Western Yarrow

Achillea millefolium

Western yarrow is a flat-topped white perennial flower with delicate, fern-like leaves. It is incredibly hardy and can be used as a drought–tolerant lawn substitute, even tolerant of mowing (though it won’t produce flowers if mowed). It has a long bloom season from mid-spring to mid-autumn, making it an excellent plant for butterflies and pollinators. Yarrow can be aggressive in yards and gardens, spreading by both seeds and rhizomes, so plant it accordingly.