produce
How Long Does Onion Last?
Onion lasts 2–3 months in the fridge (cut, tightly wrapped or in container). Store whole onions in a cool, dark, dry place with good airflow — a mesh bag or open bowl works better than a sealed container that traps moisture.
Fridge
2–3 months
cut, tightly wrapped or in container
Counter
2–3 months
whole, cool dark dry place
Freezer
6–8 months
chopped; best for cooking
Pantry
2–3 months
cool, dark, ventilated
Storage Tips
- Store whole onions in a cool, dark, dry place with good airflow — a mesh bag or open bowl works better than a sealed container that traps moisture.
- Never store whole onions in the fridge; the humidity causes them to turn soft and moldy faster than pantry storage.
- Keep onions away from potatoes — both release gases that cause each other to sprout and spoil faster.
How to Tell If Onion Has Gone Bad
Signs to look for
- Soft, mushy spots or wet patches on the outer layers with a strong unpleasant smell.
- Visible mold (white, black, or green) on the skin or between layers.
- Sprouting green shoots — edible but indicates the onion is past peak; use promptly.
Frequently Asked Questions
Should you refrigerate onions?
Whole onions: no. The refrigerator's humidity accelerates spoilage. Cut onions: yes — wrap cut surfaces tightly in plastic or store in an airtight container for 1–2 weeks. Peeled onions should also be refrigerated.
Why should onions not be stored near potatoes?
Onions emit ethylene and moisture; potatoes are sensitive to both. The ethylene accelerates potato sprouting, and the shared humidity promotes mold in both. Store in separate cool, dark locations.
Can you freeze onions?
Yes — chop to your preferred size, spread on a tray and freeze for 1 hour, then bag. No blanching needed. Frozen onions go straight into soups, stews, and stir-fries from frozen. Texture will be soft, so not suitable for salads.
Related Ingredients
Stop wasting food
Track your onion automatically
Shelfie scans your groceries, tracks expiry dates, and reminds you before your onion goes bad. The average family wastes $2,913/year in food (USDA ERS).
Get Shelfie Free