Unique Features: Not recommended due to the Emerald Ash Borer.  Ash trees can be treated preventively either yearly when doing it yourself or every other year with professional treatments.  Disease mitigation on already infested trees is difficult.  If you are somewhat isolated, about a mile from any other possible plantings of Ash trees it is fairly safe to plant Ash trees since the Emerald Ash adults can only travel about ½ mile on their own.