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Best grown in organically rich, fertile, medium moisture, well-drained soils in full sun. Performs well in average garden soils as long as drainage is good. This is a cold weather plant that needs a period of winter dormancy, and generally will not grow well south of USDA Zone 7. It is generally intolerant of the high summer heat and humidity in the deep South. Mulch in winter until well established. Tends to self-seed, but self-seeded plants may not come true. Therefore, it is best to remove stems of spent flowers before seed forms. Propagation by root cuttings is relatively easy, but plants should otherwise be left undisturbed.