A hardy, shrubby chrysanthemum native to Japan, Nipponanthemum nipponicum, having flowers with white ray florets and greenish-yellow discs, and grown as an ornamental perennial, especially in Japan and the U.S.
Origin
1930s.
Definition of Nippon daisy in US English:
Nippon daisy
(also Nippon chrysanthemum, Nippon oxeye daisy)
noun
US
A hardy, shrubby chrysanthemum native to Japan, Nipponanthemum nipponicum, having flowers with white ray florets and greenish-yellow discs, and grown as an ornamental perennial, especially in Japan and the U.S.