Onions and potatoes are versatile staples in any kitchen, but they can go bad quickly if not stored properly. Here's a comprehensive guide on how to store onions and potatoes in your kitchen to keep them fresh and ready for use.
Understanding Onion and Potato Storage Needs
Before we dive into the storage methods, it's essential to understand the unique storage needs of onions and potatoes. Both are root vegetables and should be stored in cool, dark, and dry places. However, onions prefer slightly warmer temperatures, while potatoes thrive in cooler environments. Also, both should be kept away from direct sunlight and heat sources to prevent sprouting and spoilage.
Storing Onions
Onions are relatively easy to store and can last for several weeks with the right conditions.

At Room Temperature
For short-term storage, you can keep onions in a cool, dark, and dry place in your kitchen, such as a pantry or a cabinet. Make sure they are in a single layer and not overcrowded to allow for proper air circulation. The ideal temperature for storing onions at room temperature is between 40°F to 50°F (4°C to 10°C).
In the Refrigerator
If you want to extend the shelf life of your onions, you can store them in the refrigerator. The cold temperature slows down the ripening process. However, keep in mind that storing onions in the refrigerator can cause them to become soft and their flavor may be slightly altered. It's best to store them in the crisper drawer, away from fruits that release ethylene gas, which can cause onions to spoil faster.
In the Freezer
For long-term storage, you can freeze onions. This method is particularly useful if you have a surplus of onions that you want to preserve. To freeze onions, first, peel and chop them, then spread them out on a baking sheet lined with parchment paper. Place the baking sheet in the freezer until the onions are frozen solid. Once frozen, transfer the onions to an airtight container or freezer bag. Frozen onions can be used in cooked dishes but are not suitable for raw use.

Storing Potatoes
Potatoes are more sensitive to storage conditions than onions and require a bit more care.
In a Dark, Cool Place
The ideal storage temperature for potatoes is between 35°F to 40°F (1.7°C to 4.4°C). A root cellar or an unheated basement would be perfect for this. If you don't have access to such a place, you can store potatoes in a dark cabinet or pantry in your kitchen. Make sure the area is well-ventilated to prevent moisture buildup, which can cause potatoes to spoil.
In the Refrigerator
While you can store potatoes in the refrigerator, it's not the best option. The cold temperature can convert the starch in potatoes into sugar, which can alter their texture and flavor. However, if you must store potatoes in the refrigerator, keep them in the crisper drawer and use them within a few weeks.
Avoid Storing Together
Never store onions and potatoes together. Both vegetables release ethylene gas, which can cause each other to spoil faster. Also, avoid storing potatoes with apples, as apples release a different type of ethylene gas that can cause potatoes to sprout and spoil.
Monitoring and Rotating Your Stash
Regardless of the storage method you choose, it's essential to monitor your onions and potatoes regularly. Check for signs of spoilage, such as soft spots, mold, or sprouts, and discard any affected produce immediately. Also, remember to rotate your stash, using the oldest produce first to prevent waste.
Storing Onions and Potatoes in a Pantry
If you have a pantry with the right conditions, it can be an excellent place to store onions and potatoes. Here's a simple way to organize your pantry for optimal storage:
| Zone | Temperature | Humidity | Storage |
|---|---|---|---|
| Top Shelf | 60°F to 70°F (15°C to 21°C) | 40% to 50% | Onions |
| Middle Shelf | 50°F to 60°F (10°C to 15°C) | 70% to 80% | Potatoes |
| Bottom Shelf | 40°F to 50°F (4°C to 10°C) | 60% to 70% | Garlic, shallots |
This setup ensures that each vegetable is stored in the optimal temperature and humidity range for its needs.
Storing onions and potatoes properly can significantly extend their shelf life, saving you money and reducing food waste. With the right conditions and a bit of care, you can keep these versatile vegetables fresh and ready for use in your kitchen.
More Details
Aug 23, 2025 ... To store potatoes and onions in a kitchen cabinet, it's best to keep them separate and in a cool, dry, dark place with good ventilation. •.

Dec 6, 2024 ... Potatoes, onions, and garlic are items that all should be stored in the pantry. It is important to keep potations and onions at least 6 feet ...

Jul 30, 2023 ... I store both out, potatoes on the floor, onions on the counter. The fridge would be fine for both as well, but again, keep them separate.

Aug 7, 2023 ... Onions and potatoes store best in a similar environment: a cool, dry place. And both like to have a ventilated container, like a paper bag, basket or open bin.

Mar 27, 2026 ... Potatoes and sweet potatoes. Keep them away from your onions. They don't like to be stored together. They can actually trigger sprouting and ...

Oct 17, 2016 ... My mom grew up on a farm and she told me potatoes should be stored alone in an open, non-plastic bag, kept in a dark, cool place. Same with ...

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Apr 5, 2014 ... Kept in the dark: Davison says your potatoes should be stored inside a paper bag in a cool, dark, dry place. And as mentioned above, away from ...

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Feb 20, 2024 ... You can keep them in a paper bag or even a wire basket. We recommend these onion storage containers. It isn't necessary to store onions in the ...

Apr 20, 2013 ... I've successfully kept them in my 65-70ish degree kitchen drawer for up to 3 months. A cool, dark basement is a good choice, if you happen to ...

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Nov 24, 2024 ... whenever you're storing sweet potatoes, potatoes, onions, garlic, keep them in a cool, dark place, but keep them separate. they'll last longer.

Aug 9, 2021 ... It's also important not to store potatoes and onions together. Though they seem like two peas in a pod as they're often both called for in ...

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May 5, 2021 ... Here's the bottom-line in regard to storing any potato: Never, ever store raw potatoes in the refrigerator. The colder temperatures in the ...

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Jan 15, 2009 ... Potatoes and onions should not be stored close together because they produce gases that spoil both. Like; Save ...

Mar 9, 2026 ... Skip the fridge. The crisper drawer is ideal for storing many types of produce, but not most types of onions. “Don't store bulb onions in the ...
