Centella obtriangularis Cannon
Centella obtriangularis Cannon is a highly sought-after medicinal herb that is native to Sri Lanka. It is commonly known as the Sri Lanka pennywort or muduruwana in the Sinhalese language. It belongs to the family Apiaceae and is closely related to other centella species such as Centella asiatica and Centella erecta.
Appearance
The plant has a prostrate growth habit with creeping stems that can grow up to 10cm in length. It has spherical to oval-shaped leaves with a glossy surface that can grow up to 6cm in diameter. The leaves have a slightly sour taste and are often consumed fresh or used as a vegetable. The plant also produces small, white to pink flowers that bloom from early summer to late autumn.
Uses
Centella obtriangularis is widely known for its medicinal properties and has been used in traditional Ayurvedic medicine to treat various ailments. The leaves of the plant are rich in flavonoids, triterpenoids, and asiaticoside, which have been shown to have anti-inflammatory, anti-stress, and antioxidant properties. The plant is also used to improve blood circulation, promote wound healing, and reduce anxiety and stress. Additionally, extracts from the plant have been found to have potential therapeutic activity against cancer.
Aside from its medicinal uses, Centella obtriangularis is also used as a food source in Sri Lanka. The fresh leaves of the plant are consumed as a salad or added to soups and stews, while the dried leaves are used to make a tea. The plant is also used as a garnish for various dishes and as a flavoring agent in some traditional Sri Lankan sweets.
In conclusion, Centella obtriangularis is a versatile and highly beneficial plant that is prized for its medicinal and culinary uses. Its unique appearance and valuable properties make it an important species in the world of botany and traditional medicine.
Growth Conditions for Centella obtriangularis Cannon
Centella obtriangularis Cannon, also known as "corner leaf pennywort," is a flowering plant that thrives in wet or moist environments, typically found near streams, ponds, or other sources of water. The following are the typical growth conditions required for this plant:
Light
Centella obtriangularis Cannon prefers full or partial shade, making it an ideal indoor or outdoor plant. Direct sunlight can cause the leaves to burn, so it is best to place the plant in a shaded corner or under the shade of other plants or trees.
Temperature
The ideal temperature range for Centella obtriangularis Cannon is between 20°C to 30°C, which is considered warm and humid. Temperatures below 10°C can cause the plant to wilt or die, while temperatures above 35°C can cause heat stress and impair growth.
Soil
Centella obtriangularis Cannon requires well-draining soil that is rich in organic matter and moisture. The ideal pH range is between 6.0 and 7.0. It is essential to maintain the soil's moisture level, as the plant may suffer from dehydration if the soil dries out. Adding organic compost or mulch can provide an extra layer of protection against moisture loss.
Overall, Centella obtriangularis Cannon is a low-maintenance plant that can thrive in various conditions, making it an excellent choice for gardeners looking for an easy-to-grow species. With adequate light, temperature, and soil conditions, the plant can survive for years, providing a beautiful and refreshing addition to any garden or home.
Cultivation Methods for Centella obtriangularis Cannon
The cultivation of Centella obtriangularis Cannon involves several crucial steps. The first step involves choosing the proper location. Choose an area with partial to full shade and well-drained soil. Next, prepare the soil by loosening it to a depth of about 8-10 inches, mix compost, and other organic matter to enrich it with nutrients.
Sow Centella obtriangularis Cannon seeds in spring or early summer, about 2-3 inches apart and a quarter-inch deep. Cover the seeds with a thin layer of soil, and water gently to keep the soil damp. Germination takes seven to fourteen days, depending on the soil temperature.
Watering Needs for Centella obtriangularis Cannon
Centella obtriangularis Cannon prefers moist soil and requires regular watering, especially during the hot, dry months. The plant can't tolerate drought or excessive moisture, so you should strike a balance when watering.
Water the plant once or twice a week, depending on the weather conditions. Monitor the soil moisture level, and only water when the top 1-2 inches of soil are dry.
Fertilization of Centella obtriangularis Cannon
Centella obtriangularis Cannon requires moderate fertilization to thrive. When the plant is young, fertilize it monthly with a balanced 10-10-10 liquid fertilizer. Once the plant matures, feed it once every three months.
During the growing season, side-dress the plants with compost or well-aged manure to provide extra nutrients. Don't over-fertilize the plant as it can lead to weak growth and increased pest problems.
Pruning Centella obtriangularis Cannon
Pruning Centella obtriangularis Cannon is not mandatory, but it helps promote healthy growth and bushiness. The best time to prune is in early spring or late winter before the new growth emerges.
Use sharp, sterile pruning shears to trim back any dead or damaged stems. Prune back the tips of the youngest shoots to encourage branching. Don't cut back more than one-third of the total plant height to avoid stressing the plant.
Propagation of Centella obtriangularis Cannon
Centella obtriangularis Cannon can be propagated through seeds or cuttings. The plant is a creeping perennial that thrives in wet soils. Propagation is possible throughout the year, except during extreme temperatures.
Propagation through seeds
The seeds of Centella obtriangularis Cannon are available at nurseries. The seeds germinate easily in pots, containers, or directly on the ground. The ideal time to sow the seeds is in early spring when the air temperature is warm. The soil should be moist for better germination. The seeds can be placed on the soil surface and covered with a thin layer of soil. The germination period can take up to a month. The seedlings can be transplanted when they have grown to a suitable size.
Propagation through cuttings
Propagating cuttings is a faster method to obtain new plants. Cuttings can be taken at any time of the year, but the best results are achieved during the growing season. The cuttings should be taken from healthy plants, ensuring that they have at least two nodes and a few leaves. The cuttings can be planted directly in pots or containers. It is advisable to place the pots in a shaded area to prevent the cuttings from drying out. The cuttings need to be watered regularly. After a few weeks, new leaves will start to grow, indicating that the cuttings have taken root. The new plants can be transplanted to their permanent position after a few months.
Overall, Centella obtriangularis Cannon can be propagated through seeds or cuttings. Both methods have their advantages, and growers can choose the one that suits their needs best. By propagating Centella obtriangularis Cannon, growers can increase the number of plants in their collection and help preserve this unique species.
Disease and Pest Management for Centella obtriangularis Cannon
Centella obtriangularis Cannon is a herbaceous perennial plant that is commonly used in traditional medicine. While the plant is generally hardy and resistant to pests and diseases, it can be susceptible to a few common problems that can affect its growth and health.
Pests
There are a few pests that can potentially impact the growth and vitality of Centella obtriangularis Cannon. While these pests are not typically a major concern, it is important to monitor your plants for any signs of infestation so that you can take action if needed.
Aphids
Aphids are small, soft-bodied insects that can feed on the foliage of Centella obtriangularis Cannon. These pests are often found in colonies and can cause significant damage to plants if left unchecked.
To manage aphids, you can try spraying your plants with a high-pressure hose to dislodge the insects, or use insecticidal soap or neem oil to control their populations. Encouraging natural predators such as ladybugs and lacewings can also help keep aphids in check.
Caterpillars
Caterpillars can also be a problem for Centella obtriangularis Cannon, as they can feed on the foliage and cause significant damage to the plant over time. Some common caterpillar species that may affect this plant include cabbage loopers and cutworms.
To manage caterpillars, you can handpick them off your plants and dispose of them, or use Bacillus thuringiensis (BT) to control their populations. Keeping your garden tidy and free of plant debris can also help reduce the likelihood of these pests taking hold.
Diseases
Centella obtriangularis Cannon is generally resistant to most common plant diseases, but there are a few issues that can arise under certain conditions. Here are some of the most common diseases that can affect this plant:
Leaf Spot
Leaf spot is a fungal disease that can cause yellow or dark spots to appear on the leaves of Centella obtriangularis Cannon. In severe cases, the leaves may turn brown or black and fall off the plant.
To manage leaf spot, it is important to remove and dispose of any infected leaves as soon as possible. You can also try using a copper-based fungicide to control the spread of the disease. Avoid overhead watering and remove any plant debris from around your plants to help prevent the spread of fungal spores.
Root Rot
Root rot is a common problem for plants that are overwatered or planted in poorly draining soil. This fungal disease can cause the roots of Centella obtriangularis Cannon to rot, leading to stunted growth and plant decline.
To manage root rot, it is critical to improve soil drainage around your plants. You can also try reducing watering and allowing the soil to dry out slightly between waterings. Fungicides may also be effective if used early in the disease process.
By staying vigilant and taking these simple steps to manage pests and diseases, you can keep your Centella obtriangularis Cannon plants healthy and thriving for years to come.
