Outsidepride 100 Seeds Annual Yellow Thunbergia Black-Eyed Susan Vine Flower Seed for Planting
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About This Item
Thunbergia alata is commonly known as Black-Eyed Susan Vine. This variety it called Sunrise Yellow, and it has bright yellow 5-petaled blooms. The foliage is lush, and the blooms are thick, making this a favorite for many gardeners. It is a vine, so provide a trellis or fence for it to climb.
Thunbergia is an annual climbing vine reaching 60 - 84 inches and grows across the country in USDA zones 3 - 10.
It is recommended to soak the Thunbergia seed in warm water over night. Sow the seed directly outdoors after frost danger has passed. Place 3 seeds per plant 8 inches apart and cover ¼ inch deep with soil. Keep the seed moist until germination occurs.
With a temperature range of 75 – 85F, germination is usually within 21 days. Grow Black-Eyed Susan Vine in full sun and in rich, well-drained soil.
Pinch the tips back to encourage branching. In frost-free regions, Thunbergia will grow as a tender perennial. When it is grown as a perennial, it can reach 20 feet. Annuals usually reach 8 feet.
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