Origin and Common Names
Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris, also commonly known as "Leteketke" or "Cinnamon bush", is a tropical plant species belonging to the family of Rubiaceae. It is native to Southeast Asia, particularly in the countries of Thailand, Indonesia, and Malaysia.General Appearance
Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris is a shrub that can grow up to 2 meters tall with a stem diameter of about 2 cm. Its bark is grayish-brown with vertical stripes and can be easily peeled off. The leaves are oblong-elliptic, 12-18 cm long, and 4-8 cm wide, with a smooth, shiny surface and a dark green color. The flowers are small and white with a pleasant scent and grow in clusters at the apex of branches.Uses
In traditional medicine, various parts of Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris such as the bark, leaves, and roots have been used to treat a variety of ailments. The leaves are traditionally used to alleviate symptoms of fever, influenza, and cough, while the bark is used as an anti-inflammatory and analgesic. Additionally, the roots are used to treat rheumatism and other joint pains. Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris is also used as an ornamental plant in landscaping due to its attractive features, including its shiny leaves and fragrant flowers. It is often planted in parks, gardens, and along roadways, especially in Southeast Asia. Overall, Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris is a versatile plant species that not only serves as a medicinal herb but also enhances the beauty of the environment it is planted in.Light Requirements
Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris requires partial to full sunlight for optimal growth. It can tolerate shade but may not flower as well in dimly lit areas. When grown indoors, it is best to place the plant near a bright window.
Temperature Requirements
The plant prefers warm to hot temperatures and cannot survive in frost-prone areas. It grows well in tropical and subtropical climates with temperatures ranging from 16 to 32 degrees Celsius. If temperatures drop below 10 degrees Celsius, the plant may suffer from frost damage.
Soil Requirements
Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris thrives in well-draining, acidic soil with a pH of 5.5 to 6.5. It requires soil that is rich in organic matter and should be fertilized regularly to promote growth. It can grow in a variety of soils, including sandy loam, clay loam, and red earth, as long as it receives adequate nutrients and drainage.
Cultivation
Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris is native to Southeast Asia, particularly in Thailand, Laos, and Vietnam. It is commonly found in forests and along streams and rivers. If you are planning to cultivate this plant, it is important to recreate its natural habitat as much as possible. This plant thrives in moist and shady environments, so make sure to provide enough water and shade.
Choose a spot in your garden that gets partial to full shade. Prepare the soil by digging a hole twice the size of the plant's container. Mix the removed soil with compost or organic matter to improve drainage and fertility. Plant the Tarenna supra-axillaris at the same depth as its previous container.
Watering Needs
Tarenna supra-axillaris needs regular watering to keep the soil moist. However, overwatering can cause root rot and other fungal diseases. Water the plant deeply once or twice a week, depending on the weather and soil conditions. Check the soil moisture level by sticking your finger 1-2 inches deep into the soil. If it feels dry, it's time to water.
During hot and dry periods, you may need to water more frequently. Mulching can also help retain moisture and prevent the soil from drying out quickly. Spread a layer of organic mulch around the plant, avoiding direct contact with the stem.
Fertilization
Tarenna supra-axillaris does not require frequent fertilization. However, you can give it a boost of nutrients during the growing season to promote healthy growth and flowering. Use a balanced slow-release fertilizer once every two months. Alternatively, you can apply compost or aged manure around the base of the plant. Avoid applying too much fertilizer, as it can burn the roots or cause excessive growth.
Pruning
Tarenna supra-axillaris does not require extensive pruning. However, you can trim back any dead, diseased, or damaged branches to maintain the plant's shape and health. You can also prune lightly after the plant has finished flowering to stimulate new growth and branching.
Propagation of Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris
Tarenna supra-axillaris (Hemsl.) Bremek. var. supra-axillaris, commonly known as the forest lantern, is a shrub commonly found in subtropical and tropical regions of Asia. The plant propagates through two main methods:
Seed Propagation
Propagation of Tarenna supra-axillaris can be achieved by seeds. Matured fruits collected from the plant should be first cleaned and dried before use. After drying, the seeds can be sowed any time of the year. To improve germination rate, the seeds should be soaked in cold water for a few hours before planting. The seeds should be ideally planted in well-drained soil and kept moist to support proper root growth. The time for germination varies between 3-4 weeks, and it takes around six months for the seedlings to develop into saplings.
Vegatative Propagation
Another method of propagating Tarenna supra-axillaris is through vegetative cuttings. Cuttings can be taken from mature plants, and they should be around 10-15 cm in length. The cuttings should be treated with a rooting hormone before planting. It is best to plant the cuttings during the rainy season to ensure sufficient moisture for growth. The cuttings should be planted in well-drained soil and kept moist for several weeks. It takes around eight to ten weeks for roots to develop and new growth to emerge.
Disease Management
Tarenna supra-axillaris is typically a healthy plant and is not known to suffer from many diseases. However, certain fungal diseases like powdery mildew and leaf spot can cause problems for the plant. These diseases are usually caused by excess moisture and poor air circulation.
To manage powdery mildew and leaf spot, it is essential to maintain good air circulation by pruning the plant to allow light and air to penetrate the foliage. Avoid watering the plant from overhead, as this can increase moisture levels. Use a fungicide to help control the diseases.
Pest Management
Tarenna supra-axillaris is also relatively pest-resistant. However, some sap-sucking insects like aphids and mealybugs can infest the plant and cause damage. Aphids can cause stunted growth and distortion of new leaves, while mealybugs can produce honeydew and sooty mold.
To manage these pests, use insecticidal soap or neem oil to control their population. Introducing beneficial insects like ladybirds and lacewings can also help keep these pests at bay. Regular pruning and inspection of the plant can also help in early detection of these insects before they cause significant damage.
