How to Store Marijuana Seeds

Whether you’re keeping cannabis seeds for future use or you’re dealing with leftovers that need storage, knowing exactly how to store hemp seeds is critical in ensuring their viability. Your seeds’ quality can affect the quality of the other CBD products you’ll be making out of them, too.

If you are clueless about the best way to preserve weed seeds, below is a handy guide you can use.

The Best Conditions for Preserving Marijuana Seeds

Air Humidity

Cannabis seeds should be kept somewhere cool and dry. Exposure to extreme air humidity can be detrimental to their quality.

So, as much as possible, try to keep your seeds in an airtight plastic container. Then, place your container in a dark area.

You see, like most living organisms, cannabis seeds enter a state of rest during preservation. Once they get exposed to humidity, the nutritional substances they contain are released, triggering the process of germination.


Your refrigerator is the best place for you to keep your cannabis seeds since it prevents the seeds from being exposed to temperature oscillations. Now, once you placed the seeds in your freezer, remember not to take them out too often.

High temperature can also inhibit germination.


Light is another factor that can trigger seed germination. With that in mind, try to expose your cannabis seeds to as little light as possible.

Oxygen Concentration

Minimizing oxygen exposure is critical when storing hemp seeds because it prevents seed respiration. Doing that prevents premature germination.

Different Methods of Storing Cannabis Seeds

There are various ways to store cannabis seeds but in this article, let’s talk about short-term and long-term storage.

If you are keeping your seeds for a short term, your best option is to keep the seeds in a lockable plastic container inside your refrigerator. Your average cannabis storage box might not be enough, particularly if it’s not airtight.

In case you’ve just bought your seeds, they are probably inside a vacuum-packed and airtight packaging. Keep the seeds that way and put the package inside a lightproof container.

It should keep the seeds good for a few months.

Now, if you are thinking of long term storage, either for treating chronic health issues or mild symptoms, then you need a vacuum-sealable container. For this, you can use a glass mason jar, provided that you put it inside a container that’s light proof.

No matter what container you use, the goal is to keep as much heat, air, light, and moisture away from the seeds. That way, you’ll be able to stop them from aging and triggering the germinating process.

A word of caution:

If you decide to keep your seeds inside your refrigerator, remember to thaw them first. Keep the seeds in a box for 6 hours after taking them out of the refrigerator to allow them to slowly reach room temperature.

Now, if you keep your seeds in the freezer, they need to be germinated right away. There’s no need for you to thaw the seeds first.

Best Places to Store Cannabis Seeds

While there’s still no strict rule on where you should store your cannabis seeds for optimum storage results, here are three of the most common recommendations:

Room temperature

Keeping your cannabis seeds in an airtight container within room temperature should allow them to last for a few years. Adding a desiccant increases storage results


Your cannabis seeds need to stay in a cool and dark place if you want to preserve them for a long time. Considering that, your refrigerator is probably the first storage place that comes to mind.

Although ideal, your refrigerator’s fluctuating moisture factor can be an issue. Opening and closing its door expose the seeds to different moisture levels.

If you are planning on keeping your seeds in your refrigerator, remember to place them in an airtight container with a desiccant first. Keep the container somewhere in the back of the fridge because it has the lowest moisture present.


Can you freeze marijuana?

Well, contrary to what most people think, freezing isn’t the best way to preserve weed seeds. The process can potentially destroy the seeds.

If you really need to keep your seeds at a low temperature, there’s a piece of special equipment that.

How Long Do Weed Seeds Last?

In general, cannabis seeds can last several years and if you’re able to store it properly, you should be able to keep it for up to 5 years.

If you store your seeds inside your refrigerator, they should be good for up to a year. When frozen, they can stay good for up to 2 years.

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