Achillea millefolium (Yarrow)
I used to take this native Yarrow for granted: it isn't one of the showy colors one sees in garden centers, and it is seen so frequently that some might consider it weedy. It led me to ask, why would one want so "lowly a creature" in a refined flower garden? I found out I was so wrong when one appeared in my rock garden out of nowhere; now I am able to see that this common yarrow is not so common after all. Its feathery, green foliage and large white flower clusters are uncommonly beautiful. It's amazing how much more desirable it is without all the road dust and without competition from taller and more aggressive wildflowers. This hardy native grows from two to three feet in sun. Zones 3-8. Quarts.