two flies on top of common yarrow or achillea millefolium perennial flowering plant with bunch of small violet open blooming

achillea blooming bunch center common day devils erect flies flowering flowers garden gordaldo green herbaceous herbal leaf leaves local mans militaris millefolium nettle nosebleed old open pepper perennial plant planted plumajillo sanguinary seal small soldiers summer sunny surrounded thousand top two violet warm white woundwort yarrow