Indian clock vine, Thunbergia mysorensis, is a flowering evergreen vine found in India. If you have the right conditions to grow it, this vine is a stunner. It can grow up to 20 feet (6 m.) long and produces flower clusters up to 3 feet (1 m.) long

Indian clock vine, scientifically known as Thunbergia mysorensis, is a vigorous climbing vine that belongs to the family Acanthaceae. It is also commonly referred to as Mysore trumpet vine or simply Mysorensis.

Here are some key features of Thunbergia mysorensis:

1. Appearance: The Indian clock vine is known for its stunning and unique pendulous flowers. The flowers are large and tubular, typically measuring around 5-7 centimeters in length. They are borne in long, drooping clusters that resemble the shape of a clock pendulum, hence the common name "Indian clock vine." The flowers are usually a deep maroon or red color with a yellow or cream-colored throat.

2. Native Range: Thunbergia mysorensis is native to the southwestern regions of India, particularly the state of Karnataka. However, it is widely cultivated and grown in various tropical and subtropical regions around the world.

3. Growing Conditions: This vine prefers warm climates and thrives in full sun to partial shade. It requires a well-draining soil and regular watering to keep the soil consistently moist but not waterlogged. Indian clock vine is known for its rapid growth and vigorous nature, often reaching heights of 6-9 meters (20-30 feet).

4. Flowering Season: Thunbergia mysorensis typically blooms during the warmer months of the year, particularly in spring and summer. The flowering season can vary depending on the climate and growing conditions.

5. Uses: The Indian clock vine is primarily grown as an ornamental plant due to its eye-catching flowers. It is often used to cover walls, fences, pergolas, or other structures. It can also be trained on trellises or arbors. The pendulous clusters of flowers create a striking visual display.

Indian clock vine requires support or a structure to climb on, as it is a vine that twines or clings to surfaces using tendrils. Regular pruning is necessary to control its growth and shape.

Please note that while Thunbergia mysorensis is a beautiful plant, it can be aggressive in certain climates and may become invasive. It is always important to check local regulations and consider its potential impact on the surrounding environment before cultivating it.