Black-Eyed Susan Vine Seeds – Thunbergia Alata

Black-Eyed Susan Vine (Thunbergia alata) is a fast-growing, twining annual vine known for its bright, cheerful blooms featuring vibrant petals surrounding a dark central eye. This ornamental plant adds a striking display to fences, trellises, hanging baskets, and garden walls. With its continuous flowering habit and easy maintenance, the Black-Eyed Susan Vine is perfect for creating colorful vertical accents throughout the warm growing season.

Features:

• Produces abundant, bright yellow to orange flowers with dark centers.

• Vigorous climbing vine ideal for trellises, fences, or hanging containers.

• Continuous blooms from late spring through fall.

• Thrives in full sun and warm conditions.

• Attracts butterflies and pollinators.

• Easy to grow and maintain with minimal care.

Specifications:

• Scientific Name: Thunbergia alata

• Common Name (US): Black-Eyed Susan Vine

• Plant Type: Annual (perennial in frost-free areas)

• Growth Habit: Climbing or trailing vine

• Bloom Color: Yellow, orange, white, or cream with dark centers

• Bloom Period: Late spring to early fall

• Plant Height: 5–8 feet (1.5–2.5 meters)

• Sunlight Requirement: Full sun to partial shade

• Soil Type: Well-drained, fertile soil

• Watering: Moderate; keep soil evenly moist but not soggy

• Germination Time: 10–20 days

• Days to Bloom: 80–90 days after sowing

• Sowing Method: Start indoors 6–8 weeks before last frost or direct sow after frost danger has passed

• Spacing: 8–12 inches apart

• Growing Season: Spring through Fall

• USDA Hardiness Zones: 9–11 (grown as annual in cooler zones)

• Best Planting Months (by Zone):

  • Zones 3–5: May to June

  • Zones 6–8: April to May

  • Zones 9–11: February to April

• Uses: Fences, trellises, arbors, hanging baskets, balcony decoration