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Taxon  Report  
Brassica rapa  L.
Common mustard,   Field mustard,   Rape mustard
Brassica rapa is an annual herb that is not native to California.
Cal-IPC rating: limited
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Observation Search
~1999 records in California
redone or more occurrences
within a 7.5-minute quadrangle

Bloom Period
Subspecies and Varieties:
Genus: Brassica
Family: Brassicaceae  
Category: angiosperm  
PLANTS group:Dicot
Jepson eFlora section: eudicot

Wetlands: Occurs usually in non wetlands, occasionally in wetlands

Habitat: disturbed

Communities: weed, characteristic of disturbed places

Name Status:
Accepted by JEF + PLANTS

Alternate Names:
JEFBrassica campestris
Information about  Brassica rapa from other sources

[Wikipedia] Probably originated 4000 to 6000 years ago in the Hindu Kush are: The origin of B. rapa, both geographically and any surviving wild relatives, has been difficult to identify because it has been developed by humans into many types of vegetables, is now found in most parts of the world, and has returned to the wild many times as a feral plant. A study of genetic sequences from over 400 domesticated and feral B. rapa individuals, along with environmental modelling, has provided more information about the complex history. These indicate that the ancestral B. rapa probably originated 4000 to 6000 years ago in the Hindu Kush area of Central Asia.... (contributed by Suzanne L. Weakley)

This species is native to Eurasia, but has spread all over the w: Field mustard is an upright winter annual or biennial that is a member of the mustard family (Brassicaceae).... This species is native to Eurasia, but has spread all over the world and is now naturalized throughout much of North America. It grows from sea level to 5,000 ft..... (contributed by Suzanne L. Weakley)

Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2024. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/22/2024).