Rock Cress works well in those sunny corners of the garden where a splash of color will be appreciated in the spring, with a tight mound of soft grayish green foliage afterwards. Semi-evergreen in warmer winters, rock cress benefits from a light trim immediately after the blooms are spent to encourage a tight mounding form. 'Axcent Light Blue' flowers are intensely blue with a pale yellow eye, and attract bees, butterflies and hummingbirds.