Why Potatoes Don't Last Longer in the Refrigerator (And Where to Store Them Instead)

Potatoes last longer at room temperature than in the refrigerator

No—potatoes should not go in your refrigerator if you want them to last. Cold temperatures convert the starch in potatoes into sugar, which changes their flavor and texture, and the moisture in a fridge speeds up sprouting and decay. A cool, dark cupboard or pantry keeps potatoes fresh for weeks or even months. The refrigerator is actually one of the worst places you can store them.

This matters because potatoes are a staple that many households buy in bulk. Storing them correctly means you use what you buy instead of throwing away soft, sprouted, or moldy potatoes. It also means they taste better when you cook them.

Key Takeaways

• Potatoes stored in a cool, dark, well-ventilated cupboard or pantry last 2 to 3 months, while refrigerated potatoes begin to deteriorate within days.
• Cold temperatures turn potato starch into sugar, making them taste sweet and grainy when cooked, and the moisture in a fridge causes them to sprout faster.
• The ideal storage spot is between 45°F and 55°F, dark, and with air circulation—a basement corner, unheated garage, or root cellar works better than a kitchen cabinet above the stove.
• Keep potatoes away from onions, which release gases that speed up sprouting, and store them in a breathable container like a burlap sack or cardboard box, not a sealed plastic bag.
• If you have already refrigerated potatoes, use them within a few days; if they develop a green tint, cut away the green parts before cooking, as they contain solanine, a compound that can cause stomach upset.

Why cold temperatures damage potatoes

When potatoes sit in temperatures below 50°F, an enzyme in the potato begins breaking down starch and converting it to sugar. This process is called cold-induced sweetening. The result is a potato that tastes noticeably sweeter and has a grainy, mealy texture when you cook it—not the creamy or fluffy texture you expect from a baked or boiled potato. The flavor change is permanent even if you let the potato warm up later.

The refrigerator also has high humidity, which keeps the potato skin moist. Moisture triggers sprouting and allows mold and bacteria to take hold faster. A potato that would stay firm for weeks in a dry pantry can become soft and spotted in a fridge within days. If you have already put potatoes in the refrigerator, use them within 3 to 5 days.

The ideal storage temperature and location

Potatoes store best between 45°F and 55°F—cooler than a warm kitchen but warmer than a refrigerator. This temperature range slows sprouting and decay without triggering cold-induced sweetening. A basement corner, an unheated garage, a root cellar, or a cool pantry away from heat sources will work. If your kitchen is warm, avoid storing potatoes in a cabinet above the stove or near a sunny window.

The storage space should also be dark. Light exposure causes potatoes to turn green and produce solanine, a compound that can cause nausea or stomach upset if eaten in large amounts. A cardboard box or burlap sack in a dark corner is ideal. Avoid clear plastic bags or containers where light can reach the potatoes.

Air circulation matters too. Potatoes release moisture as they age, and stagnant air traps that moisture around them, encouraging rot. A container with holes or a loosely closed bag allows air to move. Never seal potatoes in an airtight plastic bag or container.

Choosing the right storage container

A burlap sack or paper bag with holes punched in it is the best choice for potatoes. Both allow air to circulate while blocking light. A cardboard box works well too, especially if you line it with newspaper to block light while still allowing some air movement. Some people use a wire basket or mesh bag, which offers excellent ventilation.

Avoid plastic bags, especially sealed ones. Plastic traps moisture and prevents air flow, creating the exact conditions that cause rot and sprouting. If you have only plastic bags available, poke several holes in the sides and leave the top open. Do not store potatoes in the crisper drawer of your refrigerator, even if you think the temperature is warmer there—it is still too cold and too humid.

Keeping potatoes away from onions and ethylene-producing foods

Store potatoes away from onions. Both vegetables release gases as they age, and when stored together, these gases speed up sprouting in the potatoes. Keep them in separate containers or at opposite ends of your storage space. The same goes for apples, avocados, and bananas, which release ethylene gas—a plant hormone that triggers ripening and sprouting in nearby produce.

If your storage space is small, use a cardboard divider or shelf to separate potatoes from these other items. Even a few feet of distance helps. The goal is to keep the gases from concentrating around the potatoes.

What to do if potatoes have already been refrigerated

If you have already stored potatoes in the refrigerator, they will not return to normal once they warm up. The starch-to-sugar conversion is permanent. However, you can still use them—they are safe to eat, just sweeter and less ideal for mashing or baking. Use them within 3 to 5 days, and consider using them in dishes where a slightly sweet potato works, like roasted potatoes with herbs or potato soup.

If your refrigerated potatoes have developed a green tint or soft spots, cut away the green parts before cooking. The green indicates solanine buildup, which can cause digestive upset. Soft spots mean decay has begun, so trim those away too. If the potato is mostly soft or has a strong smell, discard it.

How long potatoes last in proper storage

In ideal conditions—a cool, dark, well-ventilated space between 45°F and 55°F—most potato varieties last 2 to 3 months. Waxy potatoes like red or fingerling varieties tend to last slightly longer than starchy varieties like russets. Smaller potatoes also last longer than large ones because they have less surface area exposed to air and moisture loss.

Check your stored potatoes every few weeks. Remove any that have sprouted, turned soft, or developed mold. A few bad potatoes can release gases that speed decay in the rest of the batch. If you notice sprouting beginning, use those potatoes first. Sprouted potatoes are still safe to eat if you remove the sprouts, but they are losing nutrients and flavor.

Frequently Asked Questions

Can I refrigerate potatoes for just a few days?

You can, but it is not ideal. Even a few days in the cold will begin the starch-to-sugar conversion. If you must refrigerate them, use them within 3 to 5 days and expect a slight change in texture and sweetness. A cool pantry is always the better choice if you have one available.

What if my potatoes start to sprout?

Sprouted potatoes are safe to eat if you remove the sprouts and any green areas. Cut away the sprouts and the tissue around them with a knife. Use sprouted potatoes soon, as they are losing starch and nutrients. If sprouting is widespread or the potato is soft, discard it.

Do sweet potatoes store the same way as regular potatoes?

No. Sweet potatoes prefer warmer temperatures—around 55°F to 60°F—and should never go in the refrigerator. Store them in a cool, dark place like a pantry or basement, but keep them warmer than you would regular potatoes. They last about 3 to 4 weeks in proper storage.

Why do my potatoes smell bad even though they look okay?

A strong smell means bacteria or mold is growing inside, even if the outside looks fine. Discard the potato. Smell is a reliable sign of decay, so trust your nose. This often happens when potatoes are stored in a damp or poorly ventilated space.

Can I store potatoes in the freezer?

Raw potatoes do not freeze well—they become mushy and watery when thawed. However, you can freeze cooked potatoes like mashed potatoes, baked potatoes, or french fries. If you have excess potatoes you cannot use in time, cook them first, then freeze them in portions.