Moved into our house a year ago and since then the house next door was sold, demolished and a much larger house with a back balcony about 15' high is now overlooking our entire backyard. I am looking for fast growing solution to get some privacy - up 16' +. I have no trees along that side of the back yard so I am planning to do a combination of deciduous trees, evergreens and shrubs. I'll plant some evergreens that are columnar to grow in over time but in the meantime, I'm looking for something that will give me privacy for a few years. Any suggestions for the shorter term privacy? It is the south facing border.