Echinacea Purpurea – White Swan or Purple Coneflower – White Swan is native North America and a member of Asteraceae family of plants. Echinacea Purpurea – White Swan is a rhizomatous, clump-forming perennial that grows up to 1.20 meters and the flowers are hermaphroditic. It flowers in summer and fall with white flowers and yellow centers. Plant it in the sun but possible in partial shade as well in well-drained, humus rich soil. It is related to the sunflower family and can be propagated by divisions or root cuttings. It was used as medicine by American Indians and even today it is used in herbal medicine to prevent upper respiratory infections.