[Wikipedia] Habitat: This plant thrives in anthropogenic habitats, such as railways, roadsides and disturbed land, as well as in woodlands, dry scrubland, ledges and bluffs. (link added by Mary Ann Machi)
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: 11/21/2024).