Description
Grow in medium to wet, well-drained soils in full sun to part shade. Best in full sun. Tolerates a wide range of soils, but prefers moist, humusy ones. Plants spread by root suckers to form colonies. Prune suckers as they appear unless naturalizing is desired. Plants also spread freely by self-seeding in optimum conditions. A large number of late winter pruning options include (a) pruning out dead or weakened stems, (b) shortening one year stems or (c) cutting back to the ground to rejuvenate. Unpruned plants can rapidly become unattractive and weedy in appearance. (Courtesy of Missouri Botanical Garden Plant Finder)
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