How long doMushroomslast in the fridge?
The USDA rates 2 kinds of this separately
The USDA files 2 separate entries under this name — USDA record 292 and dried — and they do not keep for the same time: Mushrooms holds 3 days to 7 days outside the freezer, Mushrooms, dried holds 1 year to 2 years.
Freezing changes the unit, not just the number
Here the freezer does not so much extend the answer as replace it. 7 days in the sealed fridge becomes 12 months in the freezer: 51 times longer, and days turning into months. The refrigerator from the day of purchase figure alone spans 3 days to 7 days, a factor of 2.3.
Every storage figure the USDA publishes for this item
All three places the USDA recognizes are rated here — pantry, refrigerator and freezer — which only 65 of the 466 foods in the data manage. The source also indexes it as dried.
Mushrooms
- In the freezer10 months to 12 months
- Unopened · in the fridge3 days to 7 days
Mushrooms, dried
- Unopened · in the pantry1 year to 2 years
- Once opened · in the pantry3 months
Turning the range into a date
Each kind gets its own dated rows here, 4 rows across the 2 the USDA lists under this name, because a date is only worth printing against the window it belongs to.
Mushrooms
- In the freezerUse by10 months to 12 months after the day you bought it
- Unopened · in the fridgeUse by3 days to 7 days after the day you bought it
Mushrooms, dried
- Unopened · in the pantryUse by1 year to 2 years after the day you bought it
- Once opened · in the pantryUse by3 months after the day you opened it
Is this window about safety or about taste?
The answer at the top of this page reads 3 days to 7 days in the fridge. What decides that is the food and not the shelf the source files it on: Mushrooms is raw and whole. Past it, judge it by look and smell: this window rates how good the food will be, not the day it becomes a hazard.
Held at 0 °F food stays safe for as long as it stays frozen, which is why a freezer figure counts as quality on this site whatever the food is. Every figure assumes the food was sound when you stored it, that your refrigerator holds 40 °F or below and your freezer 0 °F or below, and that the package was handled normally.
It is past the date. Now what?
Say the calculator above puts Mushrooms past its 3 days to 7 days in the fridge window. Past that the calendar stops deciding and the food itself does. Mold, a slimy or sticky surface, soft or darkened spots, or a sour smell mean it goes out whatever the date says.
The FoodKeeper entry this page is built from prints storage times and nothing else, so anything past them here is USDA and FSIS guidance rather than a figure from the source. The whole rule, including the cases the source does not cover, is set out under what to do when the date has passed.
Is that a long time?
15 items in the Produce list keep exactly as long as Mushrooms, 7 days, so they all share place 49 of 89 rather than being put in an order the data does not support. Among the 340 foods the USDA also gives a refrigerator figure, it keeps longer than 39% of them.
Items that behave the same way
All 6 of the 6 items nearest Mushrooms keep exactly as long as it does, 7 days, so the ranking around it is a tie rather than an order.
Products the USDA rates in the same places
Only 1 other product in the whole file carries the same set of rated places as this one, freezer from the day of purchase, pantry from the day of purchase, pantry after opening and refrigerator from the day of purchase: Herbs. That is 1 product out of 466, which makes this a rare shape of record rather than a common one, and it is worth knowing that the comparison below is drawn from a very small group. Of the 1 shown, 1 keeps longer than this one.
- Herbs7 days sealed in the fridge
Closest by shape, but not an exact match — they share most of these places, not all of them.
- Eggplant4 days sealed in the fridge
- Yuca/cassava7 days sealed in the pantry
- Okra2 days sealed in the fridge
- Beets1 week sealed in the fridge
- Ginger root2 weeks sealed in the fridge
- Rutabagas2 weeks sealed in the fridge
- Onions2 months sealed in the fridgeyellow, white, red, etc.
The rest of the Fresh Vegetables shelf
The USDA puts this product on the Fresh Vegetables shelf together with 58 others, and 34 of them keep longer outside the freezer. The shelf runs from Kimchi at 12 months down to Corn on the cob at 2 days. Nearest this product by window are Eggplant, Rhubarb and Taro, which is the order the list below is printed in. The order counts the longest window outside the freezer, so Mushrooms sits here at 7 days rather than at the 3 days sealed in the fridge its own answer prints.
- Eggplant7 days4 days sealed in the fridge
- Rhubarb7 days3 days sealed in the fridge
- Taro7 days7 days sealed in the pantry
- Yuca/cassava7 days7 days sealed in the pantry
- Kohlrabi1 week1 week sealed in the fridge
- Zucchini1 week1 week in the fridge
- Hot peppers1 week1 week sealed in the fridge
- Edamame1 week1 week in the fridge once thawed
If it has to keep longer than this
If it has to keep longer than 7 days, the Produce aisle gives 44 products that hold at least twice as long outside the freezer. The smallest step up is Blueberries at 2 weeks against this one's 7 days; after it come Melons, Artichokes and Bamboo shoots. They are printed below in the order the step gets bigger, not alphabetically. In the other direction, 8 entries in the category keep half as long or less, Bananas and Bok choy among them. The largest step the category offers is Coconut at 1 year.
- Blueberries2 weeks1 week sealed in the fridge
- Melons2 weeks2 days in the fridge once opened
- Artichokes2 weeks1 week sealed in the fridge
- Bamboo shoots2 weeks5 days in the fridge once opened
- Beets2 weeks1 week sealed in the fridge
- Cabbage2 weeks1 week sealed in the fridge
- Celery2 weeks1 week sealed in the fridge
- Leeks2 weeks1 week sealed in the fridge
The record this page is built from
The USDA publishes 2 separate rows under this name — records 292 and 385 — and this page carries all of them rather than picking one, because their windows differ. Between them they fill 4 of the nine storage slots with a time. Comparisons and the place in the category are computed for Mushrooms, which is the kind the plain name means here, chosen kind by kind rather than by the order the source happens to list them in. The same record answers to dried in the source's own index.
Where these numbers come from
Every range on this page is published by the USDA FoodKeeper and reproduced unchanged. The multipliers, the rankings, the percentages and the dates are ours, computed from those ranges. Where the source gives a span such as 3 to 5 weeks, comparisons use the upper figure, and the full span is always printed.
Rankings cover only the items the USDA gives a usable figure for, and identical ranges share a place rather than being ordered arbitrarily. Neighbors are chosen by nearest storage time within the same category, never alphabetically: two foods filed next to each other by name usually have nothing to do with each other. The freezer is excluded from ranking because it flattens almost everything.
Where the USDA lists several kinds under one name, they share one page here and every kind keeps its own windows: the source prints them as separate rows, and a page that merged them would be inventing a figure the source never published. Comparisons and the place in the category are computed for the kind the plain name means — the shell egg for eggs, the can for tuna — which is settled name by name rather than by the order the source lists its rows in, and the page names it. Where the plain name means no single kind, the page prints no single figure at all and lists the kinds instead.
Source: USDA FoodKeeper, retrieved 1 September 2026. This site computes every comparison on this page and takes responsibility for it. Found a figure that does not match the source? Tell us on the contact page, with the page and the row — the parsing is mechanical, so a mismatch is our bug and we want it. How the whole site is built, which figures are ours and where the source can be checked is on the method page.
USDA index terms: dried, Mushroom
KeepsUntil is an independent reference built on public USDA data. It is not affiliated with, endorsed by, or connected to the U.S. Department of Agriculture or the Food and Drug Administration. Whether a given window is a safety limit or a quality window is stated on the page that prints it.