Achillea millefolium (yarrow)

Yarrow is an erect perennial that displays delicate feathery leaves with beautiful, scented white or pastel-colored umbel flowers. Growing to about 2–3' tall and wide, yarrow does best in full sun, dry to medium moisture, and well-drained soils. It blooms June to September. It is deer and drought tolerant. Yarrow is a great addition for any naturalized or meadow areas, and does well as a cut or dried flower. Note: Yarrow is toxic to dogs and cats.

Yarrow is native to many temperate regions of the Northern Hemisphere. It is popular in butterfly gardens and is considered an especially useful companion plant in the garden, attracting beneficial insects and repelling some pests. Several cavity-nesting birds, including the common starling, use yarrow to line their nests, possibly as a way to inhibit the growth of parasites. Yarrow is also a food source for many insects, including butterflies, moths, and beetles. Because of its resistance to drought, it can be planted to combat soil erosion. 

Photo by Kathy Thornton