What food will gardeners be growing in future?

Red and yellow roots of oca tubers (Alamy/PA)
Can you imagine growing peach trees in a traditional orchard, or exotic root veg as a substitute for potatoes, or weird and wonderful salad leaves in summer when our regular lettuces have bolted?
It’s something Kew kitchen gardener and botanical horticulturist Helena Dove has been considering during her involvement with Food Forever, a new summer programme at Kew Gardens in London (kew.org) exploring the future of food.