perennialN. America Native

Aromatic Aster

Symphyotrichum oblongifolium

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Essentials

At a Glance

Plant Type

Perennial

Height

24 inches

Width

24 inches

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7, 8, 9

Water

Moderate once established

Humidity

Average

Lifespan

Perennial

Native To

North America

Toxicity

Non-toxic to humans and pets

The Story

Plant Bio

Aromatic foliage on a bushy, mounding perennial. Produces profuse, daisy-like, violet-blue to purple flowers with yellow centers in late summer and fall. Highly attractive to pollinators. Valued for its late-season bloom, excellent drought tolerance, and resistance to powdery mildew, which plagues many other asters. Its foliage is aromatic when crushed.

Uses & Benefits:

Provides vibrant purple flowers that attract pollinators and add color to gardens.

Low-maintenance perennial suitable for borders and wildflower gardens.

Supports bees, butterflies, and other beneficial insects.

Marketplace

Where to Buy

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Planting

How to Grow

Tuck seeds into well-draining soil in early spring for best germination.
Mist cuttings regularly to maintain humidity during rooting.
Water consistently during the growing season to keep soil moist but not waterlogged.
Apply a balanced fertilizer in spring to promote healthy growth.
Prune back dead or damaged stems in late winter to encourage new growth.
Divide clumps every 3-4 years in early spring for rejuvenation.

Pro Tip

Use a sunny location with well-draining soil for vigorous growth and abundant blooms.

Keep It Thriving

Care Guide

Do

Ensure plenty of sunlight for optimal flowering 🌞
Water regularly, especially during dry spells 💧
Apply compost annually to enrich soil
Deadhead spent flowers to promote new blooms
Divide plants in early spring to maintain vigor

Don't

Avoid overwatering to prevent root rot ❌
Don’t neglect pruning dead or damaged stems
Avoid planting in poorly drained soil
Don’t fertilize late in the season to prevent weak growth

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Divide
Pinch
Winter Prep

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Wildflower meadow with vibrant purple bloomsInformal border with airy, flower-laden stemsPollinator-friendly garden area

Companion Plants

Echinacea purpurea Rudbeckia hirta Coreopsis tinctoria Salvia nemorosa Lavandula angustifolia

Multiply

Propagation Methods

Good to Know

Common Questions

Aromatic Aster questions

What zones can Aromatic Aster grow in?

Aromatic Aster is hardy in USDA Zones 4–9. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Aromatic Aster deer resistant?

Yes — Aromatic Aster is rated deer-resistant. Deer typically pass it over, though extreme hunger can override any plant's defenses.

When does Aromatic Aster bloom?

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

Does Aromatic Aster need full sun?

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

Is Aromatic Aster drought tolerant?

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