Begonias with light-pink blooms and chartreuse foliage, set alongside ivy, buff-colored coleus, white-and-green-striped Dianella, and white flowering helleborus, are well suited for a slate-gray fiberglass window box. Iron railings are needed to support this box, but it also works well as a stand-alone piece on the patio. "It's a classic look with a nice flower and foliage mix that gives you something to look at the whole season," says James Hohmann, general manager of Mahoney's Garden Centers in Brighton.