black-eyed susan vine
Thunbergia alata
RHS AGM 2024
USDA zones10 to 11
SunHandles full sun to partial sun
WaterHandles moderate to moist soil
Size3 to 8 feet tall3 to 6 feet wide
- Habit
- Cascading
- Bloom season
- Spring, summer, autumn
- Bloom color
- Orange-yellow
- Foliage color
- Green
- Soil types
- Sand, loam, chalk
- Soil pH
- Acid, alkaline, neutral
Garden uses
Attracts
Notes
Black-eyed Susan vine (Thunbergia alata) is a cascading vine for containers, privacy screens, and pollinator gardens. It grows outdoors year-round in USDA zone 10 and warmer, down to about 30°F (-1°C). In colder areas, grow it as a houseplant or bring it indoors for winter. This plant likes full or part sun and average to moist, sandy, loamy, or chalky soil. It bears orange-yellow flowers and attracts butterflies, hummingbirds, bees, and birds.
Pairs well with Moonflower, Mexican bush sage, and Vinca.
Native range
Africa.