how long can one preserve cannabis????

is it possible to preserve some cannabis during more than one year (rolled up in cellophane) without it losing all its effect?
thank you for your answer and your experiment!!

yeah I was wondering about this, how about freezing it too?

i think that freezing it would be effecting but i think vaccuum sealing ur bud or something maybe good as well! don't know if it has been done though

I have stored some for over a year in a vacuumed sealed package in the freezer and it was fine.

i found some that i had in the freezer from a crop 3 years ago...i don't actually remember how potent it was then but i sure as shit got blazed off it 3 years later!!!

We're still smoking what we grew last summer. After we'd processed it we put it in ziplock bags, got as much air out as possible and put it in the freezer. I take some out, as we need it (usually about three days' supply), and make sure I get all the air out before zipping it back up and putting it back in the freezer.

I still get completely shit-faced on it daily. :) Even the trimmings (which were treated in the same way) are still ok and we use them in a packets of cake mix. We also have a friend who prefers less than full-strength (so we give him a handful occasionally) but who can't walk for several hours after a weakish joint made with the trimmings.

Thanks to the advice of the gurus in here we got over 110 grams of good stuff from three plants and, probably, twice as much again in trimmings - and it was our first year at growing.

Roll on another few weeks. Our 20-year-old daughter tried a spliff made with the bits we'd pinched out and was absolutely *blasted* for eight hours. :)

THC will naturally degrade at the rate of about 15% per year, but will pick up rapidly as time wears on.

Feasibly, you can get high 5 years later albeit the stone will not be as intense.

Freezing is accepted as a way to store it but for the wrong reasons.

The cold in the freezer is not what keeps it nice, but rather, the dark, dry environment is the magic of storing herbs.

Brown glass jars with airtight lids in cool dry dark spaces are as good as it gets for storing long term.