Thunbergia alata Seeds (Black Eyed Susan)

Black Eyed Susan (Thunbergia alata), also known as “Black-Eyed Susan Vine,” is a flowering plant native to Eastern Africa. It features vibrant, trumpet-shaped flowers with dark centers, blooming in shades of yellow, orange, and white. This climbing plant can reach a mature height of 6 to 8 feet, making it ideal for adding vertical interest to landscapes and trellises. Black Eyed Susan thrives in USDA hardiness zones 9 to 11 and can be grown from Thunbergia alata seeds, which are readily available for gardeners to cultivate this attractive and versatile species.

Growing Thunbergia alata from Seed

• Growth cycle: Annual
• Watering: Medium
• Sunlight: Medium Sun
• Suitable climates: Arid, Highland, Humid Continental, Humid Subtropical, Marine West Coast, Mediterranean, Semiarid, Subarctic, Tropical Wet, Tropical Wet & Dry
• Where to grow: Indoor & Outdoors
• Flower color: Orange

Germinating Black Eyed Susan Flower Seeds

To germinate Thunbergia alata, plant the seeds in a well-draining soil, cover with a thin layer of soil, keep it consistently moist, and provide indirect sunlight. Germination typically occurs within a period of 2 to 3 weeks.

We source all of our Thunbergia alata seeds from a small greenhouse facility based in southeastern Maine and store them in a dark, temperature-controlled environment before shipment. You’ll find that our fresh Black Eyed Susan seeds are much easier to germinate than the mass-produced packets of flower seeds found in stores! If you have any trouble growing Black Eyed Susan seeds, we’re happy to send you additional gardening tips. In the (unlikely) event that your Thunbergia alata seeds do not germinate at all, we’ll give you a full refund, no questions asked.

We offer this variety on Etsy and eBay, as well!

Shipping & returns

Our complete shipping and return policies are available right here. Get free shipping on your order by adding additional seed packets to your cart!