How much sun does Suisun Marsh aster need?

Suisun Marsh aster grows best in full sun conditions.

When does Suisun Marsh aster bloom?

Suisun Marsh aster blooms in August, September, and October.

Where is Suisun Marsh aster native?

Suisun Marsh aster (Symphyotrichum lentum) is native to CA, per the World Checklist of Vascular Plants (Kew).

What pollinators does Suisun Marsh aster attract?

Suisun Marsh aster draws native bees, butterflies, and syrphid flies.

Suisun Marsh aster

Name: Pollinator Patch
Author: Pollinator Patch

Symphyotrichum lentum

Last reviewed: October 2026

Suisun Marsh aster (Symphyotrichum lentum) is a perennial forb native to CA. It blooms in August, September, and October. The flowers draw native bees, butterflies, and syrphid flies.

Toxicity unknown

Suisun Marsh aster (Symphyotrichum lentum) 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

high

Size

24"–48" H × 18"–36" W

Bloom

Aug, Sep, Oct

Native to

Pollinators

native bees, butterflies, syrphid flies

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Browse plants for this ecoregion

Sierra Nevada Central California Foothills and Coastal Mountains Central California Valley

A rare, rhizomatous aster restricted to brackish tidal marsh, with narrow leaves and open sprays of pale lavender-purple, daisy-like flowers in fall. Forms loose colonies in wet, saline soils.

Growing Suisun Marsh aster

Grow Suisun Marsh aster in full sun and high water. Mature plants reach 24 to 48 inches tall and spread 18 to 36 inches wide.

Wildlife value

Its fall bloom is an important late-season nectar source for native bees and butterflies in a specialized marsh habitat.

Common questions

How much sun does Suisun Marsh aster need?: Suisun Marsh aster grows best in full sun conditions.
When does Suisun Marsh aster bloom?: Suisun Marsh aster blooms in August, September, and October.
Where is Suisun Marsh aster native?: Suisun Marsh aster (Symphyotrichum lentum) is native to CA, per the World Checklist of Vascular Plants (Kew).
What pollinators does Suisun Marsh aster attract?: Suisun Marsh aster draws native bees, butterflies, and syrphid flies.

Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.

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