Yarrow: Weed, Groundcover or Herb?
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Posted by Robert Dailey May 25, 2007 |
Common yarrow (Achillea millifolium), is included in “Weeds of The West,” considered by many to be the last word on weeds in arid North American areas, and throughout most of the western United States.
However, some species of yarrow is considered by some to be a noble herb and an excellent groundcover. In addition, it has an old and rich history.
Yarrow pollen has been found in Neanderthal burial areas. Yarrow is also associated with the most genuine method of casting the I Ching.
Even its scientific name, Achillea, is believed by some to be derived from the Greek hero, Achilles, who, Homer tells us, used the plant to staunch the bleeding from wounds suffered by his fellow warriors.
Regardless of its history, some species of yarrow are being used as groundcovers, particularly wooly yarrow (Achillea tormentosa).
Like most yarrows, wooly yarrow responds well to dry, sandy soil. It will grow to about eight inches tall, and the flower clusters are about two inches wide. The flowers remain for several weeks.
The foliage of all yarrow is grayish-green and fernlike, covered with wooly hairs. Numerous flower heads are actually disk-like florets, surrounded by five other florets. Each tiny flower resembles a daisy.
It will bloom from June through September.
Cultivars of wooly yarrow include Maynard’s Gold and Aurea.
Other types of yarrow tend to grow taller, but some make excellent covers in rock gardens and along paths.
Even common yarrow (A. millifolium) is an attractive plant when planted with other native plants, or even when standing alone. It can grow up to three feet high
Greek yarrow (A. ageratifolia), is a smaller plant and can grow up to 11 inches.
I have grown yarrow. I like the foliage, the pungent smell, and the way it will cling to just about any piece of soil, no matter how dry, hard, and destitute of any nutrients.
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