Overview
Cotula viscosa L. is a flowering plant that belongs to the Asteraceae family. This plant is commonly referred to as "Sticky Cotula" due to its sticky feel, as the surface of the plant is covered with glandular hairs. Cotula viscosa L. is native to South Africa, but it has been introduced to other parts of the world and has become naturalized in many areas.
General Appearance
Cotula viscosa L. is a small annual or perennial herb that grows up to 30 cm tall. The plant roots at the nodes and has a spreading growth habit, forming a mat or carpet-like appearance. The leaves are small, linear to oblong in shape, and are covered with glandular hairs that give them a sticky feel. The flowers are small, yellow, and daisy-like, with the flower heads arranged in compact clusters at the ends of the stems.
Common Names
Cotula viscosa L. is known by various common names, including Sticky Cotula, Shiny Cotula, Gummy Cotula, and Cape weed.
Uses
In traditional medicine, Cotula viscosa L. has been used to treat various ailments, including digestive disorders, colds, and fever. The plant is also used to make tea, which is believed to have anti-inflammatory properties. In addition, the plant is used as a ground cover in landscaping and is known for its ability to withstand heavy foot traffic.
Growth Conditions of Cotula Viscosa L.
Cotula viscosa L. is a creeping, mat-forming perennial plant belonging to the Asteraceae family. It is commonly known as yellow buttons due to its small, bright yellow flowerheads. This species is native to Australia, where it grows in coastal areas and wetlands.
Light Requirements
Cotula viscosa L. plants require full sunlight to partial shade to grow properly. These plants will grow best in areas that receive at least six hours of direct sunlight daily. However, they can tolerate some shade and can even thrive in it, as long as they receive bright indirect light.
Temperature Requirements
The ideal temperature for Cotula viscosa L. growth is between 15°C to 25°C. Temperatures lower than 10°C can damage the plant severely, while temperatures higher than 30°C can cause it to wilt or become dormant. This species can tolerate frost but will require some protection if temperatures fall below -3°C.
Soil Requirements
Cotula viscosa L. prefers soil that is well-draining and slightly acidic to neutral. The plant cannot tolerate stagnant water, so it is essential to ensure adequate drainage. This species can grow in a variety of soils, including clay, loam, and sand. However, it prefers loamy soils with good fertility and a pH range between 6.0 to 7.0.
A well-amended soil is required to grow Cotula viscosa L. successfully. Adding organic matter to the soil helps improve its fertility and structure. Composts, peat moss, or well-rotted manure can be mixed into the soil before planting to provide necessary nutrients.
Cultivation of Cotula Viscosa L.
Cotula viscosa L. is a small groundcover plant that is native to Australia and New Zealand. It is commonly known as "buttonweed" or "sticky cotula" due to its sticky foliage. The plant prefers a sunny location with well-draining soil and is best grown in USDA Hardiness Zones 9 to 10.
Watering Needs
Cotula viscosa L. requires regular watering to establish a strong root system. However, it is important not to overwater the plant, as this can lead to root rot and other issues. The best way to determine when to water the plant is to check the moisture level of the soil by sticking your finger into the soil. If the soil feels dry to the touch, it's time to water.
Fertilization
Cotula viscosa L. does not require frequent fertilization, but a small amount of fertilizer can go a long way in ensuring the plant's health and vigor. Use a balanced fertilizer that is high in phosphorus and potassium, and apply it according to the manufacturer's instructions.
Pruning
Cotula viscosa L. does not require significant pruning, but it is beneficial to trim back any dead or damaged foliage to encourage new growth. Additionally, if the plant starts to become too leggy or sparse, trimming back the tips can help to promote bushier growth.
Propagation of Cotula Viscosa L.
Cotula Viscosa L., commonly known as Shiny Cotula, is a species of flowering plant in the Asteraceae family. It is a low-growing and mat-forming plant, with a spreading habit. This plant is well-known for its bright yellow flowers that bloom throughout the summer.
Propagation Methods
Cotula Viscosa L. can be propagated through various methods:
1. Division
This plant can be divided in spring or autumn by carefully pulling apart the clumps that have developed and replanting them in suitable soil. The divisions should be watered thoroughly after planting until they become established.
2. Seeds
Cotula Viscosa L. can be propagated through seeds. The seeds should be collected in summer or autumn when the seed heads turn brown. The seed heads should be placed in a paper bag and left in a warm, dry place until the seeds are released. After that, the seeds can be sown in pots or directly in the garden bed. The soil should be kept moist until the seeds germinate.
3. Stem Cuttings
Cotula Viscosa L. can also be propagated through stem cuttings. The cuttings should be taken from the new growth in spring or early summer. The cuttings should be about 8cm long and should be taken from below a leaf node. The lower leaves should be removed and the cutting should be dipped in rooting hormone. The cutting should be planted in a pot with well-drained soil and kept in a warm, bright place until it develops roots. After that, it can be planted in the garden bed.
These propagation methods will help you to increase the number of Cotula Viscosa L. in your garden and enjoy their bright yellow flowers.
Disease management
Cotula viscosa L. is a relatively disease-resistant plant. However, certain fungal and bacterial diseases can still affect the plant, causing problems and reducing yield. Below are some common diseases of Cotula viscosa L. and ways to manage them.
Gray mold
Gray mold is a fungal disease that affects many plants, including Cotula viscosa L. Symptoms include grayish-white mold on leaves and stems, wilting, and decay. Gray mold thrives in cool, moist conditions and can spread rapidly in humid environments. To manage gray mold, maintain proper spacing between plants to promote airflow, avoid overhead watering, and remove and discard any infected plant material.
Root rot
Root rot is a disease that affects the roots of many plants, including Cotula viscosa L. Symptoms include wilting, yellowing, and stunted growth. Root rot is caused by various fungi and can be exacerbated by overwatering and poor drainage. To manage root rot, ensure proper drainage, avoid overwatering, and remove and discard any infected plant material.
Pest management
Cotula viscosa L. can also be affected by various pests, including insects and mites. Below are some common pests of Cotula viscosa L. and ways to manage them.
Aphids
Aphids are small, soft-bodied insects that suck sap from plants, causing stunted growth and yellowing. In addition, they can transmit viral diseases. To manage aphids, apply a spray of insecticidal soap or neem oil to the affected plants, or release beneficial insects such as ladybugs or lacewings to eat them.
Spider mites
Spider mites are common pests that feed on the sap of plants, causing yellowing and stippling. They are particularly problematic in hot, dry weather. To manage spider mites, increase humidity by misting the plants, avoid overhead watering, and release beneficial insects such as ladybugs or predatory mites to eat them.
Caterpillars
Caterpillars are the larvae of moths and butterflies and can feed on the leaves of Cotula viscosa L., causing defoliation and reduced yield. To manage caterpillars, remove them by hand, or apply a spray of Bacillus thuringiensis (Bt), which is a naturally occurring bacteria that kills caterpillars.
