I am trying to grow apples near Huntsville, Ont., which is Zone 4. Unfortunately, the local deer get many of them but not all. I have all Norland apples, which are very winter hardy but I understand Wolf River is, too, and produces bigger fruit. I have called and written to countless nurseries in Toronto as well in the Muskokas but no one could help me track down a Canadian source for a Wolf River sapling.