Freezing Marijuana – Pros and Cons

When you grow marijuana, you need to know how to store it. After all, you can’t just leave it lying around and expect it to stay potent.

Some growers stick to freezing marijuana (or even refrigeration) as a method for long term storage. However, are these the best methods? I’ll discuss the pros and cons below. 

Save Your Cannabis!

Across the country, people are changing the way they look at the cannabis plant.

Both recreationally and medicinally, more and more users and growing their own weed. Which leads to finding creative weed storage methods.

The Basics of Weed Storage

When it comes to long term storage, there are four primary factors to consider:

  • Friction
  • Humidity
  • Light
  • Temperature

Experienced growers know cannabis plants love lots of sunshine and warmth during growth.

But once the marijuana is cured, the opposite becomes true. Cured weed stays fresh longer in cooler, dark temperatures with controlled humidity. 

If temperatures go beyond 77ºF, your buds may start growing mold and mildew.

And if dry heat exists, you lose most of the plant’s essential oils. So, your smoke becomes crumbly, dried out, and brittle. It may even be harsh. 

As a general guide, here are the best conditions for storing marijuana:

  • Temperatures – Between 50 to 60 degrees
  • Humidity Levels – Between 59% to 63%
ineffective weed storage methods

Ineffective Weed Storage Methods

In addition to maintaining proper temperature and humidity levels, you also need to use appropriate containers. Here are some storage containers to avoid.

Cardboard Box

This is an ineffective method. A cardboard box is not airtight and, therefore, doesn’t keep marijuana fresh. Instead, it quickly dries out, losing its potency, as well as its original flavor and aroma

Download my free marijuana grow guide at this link for more growing and storing tips

Plastic Bag

Plastic baggies can be airtight when properly sealed. However, they also hold a lot of static charges, which attracts your trichomes like magnets.

That’s why when you remove marijuana from a plastic baggie, there are little particles stuck to the bottom and sides. 

Those are your trichomes. Every time you remove some flower from the baggie and put it back, it loses more and more trichomes, which means it loses more and more potency.

freezing weed as a method for cannabis storage

Freezing Weed as a Method for Cannabis Storage

We already discussed the ideal temperatures for weed storage, but how do you ensure that your marijuana stays within these guidelines so that it can remain both fresh and sticky?

Before we answer this question, let’s first discuss decarboxylation. This is the process of activating the THC in your marijuana by applying the perfect amount of time and heat.

Until the right conditions exist, you won’t be able to feel any type of euphoria or high.

In other words, you need heat to decarboxylate marijuana to feels its euphoric effects. 

This may sound complicated, but in reality, it is not. Here are a few common ways users decarboxylate their bud without even knowing it:

  • Baking edibles in the oven
  • Creating THC butter on the stove
  • Cooking with weed in a crockpot
  • Creating liquids and topicals in a double boiler
  • Using a lighter to fire up a blunt or pipe

Many users are all for the idea of freezing bud because they believe it delays decarboxylation’s natural process. This means the THC will last longer. 

This is all true, but there are some things to look out for: 

Disadvantage of Freezing Weed #1

When freezing marijuana, you must use an airtight container. Too much oxygen could cause freezer burn.

Defrosting freezer-burned weed without it losing quality and attracting pathogens is next to impossible due to the drastic temperature and humidity changes required for defrosting.

Those changes could attract mold and mildew. 

Disadvantage of Freezing Weed #2

During the freezing process, trichomes tend to fall off and become extremely rigid and fragile.

So, the slightest touch and you lose trichomes all over the place.

Although your frozen marijuana may be stuck in the THC breakdown level, you stand the chance of lowering its potency by losing most, if not all, of your trichomes.

However, if you plan to store your cannabis to make bubble hash later, freezing weed is a great way to do it. 

An Alternative to Freezing Marijuana

You don’t have to freeze marijuana to store it. One common alternative is refrigeration. This method keeps the temperature under 77 degrees, while not actually freezing the weed.

However, opening and closing the refrigerator causes fluctuations in the temperature. This increases the chances of developing mold and mildew.

the best way to store cannabis

The Best Way to Store Cannabis

So, what’s the best way to store your weed for a long time while maintaining its original aroma and flavor?

Well, remember the four primary considerations: 

  • Friction 
  • Humidity
  • Light
  • Temperature

These all suggest that an airtight container and darkness are the best solution.

In terms of container material, glass containers (instead of plastic) are best.

They will help maintain consistent oxygen and humidity levels, which keeps your weed from drying out. 

Expert tip: A hygrometer can monitor humidity levels. 

You also need to protect cannabis from light because it can also cause your weed to dry out. 

Avoid light exposure by storing your weed in a dark space. Alternatively, you can wrap your weed jars with dark paper, burlap sacks, or other types of dark material to block out the light. 

One crucial piece of advice: 

Never store cannabis in the same container as dirty weed pipes, grinders and other paraphernalia that needs cleaning.

The dirty resins and burnt weed particles may cause your container to stink, negatively affecting the aroma, taste and quality of your stored bud.

Make sure to get your seeds before the season starts!
Check out my marijuana seed shop!

High Quality Seeds

Bottom Line

Keeping your marijuana flowers fresh may not be rocket science. But there is definitely a scientific formula to it.

Don’t store your weed in the refrigerator or resort to freezing weed. Instead, keep it someplace that’s dark, cool, friction-free, and mildly humid.

Follow that basic science, and your pot should stay fresh and potent for up to six months.

Learn to harvest and store marijuana like a pro in my downloadable Harvest Guide!

Faq about freezing marijuana

Is freezing marijuana the key?

Thanks to science, we now know that cannabis may have both euphoric and therapeutic properties. As a result, many people now enjoy marijuana for a variety of reasons. For many, the bigger question is how to store their pot.

Should they be freezing marijuana to keep it fresh?

Once marijuana is harvested, it only stays fresh and potent for so long. Just like any plant, as soon as you harvest it, the dying process begins. So, what’s the best way to store your pot for long periods without drying it out or losing trichomes?

What is the most important thing one should avoid while freezing marijuana?

Never store cannabis in the same container as dirty weed pipes, grinders and other paraphernalia that needs cleaning or else keeping your marijuana fresh will be very difficult.

Avatar for Robert Bergman

Robert Bergman


Robert Bergman is an Amsterdam-based marijuana grow expert who has years of experience from small grows to massive operations ... See profile

16 comments on “Freezing Marijuana – Pros and Cons”

  1. The USA-centered units such as Fahrenheit make this post impractical to use for the rest of us. Please include standard units such as Celsius.

    • Hi there,

      Thanks for the feedback! A large portion of our customers and readers are from the US, so that’s who we’ve tailored these articles and guides to.
      Though it may be a good idea to reference both US-based and European units of measurement, we will take this into consideration!

      Kind regards,

  2. I have heard spring fed creek water is the best for watering my plants. Should i have the water tested for content anyway?

  3. Hi there,

    Thanks for your comment. There may be some loss of potency, this is mentioned in the article itself. But the THC will not break down from freezing, freezing may actually help keep the potency. But the trichomes will become brittle, and will fall of at the slightest touch, so you may lose potency through trichomes falling off of the buds. We do appreciate your input, of course!

    Let us know if you have any question of course!
    Kind regards,

  4. I have been using a humidor since weed was legalized. Yes I have strains from that time. I use them all for different issues. For instance blue dream is great for headaches. I try to use the oldest first but I am I. No rush because I have yet to have any of my strains go bad. Use distilled water to insure mold doesn’t grow I try to keep the humidity between 60&70 and haven’t had any issues at all.

  5. Ok. Got an airtight jar, got a designated safe place in my fridge for said jar, then check/adjust temp in said fridge. Protect jar.
    -Glass surface, artight jar, dark fridge, optimal temperature.

    I was very close to freezing all of it. when I smoked cigs it’s where I kept the carton, so I assumed cannabis would be the same….. because I’m kinda dumb.

    Glad I checked, thank u for the info!

  6. what is the perfect humidity and Te.Peratute for Growing Cannabis? How can I feed my plants vitamins and which ones do they really need?

    • Kathy; We cannot addrerss all the info you need here in the blog. for the best support anywhere; Go here: and our friendly members and expert staff will be happy to guid you. Meanwhile; I suggest you download opur free “Grow Bible”.

  7. Great information. I’m sure you had to do a lot of testing to find the right answer for freezing “weed” to determine how long it would stay good. thank you for sharing!