Shelf Life of
Flax Seeds

How Long Do Flax Seeds Last?

Flax Seeds
Do flax seeds go bad? How long do flax seeds last? The shelf life of flax seeds depends upon a variety of factors, such as the Best By Date and how they are stored. Flax seeds are rich in anti-oxidents and their oil is highly unsaturated [1]. Flax seeds have become more popular lately because of these health benefits. The shelf life of flax seeds is so long that many ask do flax seeds go bad?

When properly stored, the shelf life of flax seeds beyond their best-by date is approximately…

Opened/Unopened Pantry Fridge/Freezer
Past Printed Date Past Printed Date
Flax Seeds last 6-12 Months 1 Year
Flax Meal lasts 1 Week 1-2 Months




Of course, flax seeds last for a shorter period of time if they are not stored properly. But, like a lot of other seeds, if they have a date it is usually a best by date and not an expiration date.

How to tell if flax seeds are bad, rotten or spoiled?

Flax seeds have a mild nutty taste, if there is a bitter taste then your flax seeds have gone bad and should be tossed out.
There are of course certain health risks associated with all spoiled foods, so always remember to practice food safety and enjoy them prior to their expiration.

How to store flax seeds to extend their shelf life?

Proper food storage is the key to extending the expiration date of food. The best way to store any type of seeds is in an airtight container in the refrigerator at a constant temperature. If you purchase from large bins, be sure you shop somewhere that has a quick turnover of product. Flax meal should be purchased from the refrigerator section and then kept constantly refrigerated, or better yet frozen, once home. Seeds may be kept in a sealed container in the pantry away from heat sources (cool, dark & dry), but will enjoy a longer shelf life in the refrigerator or freezer (also in a tightly sealed dark container).
In either storage option, it is best to avoid clear containers or bags because light will increase the degradation process. Purchase in vacuum sealed packages whenever possible, because less exposure to oxygen is always best because of the unsaturated oils being very susceptible to oxidation [1].
It is more economical to buy the seeds, which will last longer, and then grind them into meal with a coffee grinder or in a Vitamix dry container as needed.
For a long term option, both seeds and meal can be frozen in an airtight container.
Some benefits of proper food storage include eating healthier, cutting food costs and helping the environment by avoiding waste.

How long are flax seeds good for when prepared in a dish?

How long do flax seeds last? That depends. How long does bread last? In general, seeds will only last as long as the quickest expiring ingredient in the recipe. To find out how long other ingredients are good for, please visit the Dairy, Drinks, Fruits, Grains, Proteins, Vegetables and Other sections of Eat By Date or search below!

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What are our shelf life resourses?

Our shelf life of flax seeds content incorporates research from multiple resources, including the U.S. Department of Agriculture and the U.S. Food & Drug Administration. In addition, we scour the web for informative articles and reports related to food safety, food storage, shelf life of flax seeds.

*An important note about expiration dates…

Although the flax seed shelf life information provided by Eat By Date is generally reliable, it is in no way intended to substitute for the advice of a qualified health care provider. Please eat responsibly!