Alan,
You and The Fluffy Bunny are right about fire blight resistance and I do follow that school of thought 99.999% of the time. You have seen my posts such as this one Pear tree Fireblight research so you dont have to . So the practical side of me grows all FB resistant pears but I do have a tree here or there I graft three feet up on a mature wild callery that’s something like clapps favorite. I know FB will get it but I can change varities and two years later I will be producing on the same tree. That’s not an approach I would recommend but when done properly your only out a little time and the roots are FB resistant. I’ve learned the hard way branches are better than trees. If the main trunk is wild callery you never get the pear killed to the ground. At least I have not had one grafted that way killed yet. Formerly I grafted low with the idea I did not want that wild callery producing the trunk I wanted the scion trunk. We live and learn.
3 Likes