Good morning. I'd like to add a bush or other plant under my daughter's windows to keep human intruders out. The windows are low, so I'm hoping to find something that grows to be 36" max (or can be easily pruned). The windows get direct afternoon sun. I was thinking about barberry, but I understand that they can have an unpleasant odor. Roses probably won't work because I am told that you have to trim them way back in the winter. I live in the MidAtlantic part of the U.S. Any suggestions?