If you have a garden that’s overlooked by other properties, or you want to create boundaries to section off different uses in your yard, then landscaping borders are just what you need. Creating beautiful borders for your flowerbeds and paths gives your yard a unique and natural look. Additionally, landscaping borders can last forever and only become more beautiful with the passage of time so they represent an excellent investment. Trees are a natural boundary, but the downside is that they take time to mature. Unless you can afford to buy mature trees that are several years old and are tall with many leaves (or evergreens), you are going to have to wait some time before your ideal privacy limit is reached. If you only need one tree, then buying an older tree isn’t going to be to expensive, but if you are using trees for your property outer perimeter landscaping borders, then things start to get very expensive.
If you do create outer perimeter landscaping border whether using higher trees, or fences you need first to check if there are any local laws that control how high these can be. Often there is a maximum height for any given area and you must keep your fences under this. There could be a separate law that pertains to each tree, but if not, you will need to make sure that you cut your trees across the top just before they reach the legal maximum height – this will stop them growing upwards, but allow them to bush outwards instead.