Anemone sylvestris, sometimes called Snowdrop Anemone, has delicate, single white blossoms with soft yellow stamens that bloom on 18" wiry stems in mid to late spring. Anemone sylvestris may occasionally rebloom in the fall. Anemone flowers are followed by fluffy white seed heads. Anemone sylvestris is grown best in part shade and organic, rich soil. This perennial will tolerate drier soils once established. A European native, Snowdrop windflower is rhizomatous and may be very aggressive in loose soils.