Thunbergia has been called “the most gorgeous vine in the world” by some. This blooming, twisted vine looks like Morning Glory from a distance, and the flowers are similar up close. Its common name of clock vine is derived from the fact that it is wrapped clockwise around support.

Thunbergia Flower

The Blue Trumpet Vine, Sky Flower, or Sky Vine are other common names. This evergreen, vigorous vine is native to Myanmar, Bangladesh, Nepal, India, and China. Thunbergia grandiflora is a vine in the Acanthaceae family. There are 100 to 150 species[1] of flowering plants in the Thunbergia genus.

Blue Trumpet Vine

Thunbergia grandiflora is a curvilinear, tropical evergreen climbing plant with woody stems. In frost-free areas, it grows 15 to 30 feet long. When cultivated as an annual plant, it will grow 6 to 8 feet long in a single season. The heart-shaped to elliptical dark green leaves (up to 4 to 8 inches long) are clad with soft hairs. The trumpet-shaped flowers (up to 3-inches) are lavenderblue with a yellow throat. Flowers appear in clusters (racemes) or singly in summer through early fall. In tropical climates, the flowers bloom year-round.

Thunbergia Flowers

Suggested Reading: Names of Flowers

Cite This Page

APA7MLA8Chicago (2023, September 21). Thunbergia. Bio Explorer. "Thunbergia" Bio Explorer, 21 September 2023, "Thunbergia" Bio Explorer, September 21 2023.
Key References
  • [1]“Thunbergia grandiflora – Plant Finder”. Accessed April 27, 2022. Link.


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