Yarrow – or Achillea – will brighten up the garden from early summer to almost September! In open, sunny areas with well drained soil you will find that it is quite drought tolerant once established. The fern-like leaves will support the flower stem on which hundreds of tiny flowers appear on tightly packed flower clusters.
I have seen butterflies flock to my Yarrow and have also used it in dried arrangements. It can also be used for fresh cuttings. Some varieties may tend to spread more than others. The common yarrow can be found even up in the Boundary Waters growing in amongst the rocky shoreline.