Why are dwarf evergreen shrubs and trees so popular in landscape design? Well, besides the beauty of their foliage, they provide structure for a yard without overpowering it. To help define dwarf evergreen shrubs and trees, Marie Iannotti notes that they "either have a mature height of less than 12 feet or are so slow growing that the garden will probably be long gone before the evergreen out grows it." Learn more about dwarf evergreen shrubs and trees in this article from About's Gardening Guide.