I would like ideas for a vertical shrub or small tree to plant along the side of my house. The spot gets only a little direct sun; it's mostly shaded by the house. Right now we have two scraggly evergreens, vaguely Christmas-tree shaped of unknown type (maybe yew?) that don't look good.

Most shade tolerant shrubs seem not to be vertical. I'd be willing to try something looser in form that's still taller than it is wide (e.g. fothergilla), instead of risking a ratty arborvitae or the like.

Any ideas for me? Thanks!