Key Features
- Produces cheerful flowers with contrasting dark centers and lush green foliage.
- Vigorous twining vine that climbs naturally around trellises, fences, and garden supports.
- Ideal for pollinator gardens, containers, hanging baskets, arches, and vertical displays.
- Performs best in full sun to partial shade with fertile, well-drained soil.
- Provides colorful seasonal blooms and attractive vertical garden coverage.
Growing Benefits
- Adds vibrant color and vertical interest to garden spaces.
- Flowers can attract bees, butterflies, and other visiting pollinators.
- Excellent for covering trellises, fences, arches, and other garden structures.
- Works well in containers and hanging baskets with suitable support.
- Easy to train and shape as the vine develops.
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, and apricot shades depending on variety
- Height: Approximately three to eight feet or more with suitable support
- Sunlight: Full sun to partial shade
- Soil: Fertile, well-drained 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; commonly grown as an annual in cooler zones
- Flowering/Maturity: Generally flowers from summer through fall in favorable warm conditions
- Uses: Pollinator gardens, trellises, fences, arches, containers, hanging baskets, and vertical gardens
Growing Tips
- Soak seeds in warm water for several hours before planting to help soften the seed coat.
- Provide a sturdy support structure before the vines become large.
- Keep soil evenly moist during germination and early growth.
- Pinch growing tips occasionally to encourage fuller branching and more compact growth.
Seed Storage
Store unused seeds in a cool, dry, dark place. Keep them in their original packet or an airtight container away from moisture, heat, and direct sunlight.
Unique Facts About Seeds
- Black-Eyed Susan Vine is Thunbergia alata, while Black-Eyed Susan is a completely different plant, Rudbeckia hirta.
- The vine's common name comes from the dark center that contrasts with its colorful petals.
- Thunbergia alata is a twining plant that uses nearby structures for climbing support.
- Its flowers can provide nectar for visiting bees, butterflies, and other insects.