I have some Yarrows in my garden. According to crossword clue solver website, a Yarrow is an ubiquitous strong-scented mat-forming Eurasian herb of wasteland, hedgerow or pasture having narrow serrate leaves and small usually white florets; widely naturalized in North America. Other varieties of yarrow flowers are pink, red, and yellow. I only have the white ones.
They are beautiful in bloom, the only problem with this kind of plants is that it would took over the space of other plants that is growing near it. So I have to constantly thin them out.