Key Features
- Produces bright flowers with contrasting dark centers and attractive green foliage.
- Vigorous climbing vine that can cover trellises, fences, arches, and other supports.
- Performs best in full sun to partial shade with well-drained soil.
- Useful for containers, hanging baskets, vertical gardens, and cottage-style landscapes.
- Creates colorful seasonal coverage with a twining growth habit.
Growing Benefits
- Adds vertical color to fences, trellises, and garden structures.
- Excellent for creating privacy and filling empty vertical spaces.
- Suitable for containers and hanging baskets when given adequate support.
- Long flowering periods can provide seasonal garden interest in warm conditions.
- Easy to train along supports as the young vines develop.
Seed Specifications
- Common Name: Black-Eyed Susan Vine
- Botanical Name: Thunbergia alata
- Plant Type: Tender perennial vine, commonly grown as an annual
- Colors: Yellow, orange, white, or apricot flowers with dark centers, depending on variety
- Height: Approximately three to eight feet or more with suitable support
- Sunlight: Full sun to partial shade
- Soil: Well-drained, fertile soil
- Water: Moderate and consistent
- Germination Time: Approximately ten to twenty-one days under favorable conditions
- Sowing Depth: Approximately one-quarter inch
- Spacing: Approximately twelve to eighteen inches
- Growing Zones: USDA Zones ten through eleven as a perennial; grown as an annual in cooler zones
- Flowering/Maturity: Generally flowers from summer into fall in suitable conditions
- Uses: Trellises, fences, arches, containers, hanging baskets, vertical gardens, and cottage gardens
Growing Tips
- Soak seeds in warm water for several hours before sowing to help soften the seed coat.
- Provide a sturdy trellis, fence, or other support for climbing growth.
- Keep soil evenly moist while seeds are germinating and young plants are establishing.
- Pinch growing tips when needed to encourage fuller, bushier growth.
Seed Storage
Store unused seeds in a cool, dry, dark location. Keep them in their original packet or an airtight container protected from moisture, heat, and direct sunlight.
Unique Facts About Seeds
- Black-Eyed Susan Vine belongs to the genus Thunbergia and is not closely related to the Black-Eyed Susan flower Rudbeckia hirta.
- The vine gets its common name from the dark central eye found on many of its flowers.
- Thunbergia alata is a twining climber that naturally uses nearby structures for support.
- The plant is native to parts of eastern Africa but is widely cultivated as an ornamental vine.