Origin
Aster diplostephioides is a herbaceous perennial plant native to China, Korea, and Japan. It grows in moist, shady areas such as forests, canyons, and valleys, at elevations from 1000 to 3000 meters. The plant was introduced to the United States in the 1980s and has since spread to many regions across the country.
Common Names
Aster diplostephioides has several common names, including Double-Step Aster, Double-Row Aster, and ??? in Chinese. It is also known as the "Survivor Plant" due to its ability to withstand harsh growing conditions, such as drought and poor soil quality.
Uses
Aster diplostephioides is primarily grown as an ornamental plant in gardens and landscapes. Its attractive flowers, which bloom from August to October, have a striking purple color and distinctive double row of petals. The plant is also used in traditional Chinese medicine to treat various ailments, including fever, inflammation, and pain.
General Appearance
Aster diplostephioides reaches a height of 30 to 60 cm and has a clumping growth habit. Its leaves are lance-shaped, dark green, and grow up to 10 cm long. The flowers grow in clusters at the end of the stem and have an overall diameter of 3 cm. Each flower head has 20 to 30 ray florets that are purple-blue in color. The plant blooms in late summer to mid-fall and is attractive to bees and butterflies. The root system of Aster diplostephioides is shallow, making it susceptible to damage from large animals and harsh weather conditions.
Growth conditions for Aster diplostephioides
Light requirements: Aster diplostephioides requires partial shade to full sun exposure for optimal growth. The plant cannot thrive in full shade since it restricts the amount of light required for photosynthesis.
Temperature: This plant requires a cool to the mild temperature of about 10°C to 24°C (50°F to 75°F), making it sometimes referred to as a cool-weather plant. High temperatures can result in leaf scorching; therefore, it thrives well in temperatures that do not go higher than 30°C (85°F).
Soil requirements: Aster diplostephioides thrives well in well-draining, fertile, moist soils. The soil pH level should range from slightly acidic to neutral (6.5-7 pH). The plant requires good drainage to prevent root rot, which can be detrimental to its growth. Additionally, a soil rich in organic matter is essential, and the plant benefits well from occasional fertilization to ensure continuous growth.
Cultivation
Aster diplostephioides, commonly referred to as the Chinese Aster, requires specific cultivation conditions for optimal growth. When planting in the garden, the plant requires fertile, well-drained soil that is slightly acidic to neutral in pH. It flourishes in areas with full sun exposure, although it can sustain partial shade in hotter climates. The ideal temperature range for cultivation lies between 20 – 28 degrees Celsius.
Watering and Fertilization
Aster diplostephioides requires moderate watering through its growing seasons, from spring to early fall. The soil should remain moist but not waterlogged. Frequent watering should only occur in hotter temperatures or in drought-prone regions. The soil should never dry out. Fertilization should also occur in spring and summer using a balanced fertilizer mix. It promotes more blooming and healthier leaves.
Pruning
To increase longevity and continued blossoming, it is crucial to prune the Aster diplostephioides regularly. Heavy pruning should occur during the plant's initial stages in early spring before new growth appears. Remove dead flowers but avoid cutting the woody stems from the previous season. Depending on the plant's size and structure, light pruning can be done during the summer season by removing the top half of the plant to promote bushier growth.
Propagation of Aster diplostephioides
Aster diplostephioides, commonly known as the doublecleft aster, is a perennial plant that belongs to the Asteraceae family. This plant is native to China and can grow in zones 5 to 8 in the United States. Propagating Aster diplostephioides is relatively easy, and it can be done by different methods.
Seed Propagation
The most common method of propagating Aster diplostephioides is through seeds. The seeds of this plant can be sown indoors or outdoors, and they require minimal preparation before planting. The ideal time to sow Aster diplostephioides seeds is in the spring season in a well-draining and slightly acidic soil mix. The seeds should be sown on the surface of the soil and kept moist until germination, which typically takes about 2 to 3 weeks. Seedlings can be transplanted into their final location once they have developed a set of true leaves.
Division
Another way to propagate Aster diplostephioides is through division. This method involves dividing an established plant into two or more parts and replanting them separately. The best time to divide this plant is in the early spring or fall seasons when the plant is dormant. Carefully dig up the clump of the plant and separate the sections with a clean and sharp tool. Replant the divisions in a well-draining soil mix, and keep them moist until they establish a strong root system.
Cuttings
Propagation of Aster diplostephioides can also be done through cuttings. This method involves taking semi-hardwood cuttings from the parent plant in late spring or early summer. Cut 4-6 inches long pieces, remove the bottom leaves, and dip the cut ends in rooting hormone before planting them in a well-draining soil mix. Keep the cuttings in a warm, humid environment, and mist them daily until they develop a strong root system.
Propagating Aster diplostephioides is a straightforward process, and gardeners can choose the method that best suits their needs. Regardless of the propagation method selected, the new plants will require adequate watering and care until they are fully established.
Disease and Pest Management for Aster diplostephioides
Aster diplostephioides, commonly known as Kansu aster, is a perennial plant that is native to China. It produces beautiful purple flowers and is an attractive addition to any garden. However, like any other plant, it is susceptible to various diseases and pests that can cause significant damage.
Common Diseases Affecting Aster diplostephioides Plants
A few diseases that commonly affect Aster diplostephioides plants include:
- Powdery Mildew: This disease is characterized by a white or gray powdery growth on the leaves and stems of the plant. It is caused by fungi and can be prevented by maintaining good air circulation around the plant and avoiding overhead watering. If already infected, remove the infected parts and treat the plant with a fungicide.
- Root Rot: Over-watering, poor drainage, and soil compaction are mostly responsible for this disease. The roots become mushy, and the plant may die or become stunted. Repot the plant using well-draining soil and water adequately, but avoid over-watering.
- Bacterial Spot: This disease is characterized by the formation of water-soaked spots on the leaves, which later turn black. It is caused by bacteria and is mostly prevalent when the weather is warm and humid. The spread of bacterial spot can be prevented by ensuring good air circulation and avoiding overhead watering. Infected parts should be removed and treated with a copper fungicide.
Common Pests Affecting Aster diplostephioides Plants
The common pests that can affect Astert diplostephioides plants are:
- Aphids: These are small, pear-shaped insects that attack the plant, causing distortion of the leaves and stems. They also excrete honeydew, which attracts other pests like ants. Aphids can be controlled by applying insecticidal soap or neem oil.
- Spider Mites: These pests cause yellow stippling on the leaves of the plant. They are tiny insects that thrive in hot and dry conditions. The best way to control spider mites is to spray the plant with water to keep them under control and wipe down the leaves with a damp cloth. Spraying the plant with insecticidal soap also helps.
- Leafhoppers: These insects are characterized by a green or brown color and hop from leaf to leaf. They cause yellowing and curling of leaves, making the plant look unhealthy. Leafhoppers can be managed by avoiding over-fertilizing, practicing good sanitation, and using insecticidal soap.
As with any plant, the best way to ensure that Aster diplostephioides remains healthy is to maintain good growing conditions, provide adequate water and sunlight, and keep an eye out for any signs of pests or disease. Regular maintenance practices like pruning and cleaning will also help in preventing pests and diseases.
