Aster Novae-angliae ‘Lou Williams’ (New England Aster)

Plant: Table of Contents

All About Aster novae-angliae ‘Lou Williams’ (New England Aster)

Aster novae-angliae ‘Lou Williams’, commonly known as the New England Aster, is a beautiful and vibrant addition to any garden. This perennial plant belongs to the Asteraceae family and is cherished for its stunning purple flowers that bloom in the late summer and fall, adding a burst of color to the landscape. In this comprehensive guide, we will delve into the various aspects of cultivating and caring for Aster novae-angliae ‘Lou Williams’, exploring its cultural preferences, uses, propagation, and much more.

What is Aster novae-angliae ‘Lou Williams’ (New England Aster)?

Aster novae-angliae ‘Lou Williams’ is a cultivar of the New England Aster native to North America. It is a hardy, herbaceous perennial plant that typically grows in clumps and can reach a height of 3 to 5 feet, with a spread of 2 to 3 feet. This gorgeous variety is characterized by its deep purple, daisy-like flowers with bright yellow centers, creating a striking visual impact in gardens and landscapes.

Key Takeaways – Aster novae-angliae ‘Lou Williams’ (New England Aster)

Before we delve deeper into the specifics of caring for Aster novae-angliae ‘Lou Williams’, let’s highlight some key takeaways about this delightful plant.

  • Vibrant purple flowers
  • Late-season blooming
  • Attracts pollinators
  • Versatile landscaping plant
  • Deer-resistant and drought-tolerant
  • Suitable for cut flowers
  • Long-blooming and butterfly-friendly
  • Hardy perennial with vivid autumn colors


Cultivating Aster novae-angliae ‘Lou Williams’ involves understanding its cultural requirements, including water, sunlight, fertilizer, soil, and pruning needs.


New England Asters generally prefer moist, well-drained soil. Adequate moisture is crucial, especially during the plant’s establishment phase and periods of drought. While they do thrive in moist conditions, it is essential to avoid waterlogging, as excessively wet soil can lead to root rot.


Aster novae-angliae ‘Lou Williams’ flourishes in full sun, requiring at least 6 to 8 hours of direct sunlight per day. Adequate sun exposure ensures robust growth and abundant flowering, making it an excellent choice for sunny borders and garden beds.


When it comes to fertilization, a balanced, all-purpose fertilizer can be applied in early spring to support healthy growth and prolific blooming. It is essential to follow the recommended application rates to prevent over-fertilization, which can result in excessive foliage at the expense of flowers.


The New England Aster prefers rich, loamy soil with good drainage. Amending the soil with organic matter such as compost can improve its texture and fertility, providing an optimal growing medium for the plant.


Pruning can play a significant role in maintaining the health and appearance of Aster novae-angliae ‘Lou Williams’. In late spring or early summer, a light pruning can help promote bushier growth and prevent the plant from becoming leggy. Additionally, removing spent flowers can encourage continued blooming and prevent self-seeding, especially in cultivated garden settings.


Aster novae-angliae ‘Lou Williams’ offers a range of versatile uses, from ornamental purposes to wildlife habitats.

Ornamental Use

With its vibrant purple flowers and late-season blooming, ‘Lou Williams’ adds a captivating charm to gardens and landscapes. Its attractive blooms make it an ideal choice for borders, mixed perennial beds, and cottage gardens. It also serves as a stunning cut flower, adding a touch of elegance to floral arrangements and bouquets.

Wildlife Gardens

This native plant species plays a crucial role in supporting pollinators and beneficial insects. The nectar-rich flowers of Aster novae-angliae ‘Lou Williams’ attract butterflies, bees, and other pollinators, making it a valuable addition to wildlife gardens and naturalistic landscapes.


Aster novae-angliae ‘Lou Williams’ also holds significance in native plant conservation efforts. By cultivating and preserving native plant species, such as the New England Aster, gardeners and conservationists contribute to the preservation of biodiversity and ecosystem health.


The propagation of Aster novae-angliae ‘Lou Williams’ can be achieved through several methods, including division, seed sowing, and stem cuttings.


Dividing mature clumps of Aster novae-angliae ‘Lou Williams’ in early spring or fall can be an effective way to propagate the plant. The divided segments can be replanted in suitable locations, providing an opportunity to expand the presence of this captivating aster in the landscape.

Seed Sowing

Collecting and sowing seeds from mature Aster novae-angliae ‘Lou Williams’ plants can yield new generations of this stunning variety. When sowing seeds, it is essential to provide the appropriate conditions for germination, including adequate moisture, warmth, and light.

Stem Cuttings

Taking stem cuttings from healthy, non-flowering shoots of ‘Lou Williams’ can also serve as a method of propagation. With proper care and suitable growing conditions, these cuttings can develop into independent plants, inheriting the desirable traits of the parent plant.

Container Popularity

The compact and prolific nature of Aster novae-angliae ‘Lou Williams’ makes it well-suited for container gardening. Its vibrant purple blooms and relatively manageable size enable it to thrive in various container arrangements, adding a splash of color to patios, balconies, and outdoor living spaces. When selecting containers for ‘Lou Williams’, opt for spacious, well-drained pots, promoting healthy root development and overall plant vigor.

Container Common Diseases

While New England Asters are generally resilient, they may be susceptible to certain diseases, particularly when cultivated in containers.

Disease Diagnosis

Several common diseases that may affect Aster novae-angliae ‘Lou Williams’ in container settings include powdery mildew, aster yellows, and root rot. It is essential to monitor the plants for symptoms such as white powdery patches on the leaves (indicative of powdery mildew), yellowing or stunted growth (associated with aster yellows), and wilting or decayed roots (signs of root rot).

Common Pests

In addition to diseases, ‘Lou Williams’ Asters can also encounter pests that may impact their growth and flowering.

Pest Control

Common pests that may affect New England Asters include aphids, spider mites, and caterpillars. Regular inspection of the plants and prompt intervention, such as using insecticidal soap or horticultural oil, can help manage pest infestations and preserve the health of the Asters.

Botanist’s Tips

As a plant scientist, I have some valuable tips for caring for Aster novae-angliae ‘Lou Williams’ based on its growth habits and maintenance requirements.

  • Adequate sunlight is essential for robust growth and abundant flowering.
  • Regular deadheading can encourage prolonged blooming and prevent self-seeding in the garden.
  • Providing well-drained soil and adequate air circulation can help deter disease and pest issues.
  • When growing Aster novae-angliae ‘Lou Williams’ in containers, ensure proper drainage and choose the right pot size to accommodate its growth.

Fun Facts

Apart from its stunning appearance and ecological significance, Aster novae-angliae ‘Lou Williams’ has some intriguing facts and characteristics.

  • The specific epithet “novae-angliae” refers to New England, the native region of this aster.
  • New England Asters are known for their vivid purple blooms that add a burst of color to late-season gardens.
  • ‘Lou Williams’ is a named variety, recognized for its exceptional qualities and visual appeal in horticultural settings.
  • This perennial aster serves as an important food source for pollinators and contributes to biodiversity conservation efforts.

Links to External Resources

For additional information and resources on Aster novae-angliae ‘Lou Williams’, feel free to explore the following links:

  1. University of Minnesota Extension – Growing Asters in Minnesota Gardens
  2. The New England Wild Flower Society – Plant Conservation Programs
  3. The Royal Horticultural Society – New England Aster Cultivation and Care

In conclusion, Aster novae-angliae ‘Lou Williams’ (New England Aster) stands out as a captivating and valuable addition to gardens, landscapes, and conservation initiatives. Its vibrant purple blooms, ecological significance, and resilience make it a cherished perennial that offers an array of ornamental and ecological benefits. By understanding its cultural requirements, propagation methods, and potential challenges, gardeners and plant enthusiasts can fully appreciate and cultivate the beauty of this remarkable aster variety.

Picture of Peter Taylors

Peter Taylors

Expert botanist who loves plants. His expertise spans taxonomy, plant ecology, and ethnobotany. An advocate for plant conservation, he mentors and educates future botanists, leaving a lasting impact on the field.