Overview
Cynanchum rossicum, also known as Kleopov, is a perennial herbaceous plant belonging to the family Apocynaceae. The plant is known for its invasive nature and is considered a major threat to native species. It is native to the Caucasus region of Asia and was introduced to North America as an ornamental plant in the 1800s.Common Names
Cynanchum rossicum is commonly known by several names, including dog-strangling vine, pale swallowwort, white swallowwort, and Vincetoxicum rossicum. These names reflect the plant's invasive and toxic nature.Appearance
Cynanchum rossicum has a distinctive appearance, with broad leaves that are oval-shaped and arranged oppositely on the stem. The leaves are a dull green color and can grow up to 3 inches long. The plant produces small, inconspicuous flowers that are white or pink in color and bloom in late spring to early summer. The flowers form clusters and are followed by elongated seed pods that split open when ripe, releasing many small, flattened seeds that are dispersed by wind.Uses
While Cynanchum rossicum has no significant commercial uses, it is considered a potential source of compounds that may have medical applications. Several studies have identified compounds in the plant that possess antibacterial and antifungal properties, and which could be explored as potential treatments for various diseases. However, due to its invasive nature and threat to native species, efforts are focused on eradicating this plant and preventing its spread.Light Requirements
Cynanchum rossicum prefers full sun to partial shade, but can tolerate shade in some regions. In areas with hot summer temperatures, partial shade is preferred to prevent overheating.
Temperature Requirements
The plant can thrive in a range of temperatures from -35°C to 40°C. However, it prefers cool and moist climates. The plant can tolerate frost and can grow in regions with low winter temperature.
Soil Requirements
Cynanchum rossicum prefers well-drained and moist soils. The plant can grow in a variety of soil types, but prefers neutral to slightly acidic soils. It does not tolerate waterlogged soils and poor drainage. The plant can grow in rocky soils and can tolerate salt-laden soils.
Cultivation of Cynanchum Rossicum (Kleopov) Barbarich
Cynanchum Rossicum (Kleopov) Barbarich is a plant that grows well in well-drained soil that is rich in organic matter. The plant prefers full sun but can tolerate some shade. It can be grown indoors or outdoors in most regions, but it grows best in USDA Hardiness Zones 5 to 9.
Watering Needs of Cynanchum Rossicum (Kleopov) Barbarich
The plant needs regular watering but should not be over-watered. Over-watering can cause root rot, which can lead to the death of the plant. The plant should be watered deeply once a week during the growing season and less frequently during the dormant season. When watering, it is best to water the soil around the plant rather than the leaves.
Fertilization of Cynanchum Rossicum (Kleopov) Barbarich
The plant benefits from regular fertilization. A slow-release fertilizer can be applied at the beginning of the growing season. Additionally, a liquid fertilizer can be applied every two weeks during the growing season to promote plant growth and flowering.
Pruning of Cynanchum Rossicum (Kleopov) Barbarich
The plant requires minimal pruning. Dead or damaged stems can be pruned out as needed. If the plant becomes overgrown, it can be cut back to control its size. However, it is best to avoid cutting back more than one-third of the plant at a time.
Propagation of Cynanchum rossicum
Cynanchum rossicum, also known as Kleopov, can be propagated by seeds, root cuttings, or division.
Propagation by seeds
Seeds of Cynanchum rossicum can be planted in the fall or spring. Before planting, the seeds should be stratified for 2-3 months at 5°C in a moist medium to help increase germination rates. After stratification, the seeds should be sown in a well-draining potting mix, covered lightly with soil, and watered well. The pot should be placed in a warm and sunny spot and kept moist until the seeds germinate.
Propagation by root cuttings
Cynanchum rossicum can also be propagated by root cuttings. In late fall or early spring, insert the cuttings horizontally, about an inch deep, into a well-draining potting mix. The cuttings should be placed in a bright and humid area and watered regularly. Roots and shoots should begin to appear in about 2-3 weeks. Once the plants have established a good root system, they can be transplanted into the garden.
Propagation by division
Cynanchum rossicum can be propagated by dividing the plant in the spring or fall. First, dig up the plant and separate it into clumps, being sure to keep the roots intact. Replant the clumps into well-draining soil and water well. Keep the plants moist until they become established in their new location.
Disease Management for Cynanchum rossicum (Kleopov) Barbarich
Cynanchum rossicum is generally resistant to most plant diseases, but occasionally it can be susceptible to certain fungal diseases such as powdery mildew and rust. Powdery mildew can cause the leaves to appear white, while rust can cause reddish-orange pustules on the leaves.
To prevent the onset of these fungal diseases, it is important to maintain proper air circulation and minimize humidity around the plant. Additionally, infected plant materials should be promptly removed and destroyed to prevent the spread of spores.
Pest Management for Cynanchum rossicum (Kleopov) Barbarich
Cynanchum rossicum can be affected by a variety of pests, including aphids, spider mites, and mealybugs. Aphids can cause stunted growth and yellowing of the leaves, while spider mites can cause webbing and discoloration of the leaves. Mealybugs can cause distorted growth and leave a sticky residue on the plant.
To prevent these pests, it is important to regularly inspect the plant for any signs of infestation. Pests can be removed by hand or by a strong blast of water. Insecticidal soap can also be used as a pest control measure, but care should be taken to not damage the plant.
