Overview
Symphyotrichum phlogifolium (Muhl. ex Willd.) Nesom, commonly known as Purplestem Aster, is a herbaceous plant species belonging to the aster family, Asteraceae. This plant is native to eastern North America, where it grows naturally in prairies, savannas, and open woodlands.Description
Purplestem Aster is a perennial plant that grows up to 1.5 m tall. The stem is hairy, and the leaves are alternate and lanceolate to oblong-lanceolate, pointed, and 3-10 cm long. The leaves are hairy and have a strong scent when crushed. The flowers are arranged in corymbose panicles at the ends of the branches and are typically 1-2 cm in diameter. The petals are lavender-blue to violet, and the center of the flower is yellow.Uses
Native American tribes traditionally used Purplestem Aster for medicinal purposes, such as to treat respiratory and digestive problems. The plant also attracts various pollinators, including butterflies and bees, making it an ideal plant for pollinator gardens. It is also a popular plant in ornamental gardens due to its showy blooms and attractive foliage.Cultivation
Purplestem Aster is easy to grow and requires well-drained soil in full sun to partial shade. This plant is resistant to drought, heat, and pests, making it a low-maintenance addition to the garden. In conclusion, Symphyotrichum phlogifolium (Muhl. ex Willd.) Nesom, or the Purplestem Aster, is a beautiful and versatile plant that not only adds a pop of color to your garden but also has various medicinal uses. Its stunning blooms and its hardiness make it a perfect addition to any landscape.Light Requirements
The Symphyotrichum phlogifolium requires full sun exposure to partial shade for optimal growth. It can survive in partial shade, but it will not bloom as well as it would in full sun.
Temperature Requirements
These plants prefer to grow in cooler temperatures but are adaptable to higher temperatures if the soil is adequately moist. The ideal temperature range for growth of Symphyotrichum phlogifolium is between 60 to 75°F (15.5 to 24°C).
Soil Requirements
Symphyotrichum phlogifolium typically grows in moist, well-drained soils. They preferably grow in clay loam, sandy loam, and silt loam but are tolerant of a wide range of soil types. However, the soil pH should be slightly acidic to neutral. Heavy or poorly drained soils should be avoided as they can lead to root rot.
Cultivation of Symphyotrichum phlogifolium (Muhl. ex Willd.) Nesom
Symphyotrichum phlogifolium (Muhl. ex Willd.) Nesom, also known as the aromatic aster, is a perennial plant native to North America that has clusters of small, daisy-like blue-purple flowers with a yellow center. When cultivating Symphyotrichum phlogifolium, it is essential to know the following:
Watering Needs for Symphyotrichum phlogifolium (Muhl. ex Willd.) Nesom
Symphyotrichum phlogifolium prefers moist soil that drains well. This plant requires regular watering, especially during dry periods. However, over-watering can lead to root rot. Water the plant at least once a week, and twice a week in especially dry periods.
Fertilization of Symphyotrichum phlogifolium (Muhl. ex Willd.) Nesom
Symphyotrichum phlogifolium is not a heavy feeder; however, it can benefit from an occasional application of fertilizer in the spring and summer seasons. Use a balanced, slow-release fertilizer such as a 10-10-10 in early spring or a 5-10-5 in early summer. Use a dose of one teaspoon per square foot of the plant's drip line. Avoid using fertilizer during the fall season as this may stimulate new growth that can become damaging during the winter.
Pruning of Symphyotrichum phlogifolium (Muhl. ex Willd.) Nesom
Symphyotrichum phlogifolium does not require regular pruning, but a light trim after blooming can promote fuller growth. Pruning may also be necessary to remove dead or damaged branches. Deadheading spent flowers can stimulate new blooms. Prune back about 1/3 of the plant's height in early spring before the new growth appears.
Propagation of Symphyotrichum phlogifolium
Symphyotrichum phlogifolium, commonly known as the Purplestem Aster is a native herbaceous perennial that typically grows in prairies, savannas, and woodlands. The plant is easily propagated by both seeds and division of the rhizomes.
Propagation by Seeds
The seeds of Symphyotrichum phlogifolium can be collected in the fall, as the plant begins to senesce. The collected seeds have to be cleaned and stored in an airtight container in a cool and dark place until spring. For successful seed propagation, the stratification process is required. The seeds can be stratified in moist sand or peat moss for 4-6 weeks at a temperature of 40-50°F. After stratification, the seeds can be sown directly in the garden bed, nursery bed, or raised beds where they will receive full sun, or partial shade. The soil should be well-drained, fertile, and moist.
Propagation by Division
The clumps of Symphyotrichum phlogifolium can be divided in the spring or fall. To divide the plant, dig up the clump, separate the rhizomes and roots, and replant the individual parts. The newly separated divisions can be planted in prepared nursery beds or directly in the garden where they will receive full sun or partial shade. The soil should be well-drained, fertile, and moist.
Disease Management
Symphyotrichum phlogifolium, commonly known as the Appalachian American-aster, can be affected by various diseases. The plant is susceptible to fungal diseases like powdery mildew, rust, and leaf spot. Powdery mildew appears as a white powdery substance on the foliage, while rust is identified by orange or yellow spots on the leaves and stems. Leaf spot, on the other hand, is characterized by dark spots on the foliage.
To manage fungal diseases, it is essential to keep the environment clean and hygienic. Remove the diseased foliage and leaves from around the plant and dispose of them properly. Ensure good air circulation and avoid overhead watering to minimize moisture retention on the foliage, as fungi thrive in moist environments. Fungicides can also be used to control the spread of diseases, but it is advisable to consult a plant expert for advice on the type and application method of the fungicide.
Pest Management
Symphyotrichum phlogifolium can also be vulnerable to pest infestation. One of the most common pests that attack this plant is the aphid, which feeds on the sap of the plant and causes stunted growth and distorted leaves. Another pest that can affect this plant is the spider mite, which feeds on the undersides of the leaves and causes yellowing and wilting.
To control aphid infestation, the use of insecticidal soap can be a useful management strategy. Neem oil can also be used to repel aphids. Spider mites, on the other hand, can be controlled by increasing humidity levels around the plant or through the application of miticides. However, like with fungicides, it is crucial to consult with a plant expert before using any pesticide.
Regular inspection and monitoring of the plants can help detect any disease or pest infestations early, making it easier to manage them. Overall, appropriate management of diseases and pests is essential in preventing the damage and maintaining the health and appearance of Symphyotrichum phlogifolium.
