Set plants 12 to 24 inches apart, depending on species. Choose a shady or partly shaded location, where the soil is rich, humusy and well-drained. D. x ‘Luxuriant’ can be grown in full sun also.
Plants should be watered during periods of drought. We recommend a summer mulch to help conserve moisture, as well as a protec tive mulch in winter. D. spectabilis tends to go dormant in midsummer, so plant a companion plant (i.e. Anemone vitifolia) and avoid accidentally digging up the plants. It is unlikely that division will become necessary, but if it does, divide in spring.