 For example, branches can't be within a certain distance of power lines, and utility companies are required to cut them back. Well, if they have to come every two or three years to cut that down, you're into a situation where eventually you're not going to be able to maintain it. Or if there is quite a bit of droppage of debris from the tree onto the patio or into the gutters, again, you have to really make that decision. But those are some of the things to consider. What is the maintenance and how much is required to keep the tree alive and functioning in the landscape?