The land was in Broome county so perhaps similar. My father tried fertilizing some of them once with some commercial 10-10-10 NPK that he had laying around and

The land was in Broome county so perhaps similar. My father tried fertilizing some of them once with some commercial 10-10-10 NPK that he had laying around and while I think it did help them grow pretty big they also stopped giving much fruit for the next few years. I think they're best just left to themselves.