Answer: Granny Smith is considered self-fertile so another apple tree is not necessary for your Granny Smith to bear fruit. However, it will bear more heavily if there's an apple tree in the area that blooms at the same time. If there are no other apple trees in your neighborhood, you might consider planting a Jonathan or Braeburn apple tree for a heavier yield.
Most Asian pears are self-fertile but another variety of Asian or European pear will increase the yield. Asian pears tend to bear heavily so you may not need another pear tree for a good yield. I'd wait to see how it does as it matures.
Best wishes with your fruit trees!
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