[Wikipedia] Native Range, Naturalization: Argyranthemum foeniculaceum, called the Canary Island marguerite, is native to the Canary Islands, (part of Spain).[3][4] It is widely cultivated as an ornamental and naturalized in California[5][6] and Australia. (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: 03/30/2025).