I have found that the yarrow can be either of a small or large variety. The flowers are white and flatten out on the top of the plant looking like lacy cauliflower. Keep your eye out for the less common pink variety. It apparently is not native to Nova Scotia, but rather came over with the European settlers. I read (Griffin) that the leaves used to be used for tea, a tea which would relieve melancholy; or the leaves could be chewed for toothache.