Yarrow
Achillea millefolium
Blooms May-July
Yarrow is an erect herbaceous perennial plant with a spreading rhizomatous growth, white flowers on one to several stems 11 to 40 inches high. A useful companion, repelling some pest insects while attracting beneficial ones. Sun to partial shade, dry soil.
PHOTO CREDIT: Jitaeri [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)]