Overview
Tarenna supra-axillaris subsp. barbertonensis is a species of flowering plant in the coffee family, Rubiaceae. It is native to South Africa and known for its ornamental value.
Common Names
The common names of Tarenna supra-axillaris subsp. barbertonensis are Barberton tarenna and Barberton forest-tarenna.
Appearance
Tarenna supra-axillaris subsp. barbertonensis is an evergreen shrub that can grow up to 4 meters tall. The leaves are opposite, simple, elliptical, and dark green in color. The flowers are small, white, and tubular in shape. They are arranged in compact clusters in the leaf axils. The fruits are small, round, and red when mature.
Uses
The plant has ornamental value and is grown as a hedge or screen in gardens and parks. It is also used in Traditional African Medicine to treat various ailments such as headaches, colds, and fever. Furthermore, the plant is known to have antibacterial and anti-inflammatory properties.
Growth Conditions of Tarenna supra-axillaris subsp. barbertonensis
Light: Tarenna supra-axillaris subsp. barbertonensis requires partial shade to full sun. It can grow under moderate shade but flowering may be reduced compared to plants grown under more light.
Temperature: This plant can tolerate a wide range of temperatures but grows best in warm to hot temperatures. The ideal temperature range for its growth is between 22°C to 28°C. It can also tolerate cooler temperatures but growth may slow down.
Soil: Tarenna supra-axillaris subsp. barbertonensis requires well-draining soil with a pH range between 5.5 and 6.5. This plant can tolerate a variety of soil types including sandy, loamy, and clay soil. However, the soil must be rich in organic matter and nutrients to support its growth.
Water: This plant requires regular watering, especially during the growing season. However, overwatering should be avoided as it can lead to root rot and other fungal diseases. The soil should be allowed to dry slightly between watering intervals.
Fertilizer: Applying a balanced fertilizer to the soil is essential for the optimal growth of Tarenna supra-axillaris subsp. barbertonensis. A slow-release fertilizer applied during the growing season can provide the necessary nutrients for the plant.
Cultivation Methods for Tarenna supra-axillaris subsp. Barbertonensis
Tarenna supra-axillaris subsp. Barbertonensis is a tropical plant that grows best in well-draining soils. It requires partial shade, so planting it under taller trees or in canopy areas is recommended. The plant also prefers humid environments, so misting the leaves regularly or placing a tray of water nearby can help provide the required level of moisture.
Watering Needs for Tarenna Supra-axillaris subsp. Barbertonensis
Tarenna supra-axillaris subsp. Barbertonensis should be watered regularly, ensuring that the soil does not dry out completely between watering. The plant responds well to rainwater or any source of clean and chlorine-free water. It is crucial to avoid overwatering as it can lead to root rot, particularly in stagnant water.
Fertilization for Tarenna Supra-axillaris subsp. Barbertonensis
Tarenna supra-axillaris subsp. Barbertonensis should be fertilized once every month during the growing season, which usually runs from spring to early fall. A balanced water-soluble fertilizer with an NPK ratio of 10:10:10 can be applied to the soil to provide the necessary nutrients the plant requires for optimum growth.
Pruning Tarenna Supra-axillaris subsp. Barbertonensis
Pruning Tarenna supra-axillaris subsp. Barbertonensis is not necessary, but it is sometimes done to promote bushier growth and keep the plant's shape in check. Dead, damaged, or diseased branches should be cut off to prevent the spread of disease. If the plant grows too tall, stems can be trimmed down to reduce the height. Pruning is best carried out at the end of the flowering season.
Propagation of Tarenna supra-axillaris subsp. barbertonensis
Tarenna supra-axillaris subsp. barbertonensis can be propagated by seeds or stem cuttings.
Propagation by seeds
Seeds of Tarenna supra-axillaris subsp. barbertonensis are small and should be sown in a well-draining soil mix. The seeds should be lightly covered with soil and kept moist but not waterlogged. Germination can take up to several weeks to occur.
Propagation by stem cuttings
Stem cuttings of Tarenna supra-axillaris subsp. barbertonensis can be taken from the plant during the growing season. The cuttings should be approximately 10-15 cm long and should have 3-4 leaves. The lower leaves should be removed, and the cuttings should be dipped in a rooting hormone and then planted in a well-draining soil mix. The cuttings should be kept moist and in a shaded area until rooting occurs, which can take up to several weeks.
Disease and Pest Management for Tarenna Supra-Axillaris subsp. Barbertonensis
Tarenna supra-axillaris subsp. barbertonensis is a hardy plant that is relatively resistant to pests and diseases. However, several pests and diseases may affect the plant, leading to reduced growth and yield. Therefore, proper disease and pest management practices are crucial to maintain healthy plants and maximize yield.
Common Diseases
The most common diseases that affect Tarenna supra-axillaris subsp. barbertonensis include:
- Leaf spot: This is a fungal disease that affects the leaves of the plant, causing circular or irregular brown spots. To manage the disease, remove and destroy the infected leaves and use fungicides as directed by a professional.
- Anthracnose: This is another fungal disease that causes yellowing and wilting of the plant leaves, leading to reduced growth. Use preventive fungicide sprays and avoid overcrowding the plants.
- Rust: This disease appears as yellow, orange, or brown spots on the leaves, stems, and occasionally the flowers. Remove and destroy the infected plant parts and use fungicides to manage the disease.
Pest Management
The common pests that affect Tarenna supra-axillaris subsp. barbertonensis include:
- Mealybugs: These pests can cause stunting, yellowing, and wilting of the plant leaves. Use insecticides or natural predators such as ladybugs to manage these pests.
- Aphids: These small insects can cause discoloration and distortion of the leaves. Use insecticidal soap or neem oil to control their population. Introducing beneficial insects like ladybugs and lacewings is also an eco-friendly way to manage these pests.
- Mites: These pests cause yellowing of the leaves and can quickly spread throughout the plant. Use insecticides or natural predators such as predatory mites to manage the pests.
Overall, it is crucial to regularly monitor Tarenna supra-axillaris subsp. barbertonensis for any signs of pests or diseases, and take appropriate measures to manage them to ensure a healthy and productive plant.
