Botanical Name: Thunbergia alata ‘Sunny Susy® White Halo’ Common Name: Black-Eyed Susan Vine Hardiness Zone: Grown as an Annual in All Climates Size: 48–72" Tall × 18–24" Spread (Trailing/Climbing) Growth Habit: Vigorous, Trailing, Climbing, Well-Branched Sunlight: Full Sun to Partial Shade Soil: Well-Drained, Fertile Soil Water Needs: Moderate; Drought Tolerant Once Established Bloom Season: Late Spring through Frost Fertilizer: Light, Regular Feeding for Best Flowering Features: Creamy White Blooms with Golden Yellow Centers, Fast Growth, Heat Tolerant, Continuous Blooming Uses: Containers, Hanging Baskets, Trellises, Fences, Obelisks, Mixed Planters Patent: ✔ Patented Propagation: ❌ Propagation Prohibited Without License

More About Thunbergia ‘Sunny Susy® White Halo’

Thunbergia ‘Sunny Susy® White Halo’ brings a fresh, refined look to summer gardens with soft white petals accented by a warm golden-yellow center. The flowers bloom abundantly against lush green foliage, creating a bright, airy appearance that works beautifully in both bold and neutral color palettes.

This variety is part of the Sunny Susy® series, bred for improved branching, stronger flowering, and better garden performance than traditional Black-Eyed Susan vines. Its vigorous trailing and climbing habit makes it especially well-suited for vertical interest, cascading containers, and summer screens.

Why We Like It (Our Trials)

In our trials, ‘Sunny Susy® White Halo’ has impressed us with its speed, consistency, and resilience in hot summer conditions. It establishes quickly, begins flowering early, and continues blooming steadily through heat, humidity, and dry spells with minimal intervention.

We especially like how adaptable it is in design. It climbs eagerly when given support, yet spills gracefully from baskets and containers. The white-and-gold blooms act as a perfect softener alongside brighter annuals and provide contrast that doesn’t fade or scorch in intense sun.

‘Sunny Susy® White Halo’ vs. Other Thunbergia

Compared to standard Thunbergia varieties, the Sunny Susy® series offers stronger branching, more uniform growth, and heavier flower production. ‘White Halo’ stands out for its clean, elegant color and dependable performance across a wide range of light and weather conditions.

For gardeners looking for a fast-growing, heat-loving annual vine with refined color, reliable flowering, and versatile use in containers or vertical spaces, Thunbergia ‘Sunny Susy® White Halo’ is an excellent choice.