Fridge storage
How long does spring mix last in the fridge?
About 3 days for spring mix. That’s what Well Stockd plans on; the table below has the sources’ own times.
Times are for a fridge at 40°F (4°C) or below. They’re a guide, not a safety guarantee.
How we checked this: the storage times here come from USDA FoodKeeper and USDA FSIS, plus any other source named on the page, and each one is checked against its source before the page goes live. Editorial policy
How long it keeps
- Unopened
- Up to the printed date, typically 4 to 5 days once the clamshell is in the fridge Source: USDA FoodKeeper: Bagged greens (opens in a new tab)
- Opened or cut
- About 2 days once opened; the most delicate leaves go first Source: USDA FoodKeeper: Bagged greens (opens in a new tab)
- Freezer
- Not recommended: freezing damages the texture beyond use.
- How to store it
- Add a dry paper towel to the clamshell to absorb condensation and turn the box over after a day. Do not wash until serving. Nothing revives spring mix once it has slimed; eat the wilting leaves in soup or a smoothie the day before that.

How to tell if spring mix has gone bad
Dates are estimates; these are the checks that actually decide it. Don’t taste food to check whether it has gone bad.
Throw it out at once if you see:
- Slimy or wet leaves
- Sour smell when the lid comes off
Warning signs (throw it out if you notice more than one):
- Brown, darkened edges
- Liquid pooling in the container
Sources and limits
Write the date it went in on the container, and use it within 3 days. If the package has a date, go by whichever comes first. Don't wait for a weekly check.
Well Stockd doesn’t know when this food was harvested, packed, bought, opened or cooked. Write down the date you opened, cooked or refrigerated it, follow the package directions, keep your fridge at 40°F or below, and check the official listing when food safety is in question.
The times in the table come from USDA FoodKeeper, USDA FSIS guidance on refrigerated storage, and any source named beside a row. The number at the top is Well Stockd’s own estimate. It’s a guide, not a safety guarantee: FoodKeeper says storage times are guidelines, and quality varies with how food is grown, handled, shipped and stored. This page was last updated .