I have one tree I began growing for a pollinator. This past season was the first year it blossomed and it was of no use as a pollinator. The cold spring weather had no effect on it and it was the first to blossom. It set very small crabs no bigger than the end of my little finger and I wonder what it’s pollinator was. The hard frost I had on 27 Aug. sent it into dormancy and by the 3rd week of September there were no leaves left on it. With all the controversy about ‘Baccata’ this may be something to take into account should you consider it as a rootstock.