The GP comment is overstating the genetic differences and pollination difficulties. Most apples are not self-fertile. Pairing pollinators together has more to d

The GP comment is overstating the genetic differences and pollination difficulties. Most apples are not self-fertile. Pairing pollinators together has more to do with bloom times; some trees bloom earlier/later than others and trees need to have flowers out simultaneously. Here's some more reading: https://www.cumminsnursery.com/learn-trees/fruit-tree-bloom-dates/ https://www.cumminsnursery.com/learn-trees/fruit-tree-bloom-... https://www.cumminsnursery.com/learn-trees/fruit-tree-pollination https://www.cumminsnursery.com/learn-trees/fruit-tree-pollin...