Overview
Aster subgeminatus (Fern.) Boivin is a herbaceous perennial plant that belongs to the family Asteraceae. It is commonly found in the eastern part of North America, mainly in regions like Quebec, Ontario, and the Northeastern United States.
Common Names
Aster subgeminatus is commonly known as Eastern Silver Aster, Fern-leaved Aster, Fern Aster, and Western Silver Aster in different parts of North America.
Uses
The plant has been used by indigenous communities for various purposes. The Cherokee people used the roots of Aster subgeminatus to cure fevers while the Iroquois used it to treat colds and coughs. The plant is also known to have anti-inflammatory properties and can be used to treat skin irritations and wounds.
Appearance
Aster subgeminatus is a tall plant that can grow up to 120 cm in height. The stems are slender and covered in fine white hairs. The leaves are fern-like and arranged alternately on the stem. The leaves are usually 3-6 cm long and 1-3 cm wide. The flowers of the plant grow in clusters and are pink or purple in color. The plant blooms from July to September.
The plant usually grows in moist soil and can be found in meadows, open woods, and along streams and riverbanks.
Light Requirements
Aster subgeminatus, like many other plants, prefers full sunlight to grow most optimally. The plant needs at least six hours of sunshine each day to thrive. Lack of enough sunlight may cause the plant to flower less and become leggy in search of light.
Temperature Requirements
Although Aster subgeminatus is generally tolerant of a wide range of temperatures, it often grows best in moderate temperatures. The ideal growth temperature for this plant is between 55 and 75 degrees Fahrenheit. Temperatures above 85 degrees Fahrenheit are not beneficial for its growth. Cold temperatures below 20 degrees Fahrenheit may cause the flower buds to wither and die. Thus, a temperature range of around 55 to 75 degrees Fahrenheit is optimal for this plant to grow well.
Soil Requirements
Aster subgeminatus requires a fertile, well-drained soil with a neutral pH. The soil should be rich in organic matter and have good drainage to prevent waterlogging, which can cause root rot. The addition of peat moss or compost can help improve the soil's texture and fertility. Before planting, ensure the soil is tilled to a depth of about eight inches to allow the plant's roots to penetrate easily.
Cultivation
The Aster subgeminatus, a perennial plant typically found in the eastern United States, is relatively easy to grow and maintain. Proper planting, soil preparation and maintenance will go a long way in ensuring a healthy plant. The best time to plant is in spring, typically after the last frost but before the summer heat sets in.
Before planting, prepare the ground by tilling the soil to a depth of about six inches. Make sure to remove any weeds, rocks or other debris from the soil. Add compost or well-rotted manure to provide the plant with essential nutrients.
The plant requires exposure to at least six hours of sunlight per day, and the soil must be well-draining to prevent waterlogging and root rot. Space young plants about 12-16 inches apart to allow enough room for growth.
Watering Needs
Aster subgeminatus needs moderate watering, about an inch of water per week. The plant is relatively drought-resistant but requires enough water to support growth. Water at the base of the plant, and avoid watering the foliage. Watering early in the day allows enough time for the leaves to dry out before sunset, reducing the likelihood of fungal disease
Fertilization
Fertilizing Aster subgeminatus ensures healthy growth and an abundant display of blooms. Apply a balanced fertilizer in early spring before new growth occurs. Use a slow-release fertilizer with equal amounts of nitrogen, phosphorus and potassium. Repeat the application in mid-summer to promote continuous blooms.
Avoid over-fertilizing as it can lead to excessive growth, making the plant prone to pest and disease infestation. Always follow the instructions on the fertilizer label to avoid damaging the plant.
Pruning
Pruning Aster subgeminatus helps to promote bushier growth and an abundance of blooms. Cut back the plant by about half its height in mid-spring. Deadhead spent blooms regularly to promote continuous flowering.
Cut back the entire plant to about three to four inches tall after the first frost in fall to prepare for winter dormancy. This also helps to keep the plant under control and prevent it from spreading too much.
Propagation of Aster subgeminatus (Fern.) Boivin
Aster subgeminatus (Fern.) Boivin, also known as eastern line aster, is a lovely perennial plant featuring white, daisy-like flowers with blue centers. It is native to North America and grows in moist soils in open woodlands and prairies. It is a hardy plant that is relatively easy to propagate by following some straightforward methods.
Propagating Aster subgeminatus by Division
One of the easiest ways to propagate Aster subgeminatus is through division. To do this, wait until the plant has finished flowering and its foliage has started to yellow. Dig up the plant and divide the root ball into several smaller sections. Each section should have several sturdy stems and a good root system.
Plant the divisions in a well-draining soil mixture that is moist but not waterlogged. Make sure the planting hole is large enough to accommodate the roots and cover them with soil. Keep the soil consistently moist, and reduce watering once the plants have become established. It usually takes about six to eight weeks for the new shoots to appear.
Propagating Aster subgeminatus by Seed
Another way to propagate Aster subgeminatus is by seed. Harvest seeds as soon as the flowers begin to fade and set the seed pods. Collect the seed pods and let them dry on a paper towel or in a container. After they are dry, crush the pods and remove the seeds.
Fill a seed tray with well-draining soil and press the seeds gently onto the soil surface. Do not cover them with soil as they need light to germinate. Water the trays from below to prevent disturbing the seeds and keep the soil moist. Place the tray in a bright location with temperatures between 60 and 70 degrees Fahrenheit. Germination usually takes around two to four weeks.
Conclusion
Since Aster subgeminatus is a hardy, native plant, it is relatively easy to propagate. The two main methods for propagation are division and seed. Both methods require patience and attention to detail. Propagating by division is the easiest and fastest way to obtain new plants, while propagating by seed requires more attention and time to grow the seeds into healthy plants. By following the appropriate procedures, you can propagate Aster subgeminatus and enjoy its beautiful blooms year after year.
Disease Management for Aster subgeminatus (Fern.) Boivin
Aster subgeminatus is relatively resistant to most common plant diseases but there is still a chance of infection. The most common diseases that might affect the plant include powdery mildew, bacterial leaf spot, and root rot.
Powdery mildew appears on the leaves of the plants as a white powdery substance. It can be treated by removing the infected leaves and keeping the surrounding area clean and dry. Application of neem oil and sulfur sprays can also be effective.
Bacterial leaf spot is seen as watery spots on the infected leaves, followed by yellowing and leaf drop. To manage the disease, remove the infected parts of the plant and spray with copper-based fungicides. Proper disposal of infected plant material is also crucial to prevent the spread of the disease.
Root rot is a fungal disease that affects the roots of the plant, causing them to turn brown and mushy. To reduce the risk of root rot, avoid overwatering and ensure the soil is well-draining. If the disease is already present, applying a fungicide can help but it may be difficult to fully recover the plant.
Pest Management for Aster subgeminatus (Fern.) Boivin
Aster subgeminatus can be susceptible to pests such as aphids, spider mites, and thrips. Early detection and management are necessary to prevent damage to the plant.
Aphids can cause damage to the plant by sucking the sap from the leaves, leading to stunted growth and distorted leaves. Sticky traps and spraying with insecticidal soap or oils can be effective to manage aphids.
Spider mites are tiny insects that can form webs on the underside of the leaves. They cause damage by sucking the sap from the leaves, leading to discoloration and distortion. To manage spider mites, it is recommended to spray the plant with a mix of neem oil and water at least once a week.
Thrips are small insects that can cause damage by feeding on the leaves and spreading viruses. Infected plant parts should be removed and the plant can be sprayed with insecticides containing spinosad or Bacillus thuringiensis (BT).
