Black-Eyed Susan Vine (Thunbergia): Care Guide for Hanging Baskets

Identifying and Growing Thunbergia alata: The Charming Black-Eyed Susan Vine

Those mystery hanging baskets with trailing vines and gold-to-pale-yellow flowers with dark centers? They're almost certainly Thunbergia alata—Black-Eyed Susan Vine. Here's how to keep them thriving.

Hardiness and Winter Care

Perennial in zones 9b–11 (South Texas qualifies). In colder zones, treat as annual or overwinter indoors. If frost threatens, cut back foliage, move basket to protected spot, water sparingly to prevent total dry-out, and return outdoors in spring.

Growing Conditions

• Light: Sun to partial shade
• Bloom: Year-round if nights stay above 60°F (16°C) with winter sun
• Soil: Well-draining mix; moist but never soggy
• Water: Regular—don't allow to dry out completely
• Fertilizer: Balanced fertilizer at half strength every 2 weeks

In-Ground Potential

Plant along trellis or fence in fall. The vine will climb and provide vertical interest. Occasional trimming promotes vigor and more blooms.