It should take about 93 days, assuming average weather conditions.
It depends on what type of corn you want to grow...
It tales about 3-6 weeks to grow into a big corn plant.
Corn snakes can grow to six feet (1.83m) long
Corn syrup has sugars. Sugar can work as a fertilizer for plants. As long as you have not over fertilized, the plant will grow faster.
4-5 feet
Corn cannot grow in complete darkness as it requires sunlight for photosynthesis, which is essential for its growth. Without sunlight, the corn plant will not be able to produce the energy it needs to grow.
6 feet long
about a week or two.
Corn is very versatile and can grow in many different countries.
Here in Northern Ireland it took us about 3 - 4 months to grow it.
mexico 2,000 yrs ago
3-4 weeks