How much sun does Eaton's aster need?

Eaton's aster grows best in full sun conditions.

When does Eaton's aster bloom?

Eaton's aster blooms in August, September, and October.

Where is Eaton's aster native?

Eaton's aster (Symphyotrichum eatonii) is native to AZ, CA, CO, ID and 7 more states, per vouchered herbarium specimen records and regional native plant society lists.

What pollinators does Eaton's aster attract?

Eaton's aster draws bees and butterflies.

Eaton's aster

Name: Pollinator Patch
Author: Pollinator Patch

Symphyotrichum eatonii

Last reviewed: October 2026

Eaton's aster (Symphyotrichum eatonii) is a perennial forb native to AZ, CA, CO, ID and 7 more states. It blooms in August, September, and October. The flowers draw bees and butterflies.

Toxicity unknown

Eaton's aster (Symphyotrichum eatonii) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.

Light

full sun

Water

medium

Size

18"–48" H × 12"–24" W

Bloom

Aug, Sep, Oct

Native to

AZ, CA, CO, ID and 7 more states

Pollinators

bees, butterflies

Before you buy

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Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 458 programs across 44 states, each with a link to the provider and the date we last checked it.

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Browse plants for this ecoregion

Sierra Nevada Northwestern Forested Mountains North American Deserts Central Basin and Range Southern Rockies

Upright, branching perennial with narrow leaves and abundant small white to pale purple daisy-like flowers in late summer and fall, growing along streambanks and in moist meadows.

Growing Eaton's aster

Grow Eaton's aster in full sun and medium water. Mature plants reach 18 to 48 inches tall and spread 12 to 24 inches wide.

Wildlife value

An important late-season nectar source for native bees and migrating butterflies, including monarchs.

Common questions

How much sun does Eaton's aster need?: Eaton's aster grows best in full sun conditions.
When does Eaton's aster bloom?: Eaton's aster blooms in August, September, and October.
Where is Eaton's aster native?: Eaton's aster (Symphyotrichum eatonii) is native to AZ, CA, CO, ID and 7 more states, per vouchered herbarium specimen records and regional native plant society lists.
What pollinators does Eaton's aster attract?: Eaton's aster draws bees and butterflies.

Native range data from vouchered herbarium specimen records and regional native plant society lists. Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

If something looks wrong

Common plant problems, and what to check first

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