Milky Way Marlberry. Milky Way Ardisia appears to be something that originated out there somewhere in the Milky Way. It has incredible irregular white marginal variegation which looks like it would be very unstable, but I have never seen a single reversion, unless it is an occasional all white branch. It is good as a ground cover in the shade or as a pot plant in areas where it is too cold to grow outside. This is a wonderful plant to use as a Christmas ornament, since it is at its peak with its red berry crop during the holiday season.