In a 1976 study published in the Journal of Pharmacy and Pharmacology, researchers concluded that light is the single largest factor in the degradation of cannabinoids (such as THC and CBD) in weed. Similar to the way that UV rays from the sun damage our skin, they also break down the quality of cannabis over time. But it’s not just the sun; the lights in your house emit UV rays too, so you’ll want to store your cannabis in a cool, dark location such as a lower cupboard, or in the basement - like a fine wine!

That same study also pointed out that, while less significant than light, exposure to oxygen can degrade the cannabinoids too. Store your cannabis in an airtight container with minimal air - for example, don’t use a large container for a small amount of weed. Mason jars with a rubber seal are an excellent go-to container, however, if you’re using clear glass, make sure to store them away from the light. If you’d prefer to have your cannabis out on display, consider getting brown glass mason jars as they will filter out the harmful UV rays.

Nothing has the potential to damage your cannabis more than mold, making it unsmokable. Mold thrives between 25°C and 30°C (77°F - 86°F), so you’ll want to be mindful of the temperature where you store your stash. Avoid storage in cupboards or shelves above heat sources such as the oven or heaters - a cool, dark location is more ideal. Not too cool though: storing your cannabis in the fridge will encourage mould growth and, although some people swear by it, keeping your cannabis in the freezer can cause the trichomes to become brittle and fall off, reducing the potency.

Humidity can be another concern for mold growth, as relative humidity (RH) levels above 65% significantly increase the potential for mold to thrive. An RH level of 59% to 63% is best to preserve the flavour, colour, and aroma of your cannabis. On the flip side, if your dried flower becomes too dry, it will create a hotter, harsher smoke which can be more irritating to the lungs. Placing a humidifier pack (like that one that comes with your dried flower) in each airtight container will ensure your cannabis stays at the perfect humidity.

Do - keep your cannabis products well out of reach of children and pets.
Do - label your cannabis products, particularly edibles.
Do - store your weed in an airtight container, preferably glass.
Do - store your weed in a cool, dark location.Do - use humidifier packs to maintain proper humidity.

Don’t - leave loose flower or unfinished joints in the reach of children or pets.
Don’t - keep your weed exposed to light, especially sunlight.
Don’t - store your weed in the fridge or freezer.
Don’t - store your weed above electronics or appliances that generate heat (heat rises).