Rock Cress, along with Arabis and Aurinia are extremely popular rock garden plants, and a familiar sight in the spring garden. They form a low cushion of evergreen leaves, literally smothered by flowers for several weeks. This strain has flowers in various shades of blue and violet-blue, 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.