Kimigayo Marlberry. Kimigayo Ardisia is another cultivar of the ground cover species of Ardisias often referred to as Coralberry. It flowers with the typical soft pink flowers of the species followed by large red berries. This cultivar has a chartreuse irregular margin with entire or serrated margins. It is great from Zones 7b-10 as an outdoor shade ground cover which will reach 6 inches or so in height. But if you can't grow it outdoors, it makes an outstanding pot plant, especially with its brilliant red berries at Christmas and through most of the winter.