Yarrow is a perennial native to Europe and western Asia, but naturalized throughout North America.  The attractive dark green or grayish leaves are fern-like and aromatic.  Flowers are white or cream-colored and occur in clusters at the top of the stems. Yarrow needs full sun and can adapt to moist or dry conditions.  Once established, it is drought-tolerant.  For best growth, it prefers light, sandy soils.  It is browsed by small mammals, deer and sheep, but is rarely palatable to cattle.  Other uses include soil stabilization, mine land revegetation, roadside beautification and landscaping.  Yarrow should be planted during the moistest of growing seasons.