Species

Aster dumosusBushy Aster

3 other cultivars

perennialN. America Native

Bushy Aster

Aster dumosus 'Lady in Blue'

The Story

Plant Bio

Symphyotrichum dumosum, commonly known as bushy aster, is a herbaceous perennial native to eastern and central North America that forms dense, mounding clumps of slender stems. The species features narrow, linear to lanceolate green leaves and produces abundant small, daisy-like flower heads with yellow centers from late summer into fall.

'Lady in Blue' is distinguished by its compact, highly branched growth habit that reaches only 12 to 20 inches in height. The cultivar produces dense clusters of lavender-blue ray florets surrounding bright yellow central discs, creating a solid mound of color late in the growing season.

Uses & Benefits:

Provides a dense, compact mound of lavender-blue flowers late in the season when other perennials fade.

Adapts well to various soil types, including clay, and fits easily into small gardens or containers due to its compact size.

Serves as a crucial late-season nectar source for native bees, butterflies, and other pollinators.

SpeciesAster dumosusBushy Aster

Essentials

At a Glance

Plant Type

Perennial

Height

20"

Width

16"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8

Water

Medium

Humidity

Moderate

Lifespan

Perennial

Native To

North America

Toxicity

Non-toxic

Bloom period

Late summer – Fall

In flower about 4 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade with fertile, well-drained soil.
Dig a hole twice the width of the root ball and set the plant at the same depth it was growing in its container.
Water thoroughly after planting and maintain consistent soil moisture, especially during dry summer spells to prevent lower leaf drop.
Apply a light layer of compost or balanced slow-release organic fertilizer in spring, avoiding high-nitrogen mixes.

Pro Tip

Pinch back the growing tips once or twice in late spring to prevent the stems from flopping and to maximize bloom density. Divide the crown every two to three years in early spring to prevent the center from dying out and to maintain vigor.

Keep It Thriving

Care Guide

Do

Pinch back stems in late spring to encourage a bushier, self-supporting habit.
Divide the plant every two to three years in spring to rejuvenate the crown.
Water at the base of the plant to keep foliage dry and reduce fungal risks.

Don't

Do not allow the soil to dry out completely during summer, which causes lower foliage to die and drop.
Do not apply high-nitrogen fertilizers, which lead to weak, leggy stems prone to lodging.
Do not prune heavily into the old, leafless woody base of the plant.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Fertilize
Pest Check
Pinch
Spring Cleanup

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Border EdgingCottage GardensMass PlantingsButterfly GardensContainer Gardening

Companion Plants

Solidago Echinacea purpurea Rudbeckia fulgida Schizachyrium scoparium

Multiply

Propagation Methods

Good to Know

Common Questions

Bushy Aster questions

What zones can Bushy Aster grow in?

Bushy Aster is hardy in USDA Zones 4–8. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

When does Bushy Aster bloom?

Bushy Aster typically blooms in late summer through fall. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Bushy Aster need full sun?

Bushy Aster does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.

Is Bushy Aster drought tolerant?

Yes — once established (usually after the first full season), Bushy Aster handles dry spells with minimal watering. Water deeply its first year to build the root system that makes that possible.