Helleborus Oriental Rose are an excellent small shrub to consider in heavily shaded areas. Bright vibrant flowers during Winter and spring, in a range of colors.
They do like mulching to keep fairly moist, and a liberal about of organic fertilizer twice per year. Removal of spent flowers will also encourage further flowering. However other than that little or no maintenance is required,
Online Plants has an excellent range of the new release Mountain Beauty range of Helleborus.