Origin and Common Names of Carpodinus glabra Pierre ex Stapf
Carpodinus glabra Pierre ex Stapf, also known as “Khuat lateng” or “Satyen” in Thai, belongs to the Rubiaceae plant family. This evergreen shrub is native to Southeast Asia, including Thailand, Cambodia, Vietnam, Laos, and Myanmar. It thrives in tropical and subtropical climates, particularly in dense forests and mountainous areas.
General Appearance of Carpodinus glabra Pierre ex Stapf
Carpodinus glabra is an erect shrub that can grow up to 1-2 meters in height. It has a single stem with opposite and elliptical leaves that are about 5-14 cm long and 2.5-9 cm wide. The leaves are shiny, dark green on the upper surface and pale green on the lower surface, with prominent veins.
The plant produces small, fragrant, and white flowers that grow in clusters at the end of the branches. The fruit of Carpodinus glabra is a globose, woody capsule that splits into two parts when mature, revealing small, round, and hard seeds.
Uses of Carpodinus glabra Pierre ex Stapf
Carpodinus glabra has various uses in traditional medicine, particularly in Southeast Asia. Its leaves, bark, and roots contain various bioactive compounds such as alkaloids, flavonoids, tannins, and saponins that exhibit antioxidant, anti-inflammatory, antimicrobial, and anti-cancer activities.
The plant extract is used to treat various ailments such as fever, cough, diarrhea, dysentery, stomach ache, and skin diseases. It is also used as a natural remedy for diabetes, hypertension, and liver problems.
Aside from its medicinal properties, Carpodinus glabra is also used as an ornamental plant due to its attractive foliage and flowers. It is easy to grow and maintain, making it an ideal plant for home gardens and landscaping.
Light requirements
The Carpodinus glabra Pierre ex Stapf plant prefers bright but indirect light. It can tolerate a few hours of direct sunlight a day, but prolonged exposure to direct sunlight can damage the leaves. Therefore, it is best to place the plant in a spot where it can receive bright light for a few hours a day and then indirect light for the rest of the day.
Temperature requirements
The Carpodinus glabra Pierre ex Stapf plant thrives in warm temperatures ranging from 18°C to 25°C. The plant can tolerate temperatures as low as 5°C, but it cannot survive frost. It is essential to keep the plant away from cold drafts and air conditioning vents that can cause the temperature to drop rapidly.
Soil requirements
The Carpodinus glabra Pierre ex Stapf plant requires well-drained soil rich in organic matter. The soil should be moist but never waterlogged, as excess water can cause root rot and other fungal diseases. It is recommended to use a good quality potting mix that provides adequate drainage and nutrients for the plant.
Cultivation methods for Carpodinus glabra
Carpodinus glabra is best grown in well-drained soil that is rich in organic matter. The plant prefers areas that are partially shaded or receive dappled sunlight. It can be grown in a pot or in the ground, but it is important to ensure that the soil is not too heavy, as this can lead to root rot. The plant also prefers a slightly acidic to neutral soil pH range of 6.0 to 7.5.
Watering needs for Carpodinus glabra
Carpodinus glabra requires regular watering to thrive, but it is important not to overwater the plant as this can cause root rot. The frequency of watering will depend on the temperature, humidity, and soil type. As a general rule, the plant should be watered when the top inch of soil feels dry to the touch. It is also important to avoid getting water on the leaves, as this can lead to fungal diseases.
Fertilization of Carpodinus glabra
Carpodinus glabra benefits from regular fertilization with a balanced, slow-release fertilizer. Fertilizer should be applied every two to four weeks during the growing season and then reduced or stopped during the winter months. It is important not to over-fertilize the plant, as this can lead to salt buildup in the soil, which can harm the roots and lead to nutrient deficiencies.
Pruning Carpodinus glabra
Pruning Carpodinus glabra is not necessary, but it can help promote bushier growth and remove any dead or damaged branches. Pruning should be done in the fall or early spring before new growth appears. It is important to use sharp pruning shears to avoid damaging the plant and to make clean cuts just above a leaf node or bud. The removed branches can be used for propagating new plants through cuttings.
Propagation Methods
Carpodinus glabra Pierre ex Stapf is propagated through several methods including seed propagation, cuttings, and root division.
Seed Propagation
Seeds should be collected from the plant when the fruit is ripe, which is usually in mid to late summer. The seeds should be sown in well-draining soil in containers or trays that have lids. They should be kept in a warm and humid environment, with occasional ventilation. Germination of the seeds usually takes 1-2 months, and after germination, the seedlings should be potted and cared for until they are large enough for planting in their permanent location.
Cuttings Propagation
Cuttings can also be taken from young green shoots or semi-hardwood cuttings. Cuttings should be approximately 12-15cm long, with at least three nodes. Remove the leaves from the lower half of the cutting and dip the cut ends in rooting hormone powder. Insert the cuttings into vermiculite or coconut coir, and keep them in a humid, warm environment. Rooting should occur in about 4-6 weeks, after which they can be potted and cared for until large enough for planting.
Root Division Propagation
Carpodinus glabra can also be propagated by dividing the rootball. This method is best carried out in late autumn or early spring when the plant is dormant. Gently dig up the root ball, taking care not to damage the roots. Use a sharp, clean knife to cut the root ball into several sections, each with a few shoots and healthy roots. Replant the sections in well-draining soil and water well. The young plants should be cared for as usual until they become established in their permanent location.
Disease and Pest Management for Carpodinus Glabra Pierre ex Stapf
Carpodinus glabra Pierre ex Stapf, commonly known as Creeping Cedar, is a small perennial herb that is grown for its ornamental value and medicinal properties. Like any other plant, Creeping Cedar is susceptible to a range of diseases and pests. Here are the common ones and ways to manage them.
Common Diseases
Leaf Spot: Leaf spot disease on Creeping Cedar manifests as brown spots on the leaves. This disease is caused by a fungal infection. To manage this disease, remove the affected leaves and discard them far from the plant. Also, avoid overwatering the plant as it creates a favorable environment for fungal growth.
Root Rot: Overwatering or poor drainage can lead to root rot in Creeping Cedar. This disease can be managed by ensuring proper drainage and watering the plant sparingly. If the plant shows signs of root rot, carefully remove it from the soil, and trim off the affected roots. Repot the plant into fresh soil, and avoid overwatering.
Powdery Mildew: Powdery mildew is a fungal infection that is characterized by a white powdery substance on the leaves and stems. This disease can be managed by removing the affected parts of the plant and using a fungicide spray. Also, ensure the plant has adequate air circulation as a humid environment is conducive for fungal growth.
Common Pests
Aphids: Aphids are small insects that suck sap from the plant and cause stunted growth. Manage aphids by removing them from the plant manually or by using a spray of soapy water. Neem oil and insecticidal soap are also effective in controlling aphids.
Spider Mites: Spider mites are tiny arachnids that feed on the plant sap and cause yellowing of the leaves. To control spider mites, rinse the plant with a strong stream of water and isolate the plant from other plants to prevent spread. Also, use insecticidal soap or neem oil to manage the infestation.
Mealybugs: Mealybugs are small white insects that leave a sticky residue on the plant and cause stunted growth. Remove mealybugs from the plant by hand, or use a cotton swab dipped in alcohol to wipe them off. Also, use insecticidal soap or neem oil to manage the infestation.
In conclusion, proper care and management practices such as watering, pruning, and soil management can help prevent diseases and pest infestations in Creeping Cedar. Regular inspection of the plant is also crucial in the early detection of any signs of disease or pests.
