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How Long Do Walnuts Last? Do Walnuts Go Bad?

Among most of the nuts present out there, walnuts are the most beneficial.

They are round-shaped stone nuts with wrinkles over them.

These nuts are eaten in raw form to attain optimum benefits.

Walnuts are highly rich in vitamins and minerals, which is why they are eaten to prevent several types of diseases.

Besides that, they are also consumed by people to gain the right amount of nutrition quite often.

These nuts are suggested by doctors to be added to your daily diet.

Now you may wonder do walnuts go bad after a period.

It is correct that these nuts do go bad after a particular period of time.

Thus, you must be sure to include good walnuts in your eating habits.

Good walnuts act like magic in improving your health.

How Long Do Walnuts Last? Do Walnuts Go Bad?

Walnuts do go bad if you keep your nuts at a warm temperature, then they will only last for a while.

Also, a long time of exposure to heat can have a harmful effect on walnuts, and they will go rancid.

Eating a small amount of bad nuts will not make you immediately sick.

But you can face some digestion-related problems.

Rotten walnut has a disgusting taste, so it is advisable not to consume them.

One can only face a severe issue with bad walnuts if they are allergic to them.

But you can save the walnuts by providing them with suitable storage.

Walnuts can be purchased in two forms that are shelled and unshelled nuts.

Unfortunately, the nuts only last for about 2-4 weeks in the kitchen.

You can make them last for 9- 12 months by putting them in the refrigerator.

However, if you are a seller who purchases in bulk, then try to store walnuts in the freezer as it will save them for 18- 24 months.

The shelf life of walnuts can be increased more than as mentioned earlier by storing them with shells.

However, shelled nuts can be a mess as you need to get rid of the outer covering every time you want to have walnuts.

They have promising health benefits like mood-boosting and weight loss.

However, if you offer them to kids, then make sure they are chewing them properly, as swallowing a whole nut can be a medical emergency.

How to Tell If Walnuts Have Gone Bad?

Nuts cannot make you healthy if you prolong their storage period.

Unshelled nuts will look okay with the outer shell, yet they will rot from the inside.

Selection of a good nut is vital, but how can you do so?

  • The smelling test: it can help a lot in finding the difference between bad and good walnut. Everyone knows the nutty smell that walnuts have. But this smell vanishes when the walnuts become bad. The smell becomes sour, and you will feel an odour of stale. .
  • The texture of the nut: the texture is an excellent indication of bad walnuts. Good walnuts always have a crunchy texture. Therefore you can bite the walnut a little to see if they are crunchy or not. Bad walnuts are soft in texture and can give a nauseating feel after tasting. .
  • Gaze the nut: Gaze the nut closely to find a bad nut. For example, if you have shelled nut, then you might see a thread-like net in the inner nut. Without shells, nuts will tend to shift their colour to a dark shade when it goes bad. So if your walnuts turn black from brown, they have gone bad. .

How to Store Walnuts?

For enhancing the time of walnut, neat and tidy packing is the key.

Storing walnuts with caution will for sure increase their life.

While bagging the nuts, wrapping them in multiple layering is a waste of time.

Adding more layers to the packaging will raise the temperature.

Higher temperature causes the drying of walnuts.

Either shelled or unshelled walnut should be kept in an air-tight container.

Choose a cool and dry area away from pests to store them.

The freezer remains the walnut protected from pests and maintains the needed temperature as well.

Picking out dried walnuts from other nuts can prevent other walnuts from drying out.

However, moisture is also an important factor that must not be in touch with your stored walnuts.

Moisture makes walnuts lose their essential oils earlier than usual.

Foods with a strong odour, like onions, should not be kept near your walnuts.

Strong odours will turn the walnut taste to decay and spoil them too soon.

How Long Do Walnuts Last? Do Walnuts Go Bad?

Andrew Gray
Want to know how long walnuts stay fresh and if they spoil? Discover the shelf life of walnuts and whether they can go bad.
5 from 1 vote
Prep Time 15 minutes
Cook Time 15 minutes
Total Time 30 minutes
Course Shelf Life
Servings 1 Serving


  • Walnuts
  • Air-tight containers or Ziplock bags
  • Labels and markers


  • Make sure to label your container with the content and date.
  • Store the container in a cool, dark place, like a pantry or fridge.
  • If you freeze the product, thaw it in the fridge before using. Always check for signs of spoilage before using.
Keyword How Long Do Walnuts Last
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