Yarrow (Achillea millefolium)
Yarrow is, perhaps, one of those flowers you walk by without a second look because it is so common but when you stop and take a really close look you find that the flower-head is not one flower but a hundred or so tiny flowers, all like little daisies.
The overall flower head can range from white to pink but, in general, is dirty white or, perhaps more kindly, cream. Popular with insects, Yarrow can be found in meadows, grasslands, hedgerows and roadsides, just about anywhere in fact. It is also a common weed of lawns and definitely not a gardeners friend.