. Here’s how to do it:

  • Choose a healthy Bengal Clock Vine plant.
  • Take 4-6 inch stem cuttings with a couple of leaf nodes.
  • Use well-draining soil mixed with perlite or vermiculite.
  • Create holes in the soil, dip cuttings in rooting hormone, and plant them.
  • Cover with a plastic dome for humidity.
  • Transplant when roots are established.

Discover How to Grow Acalypha Indica Easily here

Requirements to Grow Bengal Clock Vine

Bengal Clock Vine 3


Bengal Clock Vine thrives in full sun to partial shade. It prefers at least 6 hours of sunlight per day. In hot climates, some afternoon shade can protect it from scorching.


Plant in well-draining soil with a slightly acidic to neutral pH (pH 6.0 to 7.0). In addition, amending the soil with organic matter like compost can improve its fertility and drainage.


Keep the soil consistently moist but not waterlogged. Water deeply when the top inch of soil feels dry.

During the growing season, water regularly, and reduce the frequency in winter. Ensure good drainage to prevent waterlogging.


Bengal Clock Vine prefers warm and tropical conditions. It does well in temperatures between 4-35°C. It cannot tolerate high temperatures or low temperatures.

So protect it from cold and hot temperatures, and consider growing it annually in regions with adequate temperature range.

Read More About How to Grow Commelina Benghalensis Easily here

Bengal Clock Vine Care


Feed your Bengal Clock Vine with a balanced, all-purpose liquid or granular fertilizer during the growing season. In addition, follow the label instructions for application rates. Fertilize every 4-6 weeks.


Regular pruning is essential to control its growth and shape. Prune to remove dead or leggy growth and to encourage branching. This will help maintain a more compact and bushy form. Pruning also promotes more flowering.

Pests and Diseases

Look for common garden pests like root-knot nematodes, aphids, and spider mites. Treat any infestations promptly with appropriate insecticidal soaps or insecticides.

Thunbergia Grandiflora is relatively disease-resistant. Additionally, good air circulation can help prevent fungal issues. Ensure proper spacing between plants to improve air circulation.

Discover How to Grow Polyscias Scutellaria here

Uses of Bengal Clock Vine

The Bengal Clock Vine plant has various uses:

  • Ornamental Purposes: It is commonly grown for its attractive and vibrant flowers, making it a popular choice for ornamental gardens and landscaping.
  • Medicinal Uses: In traditional medicine, certain parts of the plant are believed to possess medicinal properties and are used for treating ailments.
  • Cultural Significance: In some cultures, the plant may have symbolic or cultural significance, and its flowers may be used in ceremonies or celebrations.
  • Attracting Wildlife: The colorful blooms of the Thunbergia Grandiflora attract pollinators like bees and butterflies, contributing to biodiversity in the garden.
  • Fence or Trellis Cover: Due to its climbing nature, the plant is often used to cover fences, trellises, or structures, providing a natural and visually appealing barrier.
  • Aesthetic Enhancement: Whether in pots, hanging baskets, or as a ground cover, the plant adds aesthetic charm to various settings.

Leave a Comment

Send this to a friend