here is the problem, those trees, that were planted about 8 years ago have become overgrown and now over hang onto my property (well, I think the airspace is my property, but I am not sure....DO I OWN THE AIR SPACE ?) and I would like to plant a flower and vegetable garden there, as the rest of my property is already landscaped with lawn, flowers, etc., but this free area that I have is almost 100% sh