Origin
Thunbergia angolensis S.Moore, also known as the Angolan clock vine, is a species of flowering plant in the family Acanthaceae. It is native to Angola and South Africa.
Common Names
Aside from Angolan clock vine, Thunbergia angolensis is also known by a variety of different common names, including banana bush, Cape thunbergia, Cape clock vine, and dune thunbergia.
Uses
Thunbergia angolensis is used extensively in traditional African medicine to treat a wide range of ailments such as fever, diarrhoea, and stomach cramps. The plant contains many medicinal properties such as anti-inflammatory and antibacterial agents.
It is also commonly grown as an ornamental plant in gardens and parks because of its stunning large velvety green leaves with a prominent white vein that adds to its glamour. The plant's exotic appearance and striking beauty make it an attractive addition to any garden or indoor decor.
General Appearance
Thunbergia angolensis typically grows up to 4 metres in height, often growing shrubby branches. The leaves are large and velvety, with a distinctive white vein running down the center. The flowers are tubular and orange, with a black center, and bloom in the summer. Fruits are small and rounded, containing lots of small rounded seeds and are typically black or dark brown in colour.
Light Requirements
Thunbergia angolensis is a sun-loving plant and requires plenty of direct sunlight to thrive. Therefore, it is recommended to place the plant in an area where it can receive at least six hours of sunlight per day. Insufficient light may result in stunted growth and reduced flowering.
Temperature Requirements
Thunbergia angolensis is a warm-loving plant that cannot tolerate frost or extreme cold conditions. It grows well in temperatures between 65°F and 80°F. In colder temperatures, it may go into dormancy, and growth may slow down. At the same time, high temperatures may cause heat stress to the plant.
Soil Requirements
Thunbergia angolensis prefers well-draining soil that is rich in organic matter. The ideal pH range for the plant is between 6.0 and 7.5. It is essential to ensure that the soil does not become waterlogged as it may cause root rot. A good way to improve the soil drainage is by adding perlite, sand, or gravel to the soil mix.
Cultivation methods
Thunbergia angolensis S.Moore, also known as Angolan Sky Flower, is native to Africa and primarily grows in tropical and subtropical regions. This plant prefers warm temperatures and a well-draining soil mix with a slightly acidic pH between 5.5 and 6.5. Plant the seeds or cuttings in early spring or summer, and ensure that the soil is consistently moist until the plant becomes established.
Watering needs
Angolan Sky Flower needs regular watering to promote healthy growth. However, it is essential not to overwater the plant as this could lead to root rot. Keep the soil consistently moist but not waterlogged, and monitor the plant for signs of dehydration such as wilting or weak stems. During the growing season, water the plant once a week or whenever the top layer of soil feels dry to the touch. In winter, reduce watering frequency.
Fertilization
Feeding Angolan Sky Flower with a balanced, water-soluble fertilizer every two weeks during the active growing season promotes optimal growth and flowering. Avoid fertilizing during the dormant season, as this may cause the plant to become stressed or damaged.
Pruning
In general, Thunbergia angolensis S.Moore does not require extensive pruning. However, trimming back the stems after blooming can help to promote bushier growth and improve the overall appearance of the plant. This plant is a climbing vine, so it would be best to provide some support. Regularly pruning the plant to control its growth, especially in small gardens or indoor spaces, is also essential.
Propagation of Thunbergia angolensis S.Moore
Thunbergia angolensis S.Moore, commonly known as the Angola black-eyed Susan or the African clock vine, is a flowering plant native to Africa. Propagation of this plant can be done through various methods including seed propagation and vegetative propagation.
Seed Propagation
Seed propagation is a common method used to propagate Thunbergia angolensis S.Moore. To propagate using seeds, the seeds should be collected from the matured fruits when they turn brown. The seeds should be cleaned and stored in a dry place. Before planting, the seeds can be soaked in warm water for about 24 hours to increase their germination rate.
The seeds can be planted in a well-draining soil mix, preferably with peat moss or perlite added for better drainage. The depth of planting should be shallow, just enough to cover the seeds with soil. Water the seeds regularly and keep the soil moist until the seeds germinate, which will take about 2-4 weeks.
Vegetative Propagation
Vegetative propagation of Thunbergia angolensis S.Moore involves using stem cuttings or root division. Stem cuttings can be taken from the parent plant during the growing season and should be about 10-15 cm long. The leaves on the lower part of the cutting should be removed and the cutting should be dipped in rooting hormone before planting. Plant the cutting in a well-draining soil mix, and keep the soil moist. Roots will start to grow within 2-3 weeks.
To propagate through root division, the parent plant should be dug up and gently pulled apart at the roots. Each division should have some healthy roots and shoots. The divided plants can then be planted in separate pots or directly in the ground.
Propagation of Thunbergia angolensis S.Moore is relatively easy and can be achieved through both seed and vegetative propagation methods.
Disease and Pest Management for Thunbergia angolensis S.Moore
Thunbergia angolensis S.Moore is a hardy perennial plant that doesn't require much maintenance. However, there are a few diseases and pests that can affect this plant. Here are some of the most common ones and how to manage them:
Diseases
Leaf Spots: This fungal disease causes circular or irregular black, brown, or yellow spots on the leaves of the plant. To manage this disease, remove the affected leaves and ensure proper airflow and drainage around the plant. Avoid watering the plant in the evening to prevent moisture from settling on the leaves.
Canker: This bacterial infection causes sunken, brownish stems with discolored leaves. To manage canker, prune affected stems well below the infected area. Sterilize your pruning tools in between cuts to prevent spreading the infection.
Pests
Aphids: These small insects suck the sap from the plant causing it to wilt, deform and yellow. To manage aphids, spray the plant with insecticidal soap or neem oil. Encourage natural predators such as ladybugs and lacewings or weevils to eat the aphids.
Spider Mites: These pests are tiny and are usually not visible until a cobweb-like substance appears on the plant's underside. To manage spider mites, spray the plant with a strong blast of water to remove them, and also mist the plant once a week. Keep the plant in a humid area to discourage spider mites. Alternatively, you can spray an insecticidal soap to kill them off.
By following these disease and pest management practices, you can keep your Thunbergia angolensis S.Moore plant healthy and thriving.
