Thunbergia, commonly known as Black-eyed Susan Vine, produces vibrant, trumpet-shaped blooms that bring cheerful color to garden beds, trellises, and containers. This heirloom variety is drought-tolerant and easy-to-grow, making it ideal for home gardeners seeking long-lasting, eye-catching flowers that thrive in warm, sunny locations.
Features:
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Thunbergia variety
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Produces vibrant, trumpet-shaped blooms
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Drought-tolerant and low-maintenance
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Ideal for garden beds, trellises, and containers
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Adds long-lasting color to sunny garden areas
Specifications:
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Plant Type: Annual or perennial flowering vine (depending on climate)
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Height: 4–6 feet (vine)
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Bloom Time: Summer to early fall
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Light Requirements: Full sun to partial shade
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Soil Preference: Well-draining garden soil
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Zones: USDA hardiness zones 9–11
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Planting Season: Spring after last frost
Planting & Sowing Instructions:
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Indoor Sowing: Sow seeds in small pots with well-draining soil 6–8 weeks before the last frost. Lightly press seeds into soil and keep moderately moist. Germination typically occurs within 10–14 days.
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Transplanting: Move seedlings outdoors after frost risk has passed. Space plants 12–18 inches apart and provide support for climbing vines.
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Direct Sowing: Sow seeds directly into prepared garden soil in warm climates after the last frost. Cover lightly and water gently.
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Care Tips: Keep soil evenly moist without overwatering. Prune spent blooms and train vines on trellises to encourage continuous flowering. Mulching helps retain soil moisture and regulate soil temperature.
