Updated: May 3, 2024

False aster (Boltonia asteroides) is a beautiful perennial plant that produces clusters of daisy-like flowers in late summer to early fall. With its charming blooms and easy-to-care-for nature, false aster is a popular choice for gardeners looking to add color and interest to their outdoor spaces.

If you’re limited on garden space or want to enjoy false asters on a patio or balcony, growing them in pots is a great option. In this guide, we will walk you through the steps to successfully grow false aster plants in a pot.

Choosing the Right Pot

When it comes to selecting a pot for your false aster plant, opt for a container that is at least 12 inches in diameter and has drainage holes at the bottom. False asters have deep root systems, so choose a pot that provides ample room for their roots to grow.

Additionally, consider the material of the pot. Terra cotta and ceramic pots are popular choices as they are breathable and help prevent waterlogging, which can be detrimental to false asters.

Soil Mix

False asters thrive in well-draining soil that is rich in organic matter. A good potting mix for false asters can be created by combining equal parts of peat moss, perlite, and compost. This mix will provide the necessary nutrients and drainage for healthy growth.

Fill the pot with the soil mix, leaving enough space at the top for planting the false aster.

Planting False Aster

When planting false aster in a pot, it’s essential to handle the roots gently to avoid damaging them. Remove the plant from its nursery container and loosen the roots slightly before placing it in the center of the pot. Fill in around the plant with more soil mix, ensuring that the crown of the plant is level with the surface of the soil.

Water thoroughly after planting to help settle the soil around the roots.

Sunlight and Watering

False asters prefer full sun to partial shade, so place your potted plant in a location where it will receive at least 6 hours of sunlight per day. Be mindful of watering needs, as potted plants tend to dry out more quickly than those planted in the ground. Water your false aster regularly, keeping the soil consistently moist but not waterlogged.

To check if your plant needs water, insert your finger into the soil up to your knuckle. If it feels dry, it’s time to water.

Fertilizing

To promote healthy growth and abundant flowering, fertilize your false aster plant every 4-6 weeks during the growing season. Use a balanced fertilizer or one specifically formulated for flowering perennials. Follow the instructions on the package for proper application rates.

Avoid over-fertilizing, as this can lead to excessive foliage growth at the expense of flowers.

Pruning and Deadheading

To encourage continuous blooming and maintain a tidy appearance, deadhead spent flowers regularly. Simply pinch off faded blooms as they occur to promote new flower production.

In late fall or early spring, prune back any leggy or overgrown stems to encourage bushier growth and improve overall plant health.

Winter Care

False asters are hardy plants that can withstand cold temperatures, but potted plants are more vulnerable to freezing during winter months. To protect your false aster from frost damage, move the pot to a sheltered location or cover it with burlap or frost cloth when temperatures drop below freezing.

Reduce watering during winter dormancy but ensure that the soil does not completely dry out.

Pests and Diseases

False asters are relatively pest-resistant, but they can occasionally be susceptible to aphids or powdery mildew. Keep an eye out for any signs of pests or diseases and treat them promptly with insecticidal soap or fungicides if necessary.

Regularly inspect your plants for any issues to catch them early and prevent them from spreading.

Conclusion

Growing false aster plants in pots is a rewarding experience that allows you to enjoy their beauty even in small spaces. With proper care and attention to their needs for sunlight, water, and nutrients, you can cultivate healthy and vibrant false asters that will brighten up your outdoor living areas.

Follow this guide to growing false aster plants in pots, and soon you’ll be rewarded with lovely blooms that will attract pollinators and bring joy to your gardening endeavors.