Best grown in moist, slightly acidic, organically rich, well-drained loams in full sun to part shade. Site in locations protected from strong winds, but avoid southern exposures in full sun close to houses where buds and foliage may be induced to open too early in spring. Plants appreciate consistent and regular moisture throughout the year, and are generally intolerant of soil extremes (dry or wet). Mulch root zone. Plants are difficult to transplant once established in the landscape.