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Your Handy Guide to Cannabis Storage

Your Handy Guide to Cannabis Storage: © Cliff DesPeaux / Reuters / Corbis

© Cliff DesPeaux / Reuters / Corbis

Leafly

At some point in our cannabis careers, we’re all posed with the question, “How long is my cannabis good for?” Maybe you’ve found a few nugs tucked in your winter jacket from last year’s ski trip, or when harvesting a medical crop you may need a way to safely store the excess buds until you’re ready to consume the fruits of your labor. Like a fine wine cellar or whiskey barrel, cannabis is best when aged in a cool, dark place, and while there is no steadfast expiration date for cannabis, there are a few key elements to consider when storing cannabis for any extended period.


[Photo courtesy of flickr / Will Luo](https://www.flickr.com/photos/analogian/65149314/)

Photo courtesy of flickr / Will Luo

IDEAL TEMPERATURES FOR STORING CANNABIS
Mildew and other molds on cannabis and other organic matter thrive in temperatures between 77° and 86° F, so basic precautions of keeping your cannabis in a cool, dark place will go a long way. Excessive heat can dry out the cannabinoids and terpenes that have taken months to develop. When these essential oils get too dry along with plant material, it can result in a hot, harsh smoke.

Lower temperatures also slow the process of decarboxylation of cannabinoids, the process that transfers THC-A into the psychoactive THC and eventually degrades into the less desired CBN. Additionally, warm air holds more moisture than cold air, which brings us to the next consideration.

[Photo courtesy of flickr / Nannydaddy](https://www.flickr.com/photos/nannydaddy/2737156/)

Photo courtesy of flickr / Nannydaddy

HUMIDITY FACTORS FOR CANNABIS STORAGE
Humidity control is paramount to keeping mildew and other mold contaminants away from your cannabis. Keeping your cannabis stored in a controlled environment with the proper relative humidity (RH) ranges can be a bit of a balancing act, but the general consensus is to keep cannabis between 59% and 63% RH when stored to maintain and enhance color, consistency, aroma, and flavor. Keeping your RH below 65% reduces the chances for mold to occur. However, if your RH drops too low, you risk your trichomes becoming brittle and drying out the essential oils.

[Photo courtesy of flickr / Andrea Schaffer](https://www.flickr.com/photos/aschaf/8329496198/)

Photo courtesy of flickr / Andrea Schaffer

LIGHT SETTINGS FOR STORING CANNABIS
Harmful UV rays break down many organic and synthetic materials. Similar to the way your grass turns brown at the end of a long sunny summer, or how a car’s paint begins to fade when it is not garaged, UV rays will degrade your cannabis over time. A study conducted at the University of London in the 1970s concluded that light was the single biggest factor in the degradation of cannabinoids. The same study concluded that cannabinoids maintain stability for up to two years when stored under the proper conditions, though it can remain effective and safe to consume for much longer as the essential oils slowly break down over time. Storing your cannabis out of direct light will also help you control the temperature.

[Photo courtesy of flickr / wonderlandforever](https://www.flickr.com/photos/wonderlandforever/5615049641/)

Photo courtesy of flickr / wonderlandforever

AIR CONTROL FOR CANNABIS STORAGE
While cannabis needs oxygen during growing and curing, storing your cannabis in a container with just the right amount of air is crucial to keeping it fresh and true to its original form. Having too little air can greatly affect the relative humidity, especially if the buds are not completely dried before storage. Too much air, on the other hand, will speed up the degradation process as the cannabinoids and other organic matter are exposed to oxygen. There are a variety of hand and electric vacuum pump attachments available for canning jars that will help you minimize oxygen exposure.

[Photo courtesy of flickr / Mark](https://www.flickr.com/photos/eggrole/5076017115/)

Photo courtesy of flickr / Mark

HOW TO STORE YOUR CANNABIS
• Store out of direct sunlight in a cool, dry place.

• Store in containers with a neutral charge, like glass jars.

• Use hygrometers or products like Boveda to monitor and control RH levels.

• Vacuum seal jars and containers to minimize oxygen exposure.

• Separate your strains to maintain their individual flavor profiles.

• Look for the many exciting new ways to store your cannabis. The cannabis industry is growing every day, with new products and companies like Cannador and The Bureau designing solutions for all of your cannabis storage needs.

[Photo courtesy of flickr / Goodiez](https://www.flickr.com/photos/thagoodiez/5453070564/)

Photo courtesy of flickr / Goodiez

HOW NOT TO STORE YOUR CANNABIS
• Don’t store in the refrigerator. The fluctuations in humidity and temperature can actually increase your chance of mold and mildew.

• Don’t store in the freezer. Freezing temperatures cause the fragile trichomes to become brittle and break off like little icicles when handled.

• Don’t store in plastic bags or containers. Plastic often has a static charge that can attract precious trichomes. If you must use a plastic bag, only use it for short-term storage of small quantities of cannabis.

• Don’t store above or around electronics or appliances that give off heat. Heat rises – instead, store your cannabis in a low cupboard, shelf, or in the basement of your house, much like a wine cellar.

• Don’t use a tobacco humidor. Most use cedar wood, which has oils that transfer and can influence the flavors of your cannabis. They also tend to employ sponges that use propylene glycol to regulate humidity and can oversaturate your cannabis.

• Don’t store grinders, pipes, or other paraphernalia with your cannabis. The ash and resin from burnt cannabis tends to linger and will stink up any storage container. Also, it is simply good etiquette to keep your supplies separate and clean.

[Photo courtesy of flickr / linguo](https://www.flickr.com/photos/merkury_thunderkat/2431924905/)

Photo courtesy of flickr / linguo

OTHER FACTORS FOR STORING YOUR CANNABIS
Products infused with cannabis, such as edibles and other perishable creation will have different storage guidelines. We do not recommend that you store these items for long periods of time. Follow the directions on the package and store your edibles similar to ordinary, food-based items. Alcohol tinctures and other cannabis concentrates seem to be less susceptible to mold and other contaminants due to the reduced amount of bio matter. However, we still recommend following the basic guidelines outlined above to protect potency and minimize possible contamination.


This article originally appeared on Leafly.com.


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