Produce
Fresh (on the cob)

CornShelf Life, Storage, and Spoilage Guide

Sourced from
USDA FoodSafety.govFDA

Pantry

Not Recommended

Not recommended

Fresh corn should be refrigerated to maintain quality and slow the conversion of sugar to starch. Pantry storage will rapidly degrade quality.

Refrigerator

1-2 days

Store unhusked corn on the cob in a plastic bag in the crisper drawer of the refrigerator. For best quality, use as soon as possible after purchase.

Freezer

8-12 months

For best quality, husk, remove silk, and blanch whole cobs or kernels before freezing. Pack in airtight freezer bags or containers, removing as much air as possible.

Signs of Spoilage

  • Slimy or mushy texture on kernels
  • Sour or off-odor
  • Visible mold growth
  • Discoloration (dark spots or dullness)
  • Dry or shriveled kernels (for fresh corn)

Room Temperature Safety

2-hour rule (1 hour if ambient temperature is above 90°F/32°C)

40°F–140°F (4°C–60°C)

Perishable foods, including cooked corn, should not be left at room temperature for more than 2 hours. If the ambient temperature is above 90°F (32°C), food should not be left out for more than 1 hour. Discard any food left out longer than these times.

Expert Tips

Safe Handling

1

Wash hands thoroughly with soap and water before and after handling fresh produce.

2

Wash fresh corn under running water before husking or cutting.

3

Avoid cross-contamination by keeping fresh corn separate from raw meats, poultry, and seafood.

4

Refrigerate cooked corn promptly within 2 hours after cooking.

5

Cooked corn should be reheated to an internal temperature of 165°F (74°C).

Related Items

Comparisons

Cooked Corn (kernels or on the cob)Store in an airtight container.
Fridge
3-4 days
Freezer
2-3 months
Canned Corn (unopened)
Pantry
1 year (best quality), safe indefinitely if stored properly
Canned Corn (opened)Transfer to a clean, airtight container.
Fridge
3-4 days
Frozen Corn (unopened package)
Freezer
8-12 months (for best quality), safe indefinitely