Answer: Yes, without much difficulty. Undoubtedly you could get bearing wood from old trees and graft on young trees, or graft on other species. They may be grafted back and forth like the ornamental firs and spruces of the nurserymen.
Question: They don't compass, do they. If you cut them off, do shoots come out of the stumps?
Answer: Not as a rule. Adventitious buds belong to few pine trees. They graft conifers when the stocks are young.
Question: Of those that you suggest, what would be the best here?
Answer: The Korean, the Bungeana or lace-bark, the Swiss stone pine, and the Armandi. These can be counted on to bear in the vicinity of New York. Several other species not yet tried out may bear well here, but I have not gone over the trees on estates very extensively as yet with that question in mind.
Question: Are any of these specially good for the South?
Answer: Yes, most of the pine nuts that I have shown here will grow south of Maryland and seven of the best pine nuts in the world belong to our Southwest.
Question: Is there any more trouble with the cows and squirrels over nut pines than there is with ordinary pine trees?
Answer: No, excepting that you don't miss the ordinary kinds so much. It is largely a matter of comparative interest.