How long do Sweet potatoes last in the pantry?

Turning the range into a date

Sweet potatoes keep 2–3 weeks in the pantry from purchase. One row, one deadline: 3 weeks in the pantry from the day of purchase, counted from the day it went in rather than the day it was made.

• From purchase · in the pantryUse by2 weeks to 3 weeks after the day you bought it

The methods the USDA actually rates for this item

The USDA rates only 1 of its nine storage methods for this item, and the pantry from the day of purchase is what it rates. The other 8 slots are blank, and a blank is not a zero: it means no published figure, not that the method fails. On the same shelf it sits 14 of 89, between Kumquats at 3 weeks and Pitaya/dragon fruit at 3 weeks.

Every storage figure the USDA publishes for this item

The USDA rates this item in the pantry and nowhere else, one of 84 foods of the 466 it files that way. Within Produce it is filed under Fresh Vegetables.

• From purchase · in the pantry2 weeks to 3 weeks

Can you freeze sweet potatoes?

The USDA prints no freezer time for sweet potatoes. Frozen at 0 °F any food stays safe; whether they are still good after thawing is a matter of quality. Keep the fridge at 40 °F or below and the freezer at 0 °F.

How to tell if sweet potatoes have gone bad

Go by the date first: sweet potatoes keep 2–3 weeks in the pantry. Mold, slime, a sour smell or soft dark spots mean it goes out; firm produce can be saved by cutting 1 inch around a small moldy spot, soft produce cannot.

Sources: USDA FSIS: the danger zone USDA FSIS: freezing and food safety USDA FSIS: molds on food FDA: are you storing food safely FoodSafety.gov: the FoodKeeper app.

Is it still safe to eat, or just past its best?

The answer at the top of this page reads 2 weeks to 3 weeks in the pantry. The USDA rating this place at all is the USDA saying Yams/sweet potatoes keeps there, so the figure rates how good it will be. Past it, whether it has gone bad is yours to judge by look and smell: this window rates quality, not the day it turns hazardous.

It is past the date. Now what?

Say the calculator above puts Yams/sweet potatoes past its 2 weeks to 3 weeks in the pantry 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 whole rule, including the cases the source does not cover, is set out under what to do when the date has passed.

Items that behave the same way

All 6 of the 6 items nearest this item keep exactly as long as it does, 3 weeks, so the ranking around it is a tie rather than an order.

• Citrus fruit, lemon, lime, orange, grapefruit, tangerines, clementineskeeps exactly as long
• Coconuts, freshkeeps exactly as long
• Carrots, parsnipskeeps exactly as long
• Ginger rootkeeps exactly as long
• Rutabagaskeeps exactly as long
• Kumquatskeeps exactly as long

Where these numbers come from

Every storage time on this page is the USDA’s own published figure from the FoodKeeper data, one of the 9 it keeps per food, reproduced unchanged and never an estimate of ours. Where the USDA lists several kinds under one name, each kind keeps its own windows, and the page names the kind its answer is for. The dates and multipliers are ours, computed from those ranges.

Source: USDA FoodKeeper, retrieved 1 September 2026. Found a figure that does not match the source? Tell us on the contact page. How the site is built is on the method page.

USDA index terms: potato, potatoes, sweet potatoes, yam, Yams

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.