Sinapis alba

White mustard

Family: Brassicaceae · Type: perennial · Not Native

White mustard is a naturalized plant found in the central coastal, southern coastal, and northern coastal interior coast ranges in fields and disturbed areas at elevations below 1,500 meters. Flowering from March to September, this plant produces pale yellow flowers 8 to 12 millimeters wide with delicate petals. Growing 2.5 to 10 meters tall with hairy stems, it develops robust and spreading vegetation. Its leaves are pinnately lobed with 1 to 3 pairs of lateral lobes, ranging 5 to 14 centimeters long and varying from oblong to ovate in shape. The fruit develops in elongated pods 2 to 4.2 centimeters long with spreading pedicels.

Habitat: Fields, disturbed areas

Bloom period: Mar-Sep

Elevation: < 1500 m

Bioregions: NCoRH, CCo, SCo

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