Deinandra corymbosa

Coastal tarweed

Family: Asteraceae · Type: annual · Native

Coastal tarweed is a California native annual found in northern coastal bioregions including coastal and central California in grasslands, dunes, scrub openings, and disturbed sites at elevations below 600 meters. Flowering from March to November, this plant produces bright deep yellow flowers in small heads with ray flowers 4 to 8 millimeters long. Growing 15 to 100 centimeters tall with slender branching stems, it has a distinctive glandular and soft-hairy appearance. Its lower leaves are pinnately lobed, covered in coarse to soft hairs and sometimes bearing stalked glands. The disk flowers have unusual dark purple to red anthers, creating a striking contrast with the bright yellow ray flowers.

Habitat: Grassland, openings in scrub or woodland, dunes, disturbed sites

Bloom period: Mar-Nov

Elevation: < 600 m

Bioregions: NCo, w NCoRO, CCo, SnFrB, w SCoRO.

California counties: Monterey, Sonoma, Mendocino, Napa, San Mateo, Contra Costa, Alameda, Marin, Santa Cruz, San Luis Obispo, Santa Clara, San Francisco, Kern, Santa Barbara, Humboldt, Fresno

Data from The California Species Project — 14,000+ California species with verified data from CNPS, CDFW, USFWS, Jepson eFlora, Cal-IPC, and more.