Tall perennial with purple or cream colored flowers in terminal clusters. Prefers full sun and moist soil, tolerates salt spray and wind. Cold hardy. Native to RI. 18-36”.
Larry Allain. USGS NWRC
Robert H. Mohlenbrock. USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln, NE. Courtesy of USDA NRCS Wetland Science Institute