Bright Yellow Flowers
Produces cheerful yellow to golden-orange flowers, usually with contrasting dark centers.
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Yellow Black Eyed Susan Vine, botanically known as Thunbergia alata, is a flowering climbing vine recognized for its bright yellow to golden-orange flowers with dark centers. This fast-growing ornamental plant can add vertical color to trellises, fences, hanging baskets, and garden structures. It grows well in warm conditions with suitable sunlight, well-drained soil, and regular watering.
Produces cheerful yellow to golden-orange flowers, usually with contrasting dark centers.
Twining stems climb suitable supports, making the vine useful for trellises, fences, and garden arches.
Grows actively in warm weather and can be grown as an annual in cooler climates.
Suitable for garden beds, containers, hanging baskets, and vertical planting displays with adequate support.
| Scientific Name | Thunbergia alata |
| Common Name | Black-Eyed Susan Vine, Clock Vine |
| Plant Family | Acanthaceae |
| Seed Type | Flower Seeds |
| Flower Variety | Yellow Black-Eyed Susan Vine |
| Growth Habit | Climbing or trailing flowering vine |
| Flower Color | Yellow to golden-orange, typically with a dark center |
| USDA Hardiness Zones | Generally perennial in Zones 10–11; grown as an annual in cooler regions |
| Planting Season | Spring to early summer after frost in cooler climates; timing varies in warm regions |
| Sowing Months | Late winter to spring indoors, or after frost outdoors, depending on climate |
| Germination Time | Approximately 10–21 days under suitable conditions |
| Germination Temperature | Approximately 21–27°C (70–80°F) |
| Sunlight Requirements | Full sun to partial shade |
| Soil Requirements | Fertile, well-drained soil with adequate organic matter |
| Watering | Water regularly to maintain even soil moisture without waterlogging |
| Support Requirements | Trellis, fence, strings, or another suitable climbing structure |
| Mature Vine Length | Often approximately 1.8–2.4 m (6–8 ft), depending on growing conditions |
| Plant Spacing | Approximately 30–45 cm (12–18 inches), adjusted for the support and growing space |
Yellow Black Eyed Susan Vine Seeds can grow into a climbing plant with bright flowers and contrasting dark centers. Give the vine suitable support, warm temperatures, well-drained soil, and consistent moisture to encourage healthy growth and flowering in garden beds, containers, and vertical displays.
Find answers to common questions about growing yellow Black-Eyed Susan Vine, encouraging flowering, and choosing suitable garden supports.
Sow Yellow Black Eyed Susan Vine seeds in a warm, well-drained growing medium about 0.5–1 cm (¼–½ inch) deep. Maintain temperatures around 21–27°C (70–80°F) and keep the medium evenly moist. Germination often takes 10–21 days. Transplant seedlings outdoors after the danger of frost has passed.
A trellis is not essential, but it helps Yellow Black Eyed Susan Vine climb and display its flowers vertically. You can also grow it along a fence, garden arch, or strings. In hanging baskets and raised containers, its trailing stems can spill over the edges.
Excess shade, too much nitrogen fertilizer, unsuitable temperatures, or an immature plant can delay flowering. Provide adequate sunlight, avoid excessive nitrogen, maintain even soil moisture, and allow the vine time to establish. Flowering also depends on the variety and local growing conditions.