Journalist and scientific communicator Elio Cadelo overturns the idea that Italy is by its nature a sort of "Garden of Eden" with the widest biodiversity. Roman farmers acclimatized them, hybridized them and cultivated them, creating, for the first time, a variety of agricultural products unique in history.

The presence in the Roman world of plants of American origin such as corn, pineapple, pepper, pumpkin, sunflower and many others is amply proven by a large number of classical authors.