Thunbergia alata - Black-Eyed Susan Vine

Thunbergia alata

Thunbergia alata is a twining perennial vine that can be grown as an annual in zone 7. They are a great plant for hanging baskets or for trellises. They are fast growers and bloom quickly from seed. They are native to tropical Africa.

Blooming Time: Thunbergia alata will bloom all year long if night temperatures are above 60 degrees and they get full sun in the winter months.

Culture: Thunbergia alata needs full sun to light shade with intermediate to warm temperatures, and minimum temperatures of 60 degrees at night. In the greenhouse, we use a soil mix consisting of 2 parts peat moss to 2 parts loam to 1 part sand or perlite. The plants are not very drought tolerant and should be watered regularly for optimum growth. Fertilize every other week with a balanced fertilizer diluted to ½ the strength recommended on the label. Occasional trimming helps keep the plant growing vigorously and helps to promote more blooms.

Propagation: Thunbergia alata are propagated by cuttings or by seed. Plants grown from seed are more vigorous than those from cuttings.

Thunbergia alata was featured as Plant of the Week July 28-August 3, 2000.

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Cal's Plant of the Week was provided as a service by the University of Oklahoma Department of Microbiology & Plant Biology and specifically Cal Lemke, who used to be OU's botany greenhouse grower and an avid gardener at home as well. If the above links don't work, then try the overview site. You may also like to look at the thumbnail index. ©1998-2012 All rights reserved.