How to Store Cannabis Safely and Keep It Fresh
Keep cannabis away from kids and pets, and keep it fresh: practical storage for flower, pre-rolls, edibles and vapes.
Tyler Lemieux
October 22, 2026 · 3 min read
Good storage does two jobs. The important one is keeping cannabis away from children, pets and anyone who shouldn't have it. The nice-to-have is keeping it fresh, so it doesn't dry out, lose its smell or go mouldy. Luckily, the same habits handle both.
Safety first: kids and pets
Edibles look like candy, chocolate and baked goods, and neither a toddler nor a dog can tell the difference. After edibles were legalized, Ontario saw a large increase in emergency visits for young children who had eaten cannabis.
The basics:
- Lock it up. A small lockbox or a lockable drawer is cheap and works. "On a high shelf" isn't enough for a determined kid.
- Keep the original packaging. Legal products come in child-resistant containers for a reason. Don't move gummies into a candy dish or an unmarked bag.
- Store it away from food. Don't keep edibles in the same cupboard as snacks, or in the fridge door at kid height.
- Clean up after yourself. Pre-roll ends, spilled flower and vape cartridges left on a coffee table are easy for a pet to find.
- Tell guests and babysitters. If cannabis is in the house, the adults looking after kids should know where it is and that it's locked.
Keeping flower fresh
Dried cannabis is a plant product, and four things break it down: light, heat, air and moisture.
| Enemy | What it does | What to do |
|---|---|---|
| Light | Degrades THC over time | Use an opaque container or a dark cupboard |
| Heat | Dries flower out and drives off aroma | Keep it at room temperature or cooler, away from stoves and windows |
| Air | Stales flower and dulls the smell | Use an airtight container that's not much bigger than what you're storing |
| Moisture | Too much invites mould; too little makes flower crumbly and harsh | Keep humidity steady; humidity packs can help |
What container to use
- Airtight glass jars with a good seal are the simple, cheap standard. Amber or opaque glass blocks light.
- Avoid plastic bags for anything longer than a few days. They let air in, and flower gets crushed.
- Size matters. A half-empty jar holds a lot of air, so move small amounts into smaller jars.
- Humidity control packs (two-way packs rated for cannabis) keep flower from drying out or getting damp.
Where to keep it
A cool, dark cupboard or drawer is ideal. Skip the fridge and freezer for flower: temperature swings cause condensation, and freezing makes the resin brittle and easy to knock off.
Sudbury winters are dry indoors, especially with forced-air heat. If your flower dries out fast in January, a humidity pack makes a noticeable difference.
Pre-rolls
Pre-rolls dry out faster than flower in a jar because there's more surface exposed. Keep them in their tubes, store them with your flower, and don't buy more than you'll use in a few weeks. Pre-Rolls Explained covers what to look for.
Edibles and drinks
- Follow the storage instructions and best-before date on the package.
- Chocolate can melt in a warm car or a sunny window, which also makes doses uneven.
- Once opened, reseal the child-resistant packaging properly every time.
Vapes and concentrates
- Store cartridges and batteries upright in a cool spot to reduce leaks.
- Keep batteries away from extreme cold. A car in a Sudbury February is a bad place for a vape battery.
- Concentrates should stay in their original containers, away from heat and light.
How long does cannabis last?
Stored well, dried flower stays good for months, but it slowly loses aroma and potency. Check for:
- Mould: fuzzy white or grey spots, or a musty, hay-like smell. Throw it out; don't try to salvage it.
- Too dry: crumbles to dust and tastes harsh. It's safe, just not pleasant.
Looking for jars, lockboxes or humidity packs? Creator's Choice carries accessories.
