Rock Cress is an extremely popular rock garden plant, and a familiar sight in the spring garden. It forms a low cushion of evergreen leaves, literally smothered by flowers for several weeks. This strain has flowers in various shades of purple to violet, over grey-green leaves. Plants should be trimmed lightly immediately after blooming, to encourage a thick mounding habit. Excellent choice for a rock garden in sun or part shade, growing over rock walls, or in alpine troughs and other containers.