Most corn plants yield one to two ears of corn, depending on the cultivar. Corn is an annual plant, so once the ears have been harvested, it will not produce more corn.
Early Varieties of Sweet Corn
Early-maturing sweet corn varieties start producing within 60 to 80 days after planting. These plants will produce only one ear of corn per plant. The quality of the ear will depend on various conditions, including temperature during pollination and water availability during growth.
Later Maturing Sweet Corn
Later-maturing varieties of sweet corn will produce two ears, with the second ear being of inferior size and quality to the first. Mid-season and late-season varieties of sweet corn mature within 79 to 95 days after planting.
Field Corn Varieties
Field corn, which is produced for such items as corn oil and silage, produces one to two ears of corn per plant. Ear size is larger than that of sweet corn, but it is of poor quality. Some varieties of field corn can produce six to 10 small ears of corn per plant.