NatureServe Conservation Status
Rounded Global Status Rank: G3 - Vulnerable
Reasons: Ambrosia chenopodiifolia is known from southern California, where there are only about 10 sites, south into Baja, Mexico where there are probably numerous sites. The number of plants is only known for California where there are 1400 (as of 2005), but there are likely to be many thousands south of the border. The threats are fairly severe in CA; Baja threats are unknown.
Environmental Specificity: Broad. Generalist or community with all key requirements common.
Comments: Pretty broad, occurring in coastal scrub from southern CA south far into Baja, Mexico.