Best grown in organically rich, humusy, medium moisture, well-drained soils in full sun to part shade. Scorch and general foliage decline may occur if soils are allowed to dry out. When grown in full sun, consistent moisture is particularly important. Remove stems of faded flowers to encourage additional bloom. Some gardeners prefer to remove flower stems before flowering if plants are being grown as ground covers for their foliage texture and color. Foliage is essentially evergreen in warm winter climates, but the amount of retained foliage color in cold winter climates depends in large part upon the severity of the temperatures. In cold winter climates, a winter mulch applied after the ground freezes will help prevent root heaving. Divide clumps in spring every 3-4 years.