Thunbergia plants are half hardy climbing plants.
They bloom from summer to autumn, and usually carry flat or trumpet like flowers.
Thunbergia alata - Black-eyed Susan Vine by Blumenbiene; Creative Commons.
Thunbergia flowers may be white, yellow or orange, and often have a black centre.
Thunbergia Mysorensis - Clock Vine by Sree314.
There are many different species of Thunbergia grown in the garden. Some of the common names of plants belonging to this genus include Black eyed Susan Vine, Orange clock vine, Dolls Shoes, Clock vine, and Sky vine.
Thunbergia alata (Black-eyed Susan Vine), photograph by Forest and Kim Starr; CC.
Thunbergia grandiflora (Bengal Clockvine / Blue Skyflower / Skyvine), photograph by Bach Arul Ziegen; CC.
Thunbergia erecta (Bush Clockvine), photograph by Mauro halpern; CC.
Thunbergia laurifolia (Laurel Clockvine / Blue Trumpet Vine), picture by Forest and Kim Starr; CC.
Common Names: Clockvine, Black Eyed Susan Vine, Thunbergias, Brick and Butter Vine, Dolls Shoes, Blue Trumpet Vine, Laurel Clock Vine.
Life Cycle: Half hardy annual. Half hardy perennial.
Height: 80 to 320 inches (200 to 800 cm).
Native: Southern and Eastern Africa, South Asia.
Growing Region: Zones 5 to 10.
It is best to start growing Black Eyed Susan Vine and other Thunbergia plants indoors when growing from seeds. The process should be started about 7 or 8 weeks before the expected middle of spring.
The seeds should be sown into peat pots and lightly covered. It should take about two or three weeks for Thunbergia seeds to germinate at a temperature of 18 to 25 degrees centigrade (64 to 77°F).
Once ready, transplant the Thunbergia vine outdoors in mid spring (when it always remains above 10 degrees centigrade(50°F)). Ideally, use a spacing of 30 to 50 cm (12 to 20 inches).
Ideally the vines should grow in a sunny or a partially shaded area of the garden. This should have a moist, organic soil.
These vines like to have a moist soil, so keep well watered during the growing season.
If you require more black-eyed Susan vine, Clockvine, or other Thunbergia, then you can take cuttings in the spring.
The Thunbergia genus, commonly known as Black-eyed Susan vine, comprises about 200 species.
Yes, Thunbergia species are popular ornamental plants, known for their vibrant, trumpet-shaped flowers. They're excellent as climbers or groundcovers.
The most commonly grown species is Thunbergia alata, also known as Black-eyed Susan vine.
Thunbergia species are not known for their fragrance, but their striking flowers make them highly desirable for gardens.
Thunbergia prefers a sunny to partially shaded location with moist, well-drained soil. They're perfect for trellises, hanging baskets, or groundcovers.
Some Thunbergia species like Thunbergia grandiflora can be invasive in parts of the USA. Check local regulations for the most accurate information.
To remove Thunbergia, uproot the entire plant, making sure to remove all roots to prevent regrowth.
The Thunbergia plant genus (Black-eyed Susan vine / Clockvine) belongs to the Acanthaceae family. It includes around 200 species of flowering plants native to tropical regions in Africa, Madagascar, South Asia, and New Guinea.
Thunbergia plants prefer warm climates, full sunlight to partial shade, and well-drained soil. They can be grown from seeds, which should be sown in spring, or from cuttings. They're known for their rapid growth and vibrant flowers.
I hope that you enjoyed this guide on how to grow Thunbergia plants. You may also enjoy the following Gardener's HQ growing guides: How to grow Acanthus hungaricus; Wild Petunia, and Ruellia plants.