Because sweet corn loses its sweetness much faster stored at room temperature compared to storing in the refrigerator, it is best to refrigerate it as soon as possible after it has been picked. The husks should not be removed until just before preparing. The sooner you eat it after it has been picked the sweeter it will be. If the corn has been husked, place it in a plastic bag and store in the refrigerator. Corn cut off the cob can be frozen using one of several different
Frozen Sweet Corn recipes. It can be stored frozen for 6 months to a year. Frozen corn is a great way to enjoy sweet corn all year round.
If harvesting your own sweet corn, it is best to pick it early in the morning and eat it as soon as possible. If not cooking it soon after it is picked, store as indicated above. Buying sweet corn from a road side stand may result in corn that has lost much of its sweetness from being exposed to high temperatures. The high temperatures will rapidly convert the corn's sugar to starch, causing it to lose some of its sweetness. So if buying from a road side stand, it is best to purchase it soon after the stand opens.