Black-eyed Susan Profile

Written by Maggie

Oct 28 2021

Black-eyed Susan Profile

Black-eyed Susan Vine got her name from her famous Black heart. Black-eyed Susan Vine, scientific name Thunbergia alata, is a perennial vine, and can be an annual cultivation, originally produced in equatorial Africa. 

Black-eyed Susan Picture

Black-eyed Susan Vine

Characteristics of Black-eyed Susan

Black-eyed Susan vine (Thunbergia alata) is a semi-hardy annual or perennial climbing plant native to South Africa. It is noted for its showy tubular flowers with flat, disc-shaped petals. Black-eyed Susan Vine can climb up to 3 meters. It has opposite, rhomboid, heart-shaped leaves, small green leaves, coarsely serrated edges, and winged petioles .Flowers are single in leaf axils, flower diameter up to 3-5 cm, the throat center for purple black round big spots, like an eye structure, corolla flat, color is a variety of shades of light yellow and orange red, very beautiful and eye-dazzling. Black-eyed Susan vine (Thunbergia alata) has orange flowers in summer with Black eyes at the center. Black-eyed Susan Vine can be guided to climb the vine; growth can also lean against the fence wall planting.  

Black-eyed Susan vine (Thunbergia alata) likes a warm, wet and sunny environment. Black-eyed Susan Vine suitable temperature for growth is 20-30C. Cold resistance 9℃, avoid cold. Twine annual herbs. Petiole winged, pubescent. The Blade of Black-eyed Susan Vine is ovate-arroticate or ovate-slightly halberate, apex acute, base-arroticate or slightly halberate, margin shortly dentate or entire. Flowers of Black-eyed Susan Vine are unripe leaf axils, conical bell - shaped, corolla 5 - crack, yellow or pale yellow eaves, purple black throat.Capsule. Flowering period from summer to autumn.

Habits of Black-eyed Susan

Black-eyed Susan Vine (Thunbergia alata) is suitable for the area with the lowest temperature of 4.5-10℃ in winter. Black-eyed Susan Vine (Thunbergia alata) is suitable for hanging baskets plant or climbing pergola.

Black-eyed Susan Vine

How to Grow & care for Black-eyed Susan


Black-eyed Susan vine (Thunbergia alata) likes to grow in warm and humid environments, and likes to grow in sunny environments. The best growth temperature of Black-eyed Susan vine is between 20 ° C and 30 ° C. Black-eyed Susan vine is not hardy to cold, and once the temperature reaches below 7 ° C, it is difficult to maintain normal growth.


Black-eyed Susan vine is a plant that likes fertilizer very much. Once it has begun to grow, it is heavily fertilized to help it bloom.


The growing soil of black-eyed Susan vine should be rich in nutrients. Suitable fertilizer can be used as base fertilizer, which can be replenished continuously in the breeding process. Regular fertilization will be more conducive to the growth of plants.


Black-eyed Susan vine is not drought tolerant, so it is important to water the plant as soon as possible, and to spray it with water in the summer to maintain humidity in the environment.


The core of Black-eyed Susan Vine can be plucked at the right time, leading to branching, and the stem can be trimmed promptly after flowering.

Black-eyed Susan Propagation

Black-eyed Susan Vine propagates by cutting or sowing. Sown plants grow more exuberantly than cuttings. 

Under the condition of night temperature higher than 15.5℃ and sufficient sunshine in winter, Black-eyed Susan Vine (Thunbergia alata) can flower all year round.

Black-eyed Susan Vine

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