Believe they are good for Ag Area 4 (that's what I am) are you 3 or 4? The American Chestnut was native in Maine and the area we checked out in Chateaugay NY? There are surviving American Chestnut trees in Maine. Not sure if the Dustan is suited for the same areas as the native American Chestnut.Hey Ed, will these trees survive up here. If so I will call the company tomorrow and see if they will send some to the Walmart stores in this area.