Introduction
Coleus praetermissus Bullock & Killick is a plant species that belongs to the family Lamiaceae. It is a small shrub that is widely distributed in the tropical and subtropical regions of Southeast Asia, including Indonesia, Malaysia, and Thailand.Common Names
The plant is commonly referred to as "Purple Ají", "Sanggara", or "Blue Angel". It is also known locally in Indonesia as "Ceplikan" and in Malaysia as "Daun Keembong".General Appearance
The plant is a small shrub that can grow up to 60 cm tall. It has stout, square stems that are covered with fine hairs. Its leaves are ovate in shape and have a distinct purple or green coloration with red veins. The plant produces small, tubular flowers that are usually arranged in clusters.Uses
The leaves of Coleus praetermissus are used for medicinal purposes in traditional medicine. They are believed to have anti-inflammatory, anti-bacterial, and analgesic properties. The plant is also often used as an ornamental plant due to its attractive foliage and vibrant coloration. In addition, some parts of the plant are used as a natural dye for textiles. In conclusion, Coleus praetermissus Bullock & Killick is a unique and interesting plant with various uses. It is widely distributed in Southeast Asia, and its colorful leaves make it a popular choice for both traditional medicine and ornamental purposes.Light Requirements
Coleus praetermissus thrives in partial or full shades. It requires at least 4-6 hours of indirect sunlight per day. Direct sunlight can burn the leaves and cause the plant to wither.
Temperature Requirements
The plant grows best in warm temperatures between 60 and 85 °F (15 and 29 °C). It struggles in cold temperatures below 50 °F (10 °C) and may die if exposed to frost. Therefore, it is crucial to keep the plant in a warm environment, especially during the winter season.
Soil Requirements
The ideal soil for Coleus praetermissus is rich, well-drained, and slightly acidic. A good mixture of peat moss, sand, and loamy soil is essential for its growth. The plant requires moist soil that is regularly watered but not waterlogged. Additionally, the soil should be updated annually to ensure it is fertile enough for new growth.
Cultivation Methods of Coleus Praetermissus Bullock & Killick
Coleus praetermissus Bullock & Killick is a tropical plant native to Southeast Asia, and it requires warm temperatures above 60?. It can be cultivated both indoors and outdoors in partial shade and well-draining soil. To ensure a successful cultivation of this plant, it is important to follow specific methods.
Indoor cultivation requires a pot with drainage holes, whereas outdoor cultivation necessitates a well-draining site that will not get boggy. When planting, amend the soil by adding compost or other organic matter.
To propagate, take stem cuttings of 4-5 inches just below the node. Put them in water until root development. The roots should form in about 2-3 weeks, and you can then transplant the seedlings to your desired location.
Watering Needs of Coleus Praetermissus Bullock & Killick
Coleus praetermissus Bullock & Killick requires consistent watering that allows the soil to stay moderately moist. Avoid keeping it too dry or too moist, as overwatering can cause root rot while underwatering can result in dry soil and wilted leaves.
It is recommended to water this plant in the early morning or late afternoon to reduce water loss due to the sun's heat and prevent fungal infections. Ensure the water drains out quickly, preventing the soil from getting soggy during the rainy season.
Fertilization of Coleus Praetermissus Bullock & Killick
Coleus praetermissus Bullock & Killick requires regular fertilization during its growing season (Spring and summer). Use a balanced, water-soluble fertilizer with an NPK ratio of 8-8-8 or 10-10-10 every two weeks.
Use a low-nitrogen fertilizer to avoid making the plant too leafy, which can reduce flowers' number and quality. Stop fertilizing during the dormant season (Fall and winter).
Pruning of Coleus Praetermissus Bullock & Killick
Regular pruning is necessary for maintaining a compact and bushy shape of Coleus praetermissus Bullock & Killick. Avoid pinching out the tip regularly, as this can reduce the number of flowers.
Remove the dead or yellow leaves regularly to encourage fresh growth and air circulation. Pinch the side shoots to encourage branching and more flowering. If you want a larger plant, pinch to reduce bushiness.
Propagation of Coleus praetermissus Bullock & Killick
Coleus praetermissus Bullock & Killick is a herbaceous plant that belongs to the Lamiaceae family. This plant is native to the highlands of Papua New Guinea, where it is mainly found growing in forests and shaded areas. Propagation of Coleus praetermissus can be done through various methods, including:
Seed Propagation
One of the easiest ways to propagate Coleus praetermissus is through seed propagation. First, the seeds should be collected from the parent plant. It is recommended to collect the seeds in the early morning hours when the seed pods are dry and brittle. The seeds should be stored in a cool and dry place before planting. When planting, the soil should be moist, and the seeds should be sown at a depth of about 1/8 inch. The seedlings should be kept in a warm and humid place until they are strong enough to be transplanted.
Stem Cutting Propagation
Another way to propagate Coleus praetermissus is through stem cutting propagation. This method involves taking a healthy stem cutting with at least two nodes. The lower leaves should be removed, and the stem should be dipped in a rooting hormone. The cutting should then be planted in a moist and well-drained soil, and kept in a warm and humid place. It is essential to ensure that the soil stays moist but not waterlogged. The cutting should take root within a few weeks, and new growth should appear.
Division Propagation
Division propagation can also be used to propagate Coleus praetermissus. This method involves dividing the parent plant into smaller sections and planting them separately. First, the parent plant should be carefully dug up, and the roots should be washed clean. The plant should then be divided into sections, each with its own set of roots and shoots. The sections should be planted in well-drained soil and kept moist until new growth appears.
Overall, Coleus praetermissus Bullock & Killick can be propagated through various methods, including seed propagation, stem cutting propagation, and division propagation. Each method has its own advantages and disadvantages, and the choice of method will depend on the grower's preference and the available resources.
Disease and Pest Management for Coleus praetermissus Bullock & Killick
Coleus praetermissus Bullock & Killick is a popular ornamental plant that is widely cultivated for its attractive foliage and bright colors. Like any other cultivated plant, it is susceptible to various pests and diseases that can damage the plant and reduce its yield. Therefore, it is crucial to know about the common diseases and pests that may affect the plant and how to manage them effectively.
Common Diseases
One of the common diseases that affect Coleus praetermissus is leaf spot. It is caused by the fungus Cercospora spp. The disease is characterized by the appearance of small brown or black spots on the leaves, which may merge to form irregular patches. To prevent the disease, it is crucial to avoid overhead watering, improve air circulation, and remove the infected leaves regularly. Fungicides such as chlorothalonil can also be applied to control the spread of the disease.
Another common disease is powdery mildew. It is caused by the fungus Erysiphe cichoracearum. The disease is characterized by the appearance of a white powdery substance on the leaves, stems, and flowers. To control the disease, it is crucial to maintain good air circulation, avoid overhead watering, and remove the infected leaves. Fungicides such as sulfur can also be used to control the spread of the disease.
Common Pests
One of the common pests that affect Coleus praetermissus is spider mites. The pests suck the sap from the leaves, causing yellowing and wilting of the leaves. To control the pests, it is crucial to maintain good air circulation, avoid over-fertilization, and remove the infected leaves. Insecticides such as neem oil can also be used to control the pests.
Another common pest is mealybugs. The pests feed on the leaves, causing yellowing and stunting of the plant. They also secrete a sticky substance called honeydew, which attracts ants and promotes the growth of mold. To control the pests, it is crucial to remove the infected leaves and spray the plant with soapy water or insecticidal soap. Insecticides such as imidacloprid can also be used to control the pests.
Proper care and maintenance of Coleus praetermissus Bullock & Killick can help prevent and manage diseases and pests. Regular inspection of the plant for any signs of damage or infestation can help catch the problem early and prevent it from spreading.
