Black-eyed Susan vine

Thunbergia alata has a vine habit, and can grow to a height of 6-8 ft (1.8-2.4 m) in tropical zones, or much less as a container plant or as an annual. It has twinning stems with heart or arrow-shaped leaves. It favours sun to partial shade. The flowers typically are warm orange with characteristic dark spot in the centre. However, different varieties can be red, orange, red-orange, white, pale yellow, or bright yellow, with or without the characteristic chocolate-purple centre which inspires the common name. Black-eyed Susans are also known for producing flowers as early as six weeks after germination.