Yes many people, maybe even most use callery as rootstock or ohxf in this area . @Derby42 , @tonyOmahaz5, @Olpea etc. Can also give advice using these as rootstock. The callery or bet is by far the best rootstock on my property in Kansas. In nearby states of Missouri , oklahoma, and Nebraska the callery is one of the best rootstocks. This thread and others i posted explain the wild callery response to grafting very well Wild callery pear rootstocks. We have top worked hundreds of the large wild callery.
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