Bloomipedia
Seaside daisy (Erigeron glaucus)
Photo: Zoltán Stekkelpak via iNaturalist · CC0 · resized

Flower profile

Seaside daisy

Erigeron glaucus

Native to California

Seaside daisy is a wildflower that USDA PLANTS lists as native in the lower 48 states. In California it's most often seen in bloom in March–November.

2states
11,558CA sightings*
12,255U.S. sightings*

*iNaturalist research-grade observations, as of October 17, 2026.

On our lists for: California

Quick look

Erigeron glaucus is a species of flowering plant in the family Asteraceae known by the common name seaside fleabane, beach aster, or seaside daisy. It is native to the West Coast of the United States.

  • It belongs to the Asteraceae family. iNaturalist
  • USDA PLANTS describes it as an herb (forb) with a perennial life cycle. USDA PLANTS
  • USDA PLANTS lists it as native in the lower 48 states and records it in 2 states. USDA PLANTS
  • NatureServe lists it as native to California. NatureServe
  • In California, most iNaturalist sightings of it in flower come in March–November. iNaturalist
  • iNaturalist has 11,558 research-grade sightings of it in California, ranking #78 among the 110 flowers on our California list. iNaturalist

Seaside daisy gift ideas

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When does it bloom?

In California, most flowering sightings come in March–November.

Flowering records by month in California (iNaturalist research-grade observations marked “Flowering”) (1,346 records)

Conservation status

Federal (U.S. ESA)
Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
NatureServe global
G4 Apparently secure worldwide. NatureServe
California
Not listed Not on California state-listed endangered, threatened and rare plants (14 CCR § 670.2), per CDFW's CNDDB list (July 2026). NatureServe: SNR, not yet ranked in California. CNDDB listed plants (July 2026)
Rare elsewhere
No other U.S. state ranks it S1, S2, SH or SX.

Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.

Can you eat it?

For peopleNot well documented

None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.

For petsNot well documented

It isn't on the ASPCA plant list. For context only: ASPCA lists a related species, Erigeron speciosus (“Fleabane”), as toxic to dogs and cats. That doesn't tell us about this species, so keep pets away to be safe. ASPCA

🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.

Where does it grow?

USDA PLANTS records seaside daisy in 2 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

California, Oregon.

California counties with USDA records: Del Norte, Humboldt, Los Angeles, Marin, Mendocino, Monterey, San Francisco, San Luis Obispo, San Mateo, Santa Barbara, Santa Cruz, Sonoma, Ventura.

More California flowers

Common yarrow (Achillea millefolium)

Common yarrow

Achillea millefolium

Native

🌼 Blooms in CA: March–August
Bull thistle (Cirsium vulgare)

Bull thistle

Cirsium vulgare

Introduced

🌼 Blooms in CA: June–October
Brittlebush (Encelia farinosa)

Brittlebush

Encelia farinosa

Native

🌼 Blooms in CA: January–December

Sources