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How to store weed properly to keep it fresh, potent, and smell-proof. Everything you need to know about cannabis storage.
Poor storage doesn't just dry out your flower. It actively degrades it—cannabinoids break down, terpenes evaporate, potency fades. The stuff you bought a month ago isn't the same stuff anymore.
Proper storage preserves what you paid for.
What Degrades Cannabis
Light. UV rays break down THC into CBN, which has different (and generally less desirable) effects. This happens surprisingly fast—studies show significant degradation in weeks under direct light.
Air. Oxygen degrades cannabinoids and dries out flower. Every time you open a container, you're exchanging fresh air for the stale air that was protecting your weed.
Heat. Warmth accelerates every form of degradation. It also promotes mold growth when combined with moisture.
Humidity. Too dry and trichomes become brittle, terpenes evaporate, flower crumbles. Too moist and you get mold. The sweet spot is 55-65% relative humidity.
The Ideal Container
Glass jars with airtight seals are the gold standard. Glass is non-porous—it doesn't absorb odors or leach chemicals. Mason jars work. Purpose-built stash jars work better.
UV-protected glass (dark amber, violet, or opaque) adds light protection. Clear glass works if you store it in darkness.
What to avoid:
- Plastic bags: Porous, build static (which pulls trichomes off your flower), may leach chemicals
- Plastic containers: Same issues, plus they can impart taste
- Metal containers: Can affect flavor unless lined
- Paper bags: No moisture control, no smell protection
Humidity Control
Boveda or Integra packs maintain specific humidity levels inside your container. The 62% packs are standard for cannabis. Drop one in your jar and forget about it.
These are two-way humidity control—they add moisture if it's too dry, absorb it if it's too wet. Replace them when they get crunchy.
Worth the small investment. Your flower stays smokable for months instead of weeks.
Smell-Proof Storage
Airtight glass contains most odor. For additional discretion:
- Look for containers with silicone gasket seals
- Carbon-lined bags and pouches absorb escaping odors
- Double-container setups (jar inside a bag) add another barrier
- Smell-proof stash boxes with rubber seals lock everything down
The stronger the strain, the more containment you need.
Where to Store
Cool: Not cold, not warm. Room temperature or slightly below. Avoid areas near heat sources—stoves, radiators, sunny windowsills.
Dark: Closet, drawer, cabinet. Anywhere light doesn't reach regularly.
Stable: Temperature and humidity fluctuations stress your flower. Pick a spot and stick with it.
Not the refrigerator: Too cold, humidity swings when you take it out, and you don't want your weed smelling like last night's dinner.
Not the freezer: Common myth that this preserves weed. In reality, freezing makes trichomes brittle—they break off when you handle the flower. You're literally knocking off the good stuff.
How Long Does Weed Stay Fresh?
Properly stored, cannabis maintains quality for 6-12 months. After a year, expect noticeable potency loss regardless of storage.
Realistically, most people aren't storing flower for a year. But proper storage means what you bought three months ago still smokes like it should.
Storing Different Products
Flower: Everything above. Airtight, dark, cool, humidity-controlled.
Pre-rolls: Same principles, but pre-rolls dry out faster due to surface area. Keep them in tubes with humidity packs if possible.
Concentrates: Less fussy than flower. Glass or silicone containers work. Keep them cool—concentrates can melt and make a mess at warm temperatures.
Edibles: Follow the original packaging. Gummies and chocolates go in cool, dark places. Baked goods have shorter shelf lives and may need refrigeration.
Vape cartridges: Store upright if possible, room temperature. Extreme cold can affect viscosity; extreme heat can cause leaks.
Ground Flower: A Special Note
Once you grind flower, the clock accelerates. More surface area means faster oxidation, faster terpene loss, faster degradation.
Grind only what you need for the current session. If you must store ground flower, keep it in a small airtight container and use it within a few days.
The Bottom Line
Quality cannabis deserves quality storage. Glass jar, humidity pack, dark cool spot. That's 90% of optimal storage for less than $20 in supplies.
Your future self will taste the difference.
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