The Rosy Yarrow (Achillea)
Highly popular in the Victorian flower garden, the Rosy Yarrow, or Achillea aspelnifloria, graced many a flower border (it was distinct from the British Achillea millefolium).
Cultivation was relatively simple, the plant requiring only good sun. It could be increased easily by dividing root stock in spring, and looked particularly good when planted in a bed of lilies, as the rosy yarrow could conceal much of the lily stems.
Information and image taken from F. Edward Hulme and Shirley Hibberd, Familiar Garden Flowers (Cassell, Peter, Galpin and Co.: London: c. 1890), 5 vols.