Bloomipedia
Coastal goldenbush (Isocoma menziesii)
Photo: Irene via iNaturalist · CC0 · resized

Flower profile

Coastal goldenbush

Isocoma menziesii

Coastal goldenbush (Isocoma menziesii) is a low shrub in the Asteraceae family, native in the lower 48 states, blooming mostly July–November across the U.S.

Native to California

Coastal goldenbush is a flowering plant that USDA PLANTS lists as native in the lower 48 states. In California it's most often seen in bloom in July–November.

1states where USDA records it
13,829CA sightings*
13,829U.S. sightings*

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

On our lists for: California

Quick look

Isocoma menziesii is a species of flowering plant in the family Asteraceae, known by the common name Menzies' goldenbush.

  • It belongs to the Asteraceae family. iNaturalist
  • USDA PLANTS describes it as a subshrub with a perennial life cycle. USDA PLANTS
  • USDA PLANTS lists it as native in the lower 48 states and records it in 1 states. USDA PLANTS
  • NatureServe lists it as native to California. NatureServe
  • In California, most iNaturalist sightings of it in flower come in July–November. iNaturalist
  • iNaturalist has 13,829 research-grade sightings of it in California, ranking #56 among the 178 flowers on our California list. iNaturalist

When does it bloom?

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

Flowering records by month in California (iNaturalist research-grade observations marked “Flowering”) (962 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.

🌿 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 coastal goldenbush in 1 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

California.

California counties with USDA records: Fresno, Inyo, Kern, Kings, Los Angeles, Merced, Monterey, Orange, Riverside, San Benito, San Bernardino, San Diego, San Francisco, San Luis Obispo, San Mateo, Santa Barbara, Santa Clara, Solano, Ventura.

Names, range and relatives

County records: USDA PLANTS lists it in 19 counties across 1 states; the most are in California (19).

More from the Asteraceae family (212 on Bloomipedia; most observed first): Common yarrow, Goldenrods, White snakeroot, Sunflowers, Chicory, Black-eyed Susan, Bull thistle, Common dandelion.

More California flowers

Common yarrow (Achillea millefolium)

Common yarrow

Achillea millefolium

Native

🌼 Blooms in CA: April–July
California brittlebush (Encelia californica)

California brittlebush

Encelia californica

Native

🌼 Blooms in CA: January–April
Brittlebush (Encelia farinosa)

Brittlebush

Encelia farinosa

Native

🌼 Blooms in CA: January–April

Sources