Overview of Ochthocharis setosa (Hook.f.) Hansen & Wickens
Ochthocharis setosa (Hook.f.) Hansen & Wickens is a perennial plant species that belongs to the family Asteraceae (compositae). It is native to the Andes mountains of South America and is primarily found in Argentina, Chile, and Bolivia.
Common Names
The plant is commonly known as "Pitilla," "Pasto Estrella," "Peinecillo," "Cotula," and "Hierba de las Ladronas".
Description and Appearance
Ochthocharis setosa is a low-growing, spreading plant that typically reaches a height of 10-25 centimeters. It has small, green leaves that are densely packed on the stem. The flower heads are yellow or golden and are located at the end of long, thin stems. The plant produces fruit, which is an achene that is light brown in color. The plant has a strong, distinct odor.
Uses
Ochthocharis setosa has a wide range of uses in traditional medicine. It has been used as a remedy for stomach problems, kidney problems, and as a diuretic. It is also used to treat respiratory problems, such as asthma and bronchitis. The plant has antibacterial and anti-inflammatory properties and has been used to treat skin infections and wounds. Additionally, the plant is used in the manufacturing of cosmetics and shampoos.
Ochthocharis setosa is also used as a forage plant for animals, particularly in Argentina and Chile. It is a valuable plant for soil conservation, as it helps prevent soil erosion and improves soil quality.
Growth Conditions for Ochthocharis setosa
Ochthocharis setosa (Hook.f.) Hansen & Wickens, also known as the woolly ochthocharis, is a perennial herbaceous plant that belongs to the family of Asteraceae. It is a native of the alpine regions in East Africa, especially in the high altitude grasslands and rocky areas. The following are the typical growth conditions required for Ochthocharis setosa:
Light
Ochthocharis setosa requires full sun or partial shade to grow. It is adapted to its natural habitat, which receives high levels of direct sunlight, and grows best when exposed to similar light conditions. Therefore, it requires a location with bright light to thrive. Partial shade can be used for young plants to prevent sun scorch and establish them.
Temperature
Ochthocharis setosa can grow in cool to cold temperatures. It is adapted to the alpine regions of East Africa, which have cool and often harsh conditions. Therefore, it requires temperatures of 0-15 °C to thrive. In warmer climates, it may not grow well unless planted in areas with cool microclimates such as mountains and rocky areas, where the temperatures are cooler.
Soil Requirements
Ochthocharis setosa prefers well-draining, rocky, and nutrient-poor soils. Its natural habitat is characterized by rocky soils that are often shallow and free-draining. Therefore, it requires soils with good drainage to prevent waterlogging. It also grows best in soils that are slightly acidic to neutral (pH 6-7).
Additionally, Ochthocharis setosa requires soils with low nutrient levels. Therefore, it is not suitable to plant in fertile soils. Fertile soils stimulate the growth of foliage instead of flowers, which reduces its overall growth.
Overall, Ochthocharis setosa requires unique growth conditions, which include full sun or partial shade, cool temperatures, and well-draining, rocky, and nutrient-poor soils. Providing it with these growth conditions will enable it to thrive and reach its full potential.
Cultivation Methods
Ochthocharis setosa, commonly known as Hook's oxalis, is a delicate plant that thrives in well-drained soils with moderate to full sunlight. It is native to South Africa and perfect for rock gardens, container gardens, and garden borders.
To cultivate this plant, start by choosing a location with slightly acidic soil that is rich in organic matter. Amend the soil with well-composted manure or organic fertilizer before planting.
The best time to plant Ochthocharis setosa is during the fall or spring when the soil is moist. Space the plants at least 6 inches apart to give them enough room to spread and grow.
Watering Needs
Ochthocharis setosa requires regular watering to maintain its moisture needs. Water the plants deeply, at least once a week, but avoid overwatering, which can cause root rot and other problems.
During the hot summer months, the plants may require more frequent watering, especially if they are grown in containers. To test whether the soil is dry or moist, stick your finger at least an inch into the soil.
Fertilization
To ensure healthy growth and vibrant flowers, feed Ochthocharis setosa with a balanced, slow-release fertilizer during the growing season. Fertilize the plants at least once a month from early spring to late summer, and reduce the amount in the fall as the plant goes dormant.
Avoid over-fertilization, which can lead to excessive leaf growth and reduced flowering.
Pruning
Pruning is essential to keep Ochthocharis setosa in a healthy, compact form. Trim off the spent flowers regularly to promote more blooms and prevent the plant from becoming leggy.
Once the plant goes dormant in the fall, cut back any dead or damaged stems to just above the ground level. Pruning during the fall also helps protect the plant from harsh winter conditions and prepare it for the next growing season.
Propagation of Ochthocharis setosa
Ochthocharis setosa, commonly known as the hairy-bract ochthocharis, is a perennial herb found in the Himalayas, specifically in Bhutan, Nepal, and India. It is an excellent plant for alpine and rock gardens, and it is propagated mainly by seeds and occasionally by division.
Seed Propagation
Ochthocharis setosa produces seeds that can be propagated in the spring. The process involves planting the seeds in well-draining soil and covering them lightly with compost. The seeds need to be kept moist during germination, which typically takes 2-4 weeks. Once the seedlings have grown to a height of 2-3 inches, they can be transplanted to individual containers or directly in the garden.
Division Propagation
The division is not the preferred propagation method for Ochthocharis setosa, but it can be done in the early spring. The plant can be dug up and divided into several clumps, making sure that each clump has some roots and foliage. The clumps can then be replanted in prepared soil and kept moist until established.
Overall, Ochthocharis setosa is an easy plant to propagate, and with proper care, it can provide a beautiful addition to any garden.
Disease Management
Ochthocharis setosa is a relatively disease-resistant plant. However, some fungal infections and leaf spotting can occur under certain conditions:
- Anthracnose: This fungal disease can cause irregular brown or black spots on the leaves. Use copper-based fungicides to prevent the infection from spreading.
- Leaf spot: Leaf spotting can occur due to humid and wet conditions. Use proper sanitation practices, such as cleaning up fallen leaves and avoiding overhead watering, to prevent the spread of this disease.
Pest Management
Several pests can affect the growth of Ochthocharis setosa, including:
- Aphids: Aphids attack the soft tissue of the plant and cause stunted growth and distorted foliage. Use insecticidal soap or neem oil to prevent aphids from infesting the plants.
- Spider mites: Spider mites are common pests that can cause yellowing of leaves and webbing on the foliage. Use a strong blast of water or insecticidal soap to remove spider mites.
- Slugs and snails: These pests can cause significant damage to the plant's leaves. Use slug bait or handpicking to prevent these pests from damaging Ochthocharis setosa.
Regular inspection and proper sanitation practices, such as removing debris and fallen leaves, can also help to prevent pest infestations.
