[Wikipedia] Range, Naturalization, Weed Status: Ambrosia confertiflora is native to much of northern Mexico (from Sonora to Tamaulipas) and the southwestern United States from California east as far as Kansas, Oklahoma, and central Texas.[5] It is also naturalized in various other regions, and has been declared a noxious weed in Australia[6][7][8] and in Israel.[9] It grows in disturbed sites. (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]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/28/2025).
