Visual China Group via Getty Images In Roald Dahl’s novel James and the Giant Peach, magic crystals cause a withered peach tree to produce a spectacular, juicy, house-sized peach. How nice would it be, people thought, if we could grow massive fruit in real life – perhaps without also spawning giant insect pests and having to endure villainous aunties. By the mid-2030s, botanists had figured out how. Scientists found ways to produce oversized fruits and vegetables using genetics, and improved on James’s peach: they created crops and trees that grew not just a single species, but a variety of delicious and nutritious foods.   The Fruit Salad Tree, a tree producing multiple kinds of fruit which itself sounds like something from a Roald Dahl story, was produced commercially in the early 2020s. Grafting had been used for thousands of years to produce hybrid plants, and fruit salad trees are made by grafting branches of one tree, say a russet apple, to that of another variety of apple, say a golden delicious. Other varieties can be …