Biennial or Perennial: Nice ferny foliage turns purple-black & adds great interest to the garden. A nice meadow plant that is vigorous & self-sows if allowed to seed. Blooms: spring-summer. Flat flower heads are white with pink bracts. Clump forming growth habit: 1.5' x 2', flowers to 3'. Exposure: sun/part shade. Water: moderate. USDA Z4-10.