Description
Black Eyed Susan Vine Thunbergia Seeds 6270.
Charming Twining Climber with Bright Black-Centred Blooms.
Black Eyed Susan Vine (Thunbergia alata) is a delightfully versatile open-pollinated annual vine celebrated for its continuous display of bright yellow, warm orange, and crisp white flowers—each dramatically accented by a deep black central eye. Fast-growing and self-twining, its slender stems reach up to 2 m in height, making it ideal for training up garden trellises, fences, and obelisks, or cascading gracefully from hanging baskets, window boxes, and patio containers. Thriving in sunny locations with light afternoon shade, this heavy-blooming vine offers continuous, colourful charm from mid-summer until autumn frosts.
Quick Seed Details
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Product Code: 6270
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Botanical Name: Thunbergia alata
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Type: Open-Pollinated Annual Vine
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Height / Length: Up to 2 m
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Light Requirement: Full Sun to Partial Shade (Appreciates afternoon shade in hot summers)
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Soil Preference: Rich, moist, well-drained soil
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Germination: 10–14 days at 24°C (Pre-soaking seeds required)
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Seed Count: Approx. 25 seeds per packet (40 seeds per gram)
What you need to know to Plant & Grow
Thunbergia seeds have a firm seed coat and benefit greatly from pre-soaking prior to sowing.
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Seed Preparation: Soak seeds overnight in room-temperature water before indoor sowing, or wrap in a wet paper towel for several days before direct outdoor sowing.
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Indoor Sowing: Start pre-soaked seeds indoors in peat pots or Jiffy 7s to protect tender roots. Maintain a temperature of 24°C throughout the 10 to 14 day germination window. Move sprouted seedlings under grow lights at a cooler temperature of 20°C before hardening off and transplanting outdoors after all danger of spring frost has passed.
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Outdoor Direct Sowing: Direct sow pre-soaked seeds outdoors in late May once soil has warmed thoroughly.
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Garden Care & Feeding: Plant in rich, well-drained soil in full sun or light shade. Keep soil evenly watered and feed every 2 to 3 weeks with a water-soluble plant food (such as 20-20-20 or 15-30-15) throughout the summer to encourage non-stop flowering.
Why Black Eyed Susan Vine Seeds belong in Your Garden
If you want an effortless climbing or cascading vine packed with bright, black-centred blossoms, Thunbergia is an irreplaceable favourite. Its fast growth, adaptable twining habit, and exceptional performance in vertical gardens and hanging baskets make it a standout annual feature for Canadian outdoor living spaces.
