Best Method recommended method with best effort-to-efficacy tradeoff 2-4 weeks
Cool Dry Dark Place (Whole)
- Store whole sweet onions in a cool, dry, dark, well-ventilated place
- Do not refrigerate whole—moisture causes softening
- Keep away from light to prevent sprouting
- Keep away from potatoes and ethylene-sensitive produce
- Use within 2-4 weeks—sweet onions don't keep as long as storage onions
Cut/Prepared storage method for produce that has been cut open (shorter duration, different handling) 5-7 days
Cut Sweet Onion
- Wrap cut half in plastic wrap or store in sealed container
- Refrigerate
- Use within about a week
Protect your produce

This item produces ethylene gas, which can speed up ripening/spoilage of nearby produce.
Fridge Friend absorbs ethylene gas, bacteria, odours, and excess moisture to make your food stay fresh longer.
Revival Tips
Sprouted sweet onions can still be used; trim green shoots if desired. Soft or moldy spots should be cut away.
Fun Facts
- Vidalia onions are sweet onions from Georgia; their low sulfur content makes them mild—store in a cool, dry place.