What is the plant
Thunbergia grandiflora is an evergreen vine in the family Acanthaceae. It is native to China, India, Nepal, Indochina and Burma and widely naturalised elsewhere.
Thunbergia grandiflora, commonly called blue trumpet vine, clock vine, sky vine or sky flower, is a woody-stemmed, evergreen, tropical, twining climber. It grows to 15-30’ long in frost free areas. When grown as an annual, it grows to 6-8’ long in a single season. It is native to India. Elliptic to heart-shaped dark green leaves (to 4-8” long) are covered with soft hairs. Trumpet shaped flowers (to 3”) are lavender blue with yellow throats. Flowers appear singly or in clusters (racemes) in summer to early fall. Flowers bloom year round in tropical climates. Genus name honors Carl Peter Thunberg (1743-1828), Swedish botanist. He traveled in South Africa and Japan and became professor of botany at Uppsala University. Specific epithet means large-flowered.
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