Corn is a monocotyledonous plant. It has a 120 to 190-day life cycle, from sowing to harvesting, and it is monoecious, which means that its sexes are separated in the same plant..

At the top we can find the male inflorescence that forms the ears, and in the middle, the female inflorescence that forms the cobs. It is a cross-pollination plant (pollinated by the wind).

It stands 50 centimeters to 4 meters tall. The stem is two to ten centimeters thick. Its roots are fibroid with long strands that can go 20 to 50 centimeters deep into the soil.

It also has adventitious roots that grow from the stem's neck and help support the plant.