Perennial. 'White Swan' is the perfect name for this graceful echinacea. It is a natural selection from white-flowered variations of the common purple echinacea. Its flowers attract butterflies and other pollinators, while birds enjoy the seeds. If left standing in winter, the cone-like seed heads also add a nice architectural touch to the winter garden. A long lasting cut flower, it adds a sparkle of white and a wild touch to floral arrangements.