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. 

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

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

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    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

    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. 

    the best way to store cannabis

    Well, remember the four primary considerations: 


    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!

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    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!

    Harvest Guide

    • Time your harvest for Perfect Taste
    • Get THC levels for a Perfect High
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      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. His passion for growing lead him to develop his own Gold Leaf strain. Now, Robert is dedicated to sharing his knowledge with the world.... [Read full bio]


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        11 comments on “Freezing Marijuana – Pros and Cons”

        1. 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.

        2. 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!

        3. 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”.

        4. 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?

        5. Hi Craig,

          I’m sorry to hear that! Please get in contact with our customer support team about your ungerminated seeds, they can help you get some replacements! 🙂

        6. 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!