Winter is a beautiful time of year for many. Snow blankets the world and sits in fluffy clouds on evergreen branches. Red twig dogwood glows in groups of fiery red and willow radiates with branches of bright yellow. Where it doesn’t snow, evergreen broadleaves keep things looking lush, when many other broadleaved plants have gone dormant. Hardier annuals like pansy and alyssum keep looking beautiful throughout the winter in areas where it doesn’t get too cold. All of these sights are expected year after year in the winter time, but the genus of plants known as Helleborus or Lenten Roses can...