History of agriculture in Canada
In the 16th century Samuel de Champlain and Gabriel Sagard recorded that the Iroquois and Huron cultivated the soil for maize or "Indian corn". Maize (Zea mays), beans (phaseolus), squash (Cucurbita) and the sunflower (Helianthus annus) were grown throughout agricultural lands in North America by the 16th century.
Source: Wikipedia — History of agriculture in Canada (CC BY-SA 4.0)