Thunbergia alata, commonly known as the Black-eyed Susan vine, is a fast-growing, cheerful tropical climber famous for its vibrant yellow, orange, or white flowers centered with a dark brown or black eye. Good in containers
Key Plant Profile
- Botanical Name: Thunbergia alata
- Family: Acanthaceae
- Type: Tender evergreen perennial grown as an annual in cooler climates (hardy in USDA Zones 9a–11)
- Growth Habit: Fast-twining vine or trailing plant, reaching up to 6 to 8 feet (or ~2 meters) in a single season
- Bloom Period: Mid-summer through late autumn (or nearly year-round in frost-free regions)
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Purchased from Yamagami Nursery in Cupertino on October 23, 2026.
