Flowers. Yarrow Fairy Achillea millefolium, commonly known as yarrow or common yarrow, is a flowering plant in the family Asteraceae. It is native to the British Isles. In its wild form it is considered a weed. However, Achillea millefolium is cultivated as an ornamental plant. It is also used in herbal medicine, as a foodstuff and to produce an alcoholic beverage. All Flower Fairies are provided mounted, in conservation quality antique white mount-board, size 10×8 inches, ready to frame. .