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Product Description
Bring vibrant color and charm to your garden with Mixed Thunbergia flowers, producing bright, trumpet-shaped blooms in a variety of striking colors. These heirloom seeds are ideal for trellises, fences, containers, and hanging baskets, offering low-maintenance, long-lasting floral beauty for home gardeners.
Plant Type: Annual or perennial climbing flowering plant
Bloom Color: Mixed bright colors (yellow, orange, white, blue, and purple)
Growth Habit: Trailing or climbing
Height/Spread: Up to 6 – 10 feet (supports required for climbing varieties)
Light Requirement: Full sun to partial shade
Soil Preference: Well-drained, fertile soil
Garden Use: Trellises, fences, containers, hanging baskets, and ornamental displays
Seed Type: Open-pollinated, heirloom, non-GMO
Special Traits: Bright blooms, low-maintenance, long-lasting, attracts pollinators
Sowing Time: Sow indoors 6 – 8 weeks before the last frost or outdoors after frost risk has passed.
Seed Depth: Lightly cover seeds with 1/8 inch of soil; soaking seeds overnight may improve germination.
Spacing: Space seedlings 12 – 18 inches apart; provide supports for climbing varieties.
Watering: Keep soil lightly moist during germination; water moderately once seedlings are established.
Germination Period: 10 – 20 days under warm, bright conditions.
Maintenance: Trim lightly to control growth; deadhead spent flowers to encourage continuous blooming.

Life Cycle
Annual climbing vine
Planting Season
Warm season
Growth Habit
Fast-growing twining climber
Flavor Profile
Not applicable
Plant Characteristics
Bright multi-colored trumpet-shaped blooms with dark centers and lush green foliage
Use
Trellises, fences, hanging baskets, containers
Growing Conditions
Well-drained soils with good sunlight exposure
Harvest Advantages
Continuous blooming with vibrant climbing display
Plant Resistance
Heat tolerant, adaptable, low maintenance
Scientific Name: Thunbergia alata
Seed Names
Mixed Thunbergia Seeds
Seed Type
Heirloom open-pollinated
Mixed Thunbergia, commonly known as Black-Eyed Susan Vine, is admired for its cheerful trumpet-shaped blooms and climbing habit. Thriving in sunny garden spaces, this heirloom variety produces colorful flowers that brighten trellises and fences throughout the season. Its easy-care nature and vibrant display make it a beautiful addition to home garden landscapes.
Light Requirement
Full sun to partial shade
Planting Depth
¼–½ inch
Sowing Method
Start indoors 6–8 weeks before last frost or direct sow outdoors
Plant Spacing
12–18 inches
Days to Maturity
70–90 days
Soil Preparation
Soak seeds in warm water for 12 hours before sowing
Hardiness Zones
USDA 9–11
Water Needs
Moderate moisture; well-drained soil
Planting Season
Spring / Early Summer
Seed Count
Recommended Coverage
100
Up to 20 sq ft
500
Up to 40 sq ft
1000
Up to 200 sq ft