A Mediterranean patio almost calls for a potted dwarf citrus or two. Not only are they evergreen, but you can pretty much count on fruit or blossoms (or both) throughout the year. Though the overall diameter at the top of these urns may be slightly less than optimal, the shape and height give them plenty of space for roots. Lemon and citrus are the usual choices, but why not consider a lime (handy access for a mojito) or a kumquat?