We live in the city and are looking for an evergreen tree to give us some privacy from the house behind us. Most nice trees are deciduous as far as I can see. We would be looking at buying something which is fairly mature, so that we don't have to wait years for it to grow. Any ideas? I checked the key post on trees and didn't see any thing relating directly to evergreen trees - except those posters trying to get rid of the dreaded leylandii.