This claims goldenrod as the state flower, but it seems the story is not really so clear-cut, and a variety of other states also claim it. Susuki is a grass, so to the casual observer there's no distinction between the flower and seed stages. Certainly, with its creamy plumes, it's immensely photogenic. Goldenrod flourishes here, but Susuki flourishes there. Sometimes the two seem quite happy to coexist.
Biology is like that, much less clearcut than war films.