Annuals

Thunbergia alata

Black-eyed Susan vine

Representative black-eyed susan vine. Colors and forms vary by selection.

Dark-centered flowers brighten a fast-growing, twining vine. Let it climb a small trellis or trail from a basket for a long summer display. Despite the common name, this tropical vine is unrelated to perennial black-eyed Susans.

At a glance

Sun: Full sun to part shade
Mature size: 3 ft.–8 ft. (varies by selection) tall × 3 ft.–6 ft. (varies by selection) wide
Water: Regular moisture; well-drained soil
Bloom: Summer to frost

Sizes & prices

10"$25.99
8"$18.99

Catalog updated September 8, 2026. This is not a live stock count; please call to confirm availability and price.

Ask about this plant

Select a section to expand.

Resistance & tolerances

Wet soil: Needs good drainage; avoid standing water.

Pollinators & wildlife

Attracts: Bees, Butterflies, Hummingbirds

Seasonal interest

Habit: Twining vine; train onto a trellis or let stems trail from a basket.

Growing & care

Pruning: Guide shoots onto supports; trim wandering stems to control spread.
Feeding: Feed moderately; too much nitrogen encourages leaves instead of flowers.

Sources & photo credits

NC State Extension

University of Wisconsin Extension

Photo: Kim Starr · CC BY 3.0

Reviewed September 22, 2026. Growing conditions vary by location.