Black-Eyed Susan Vine
Thunbergia alata
A fast-growing tropical vine with vibrant trumpet-shaped flowers featuring distinctive dark centers. Despite its name, it's unrelated to the North American Rudbeckia.
Acanthaceae (Acanthus family)
Late spring through early fall (May-October), blooms with each flush of growth
Symbolism & Meanings
Key Meanings
Perfect For
Color Meanings
Available Colors
Cultural Significance
Native to tropical Africa, this vine has become a beloved annual in temperate gardens worldwide. It attracts pollinators including bees, butterflies, and hummingbirds, making it valuable for wildlife gardens.Botanical Information
Physical Characteristics
Natural Habitat
Growing Guide
Sunlight
Full sun (6-8 hours) for best flowering; tolerates partial shade but may bloom less
Water
Regular watering to keep soil consistently moist but not waterlogged; wilts quickly when dry
Soil
Rich, Moist, Well-drained, Fertile
Expert Growing Tips
Plant after last frost when soil reaches 60°F (15°C)
Provide support structure for climbing or allow to trail
Space plants 14-16 inches apart
Fertilize every 2-3 weeks during bloom period
Self-cleaning flowers require no deadheading
Can overwinter indoors in containers or take cuttings
Uses & Benefits
Ornamental Uses
- Climbing on trellises, fences, and arbors
- Cascading from hanging baskets and containers
- Ground cover when allowed to sprawl
- Privacy screens and living walls
- Mixed container plantings as thriller or spiller
Traditional Uses
- Not known for medicinal uses; primarily ornamental
- Plant parts may contain mild toxins and should not be consumed
Disclaimer: Information provided is for educational purposes only. Consult healthcare professionals before using any plant medicinally.
Further Reading
Frequently Asked Questions about the Black-Eyed Susan Vine
Is black-eyed susan vine a perennial?
Black-eyed Susan vine is a tender perennial native to tropical Africa, but it's grown as an annual in most climates. It's only hardy in USDA zones 10-12.
How fast does black-eyed susan vine grow?
Black-eyed Susan vine is a fast grower, reaching 3-8 feet in a single season under ideal conditions. In warmer climates, it can grow even longer.
Does black-eyed susan vine need full sun?
Black-eyed Susan vine grows best in full sun with 6-8 hours of direct light daily. It tolerates partial shade but may produce fewer flowers.
Do black-eyed susan vines attract hummingbirds?
Yes, black-eyed Susan vines are excellent for attracting hummingbirds, butterflies, and bees with their tubular, nectar-rich flowers.
Quick Facts
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