How much sun does Eurybia radulina need?

Eurybia radulina grows best in part shade conditions.

When does Eurybia radulina bloom?

Eurybia radulina blooms in July, August, and September.

Where is Eurybia radulina native?

Eurybia radulina is native to CA, OR, WA, per the World Checklist of Vascular Plants (Kew).

What butterflies or moths does Eurybia radulina host?

Eurybia radulina is a larval host plant for pearl crescent.

Eurybia radulina

Name: Pollinator Patch
Author: Pollinator Patch

Last reviewed: September 2026

Eurybia radulina is a perennial forb native to CA, OR, WA. It blooms in July, August, and September. The flowers draw bees and butterflies.

Toxicity unknown

Eurybia radulina 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

part shade

Water

medium

Size

12"–30" H × 12"–24" W

Bloom

Jul, Aug, Sep

Native to

CA, OR, WA

Pollinators

bees, butterflies

Before you buy

Your city may pay you to plant this

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

Coast Range Marine West Coast Forest Northwestern Forested Mountains Sierra Nevada Central California Foothills and Coastal Mountains North American Deserts Southern California/Northern Baja Coast

A perennial forb with rough-textured, toothed leaves and loose sprays of lavender-blue, daisy-like flowers in late summer. Grows in the dry shade of coniferous forest understory, spreading slowly by rhizomes.

Growing Eurybia radulina

Grow Eurybia radulina in part shade and medium water. Mature plants reach 12 to 30 inches tall and spread 12 to 24 inches wide.

Wildlife value

Host plant for pearl crescent.

The late-season blooms provide nectar for bees and butterflies, and the foliage serves as a larval host plant for pearl crescent butterflies.

Common questions

How much sun does Eurybia radulina need?: Eurybia radulina grows best in part shade conditions.
When does Eurybia radulina bloom?: Eurybia radulina blooms in July, August, and September.
Where is Eurybia radulina native?: Eurybia radulina is native to CA, OR, WA, per the World Checklist of Vascular Plants (Kew).
What butterflies or moths does Eurybia radulina host?: Eurybia radulina is a larval host plant for pearl crescent.

Native range data from the World Checklist of Vascular Plants (Kew). 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

These come up on almost any plant. Each guide lists the likely causes in the order they are worth ruling out, with one thing to check before you act on any of them, and links to the source it came from.

See all plant problem guides

Ready to grow Eurybia radulina? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.

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