So, we've been doing a lot of house shopping (dreaming really, at this point) and my wife keeps seeing pictures like this:

... with nothing between you and the neighbor but a close-cropped lawn. She is very concerned about privacy and proximity to neighbors. I assume that almost every bit of that lawn is easement, but I also assume that you can put hedges, bushes and trees in that easement, right? These folks just chose not to, right? Looking at that blank wall isn't much different to me than a privacy fence, but apparently it makes her skin crawl! The word "penitentiary" was even used. So, what are the restrictions regarding landscaping? I know fences are out, as are hard scape elements in the setbacks or easements. Thanks in advance.