10-14" tall x 10-12" wide. Achillea New Vintage™ Violet (New Vintage™ Violet Yarrow) is a long blooming selection with unusual, eye-catching plum-violet flowers that hold their color. A small plant at maturity, this perennial is useful for planting around taller perennials and in pots as a companion plant for annuals. The nectar-rich flowers are excellent for attracting butterflies that like to land on the flat-topped umbels (flowers). Easy-to-grow and very cold hardy, this plant is outstanding for northern gardens. Unlike common varieties of fern-leaf Achillea, New Vintage™ Violet does not reseed itself.