Here's a picture of the entrance, from the opposite side of the garage door.

If you're wondering what those diagonally striped boxes are, they're supposed to be trimmed hedges. I couldn't figure out how to make them so I used the basic box with a texture on it to try and simulate a "box hedge". I don't think it turned out quite the way I want.
Does anybody have any suggestions as to how to have more realistic looking hedges?