These perennials resemble astilbe, with slowly spreading clumps of finely divided leaves topped in summer by plumy, branched clusters of tiny white or cream flowers. Good in perennial borders or at edge of woodland against a dark background.Aruncus dioicus
Native to Eurasia and to southeastern and south-central Alaska. Grows to 6 (sometimes 7) ft. tall, 4 ft. wide, with foamy plumes of white flowers in 20-in., much-branched clusters.
Native to low, wet areas of eastern North America. Fairly fast growth to 60 ft. tall, 40 ft. wide, or ...
Native to eastern North America. To 1–3 ft. tall, 2 ft. wide, with leaves to 4 in. long and flow...
Native to eastern North America, this upright grower reaches 15 to 30 ft. tall, spreading much wider b...