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Black-eyed susan vine
Also known as: Clock vine
Black-eyed susan vine (Thunbergia alata) is a vine species native to southern Asia, Madagascar, and Africa. This plant is called black-eyed susan vine because its blossoms resemble the black-eyed Susan. Both plants have bright yellow petals and black centers. Black-eyed susan vine is widely cultivated as an ornamental plant.
Scientific classification
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Perennial, Annual
Lifespan
Vine, Herb
Plant Type
Green
Leaf Color
3 cm
Flower Size
Cream, Brown, Tan
Fruit Color
Orange, Yellow, White, Gold, Pink, Red
Flower Color
Green, Yellow, Orange
Stem Color
Non-dormant
Dormancy
Evergreen
Leaf type
20 - 38 ℃
Ideal Temperature
Spring, Fall
Growth Season

Images of Black-eyed susan vine

Distribution of Black-eyed susan vine

Distribution Map
Black-eyed susan vine is native to southern Africa. It is found in disturbed ground, wetlands, and forest margins. It has been introduced to Asia, Australia, and North & South America. Black-eyed susan vine is invasive in southeast Asia, Oceania, and South America.
Native
Cultivated
Invasive
Introduced
No species reported
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Habitat
Gardens, hanging baskets
Hemisphere Trend Curve
Flowering
Fruiting

Culture

Garden Use
Black-eyed susan vine is a perennial that you will often see used in hanging baskets, which show off its long, trailing vines. In cottage, tropical, and ornamental gardens, it will ramble over the ground if left unstaked, or it can be trained to grow on walls, trellis, or other structures. Some gardeners will mix it with a contrasting vine, like morning glory or purple passionflower.
Symbolism
Intoxicating,
Interesting Facts
This bright and cheery vine can be grown indoors or outdoors. In colder climates, it will only grow outdoors as an annual. This vining flower can grow into long vines and does best when trellised or given some sort of support. It needs warm temperatures and a little shelter from the hottest rays of the sun.
Name Story
Black-eyed susan vine: The name "Black-eyed Susan" is thought to have come from a character that appeared in many traditional ballads and songs. It is a climbing plant and the center of the flower is brownish-black colored like a pair of focused eyes. Therefore, it is commonly called Black-eyed Susan vine.
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Cultivars

There are several recognized cultivars of Black-eyed susan vine, including the following common varieties :

Quickly Identify Black-eyed susan vine

1
Orange tubular flowers with dark purple-black throats
2
Triangular leaves with winged petioles
3
Star-shaped flowers with squarish to obovate petals
4
Fruits with spherical shape and elongated bird-like beak
5
Soft, hairy leaves with toothed edges and pale undersides
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Care Guide for Black-eyed susan vine

Every week
Water
Full sun
Sunlight
20 - 38 ℃
Ideal Temperature
Garden Soil
Soil Type
Water: Originating from Eastern Africa, black-eyed susan vine thrives in tropical climates with consistent moisture. It prefers weekly hydration and shows moderate drought tolerance. As an evergreen climber, it requires well-draining soil to support its lush foliage and blooms while avoiding waterlogging.
Fertilize: Black-eyed susan vine requires regular high-phosphorus fertilization every two to three weeks during the growing season for optimal blooming. In cooler months, reduce frequency. Over-fertilizing can be harmful, so follow recommended doses. Liquid fertilizers are preferred for their immediate availability. Monitor black-eyed susan vine's response to adjust care practices.
Pruning: Black-eyed susan vine features vibrant heart-shaped leaves and tubular flowers, benefiting from regular pruning in late winter or early spring. Prune for improved growth, flowering, and air circulation. Disinfect tools to prevent disease and encourage a bushier plant.
Propagation: Black-eyed susan vine is easily propagated through herbaceous cuttings in Spring and Summer, with minimal difficulty. Successful propagation is indicated by visible roots and new growth. Recommended practices include using a rooting hormone and ensuring consistent moisture for optimal results.
Repotting: Repot black-eyed susan vine in early spring every 2-3 years using a larger pot with vertical support. Provide bright, indirect light and consistent watering post-repotting to promote recovery. Handle black-eyed susan vine carefully, as its winding vines are both appealing and susceptible.
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