Sounds like a perfect candidate for various sized/shaped potted plants. Even small evergreens in those terra-cotta plastic square tubs look good. My wife has several along our north wall, along with some nice rectangular cedar boxes my son made for her. She has some small evergreen trees about 2 foot tall in some of those planter boxes. What's nice about them is that they're easily moved with a two-wheeled hand truck to revise per a future 'opinion'!
