A tall, erect, bushy, clump-forming plant typically growing 4-6' high and 2-4 feet wide adorned with dark green foliage and showy, plume-like spikes of tiny, cream colored flowers which rise well above the foliage in early to mid summer, creating a bold effect. This rose family member is somewhat similar in appearance to astilbe. Dioecious (separate male and female plants) as the species name suggests. Plants with male flowers (numerous stamens per flower) produce a showier bloom than plants with female flowers (three pistils per flower).

Easily grown in average, medium to wet, well-drained soil in full sun to part shade. Plant as a specimen or in groups along streams or water gardens.  Hardy to zone 3. Blooms May-June.   Ships bareroot