Potato (Andean) Early Spread

Timeline

1. c. 1400–1535Cuzco and the Lake Titicaca region · PeruThe Inca state managed potato production through terracing, fallowing, and chuño freeze-drying technology, developing hundreds of local varieties adapted to different microclimates; tubers served as military rations, tribute, and ceremonial food, sustaining highland populations and the imperial administrative network.
2. c. 1542–1550Spain and Italy · IberiaAfter the conquest, the Spanish brought Andean tubers back to the peninsula; in the 1540s they were trial-planted in Andalusia and the Canary Islands and in some Italian monastery gardens. At the time they were mostly regarded as curiosities or medicinal plants, and herbals and travel accounts began recording their morphology, laying groundwork for their adoption as a European staple after the 1570s.
3. c. 1545–1600Colonial Peru and Chile · PeruColonial authorities continued to rely on potatoes as rations within silver-mining and plantation labor systems, adjusting varieties and cultivation to supply cities and ports; Andean varieties also spread by ship to the Caribbean and African coasts, forming an early transoceanic biological exchange network.