Echinacea purpurea "White Swan" (White Purple Coneflower)
Echinacea purpurea "White Swan" is the white variety of Purple Coneflower, but "White Swan" grows a little shorter - to about three feet - than its purple counterpart, but the flowers are large, and there is the same prominent center cone. Its bright color really stands out in the border. Sun/part shade. Zones 4-8. Quarts.