I lived in humbolt for years and always kept my head stash jars in the freezer, and kept many jars fresh for very long periods of time with 0 affect on the potency. I also had friends outthere who did that as well
a glass jar with a very tight seal is the way to go. if you're storing for long periods of time (more than 2 weeks) or are opening the jar frequently, it helps to add 2 or 3 tiny pieces of sponge soaked in distilled water inside the jar to keep things fresh. do not use regular water... distilled only. also, check evey 2 weeks or so to make sure that humidity inside the jar is at acceptable levels (67-70% is ideal; once you dip below 65% things will gradually start to dry out; and at 75% you may encounter mold). using this method i have stored stuff for up to a year with excellent results.
after the temperature drops below 32 trichomes tend to break and fracture, the potency prob wont change much but your thc will degrade faster after the trichome heads are busted open. same reason you shouldn put trim in deep freezes before making hash.
I got a stash in my coal celler in a Old tin can with a lid , thats been there for over a year. I hope those fuckers dont start growing mold. I guess I know what I will be doing this weekend . HA HA HA
In years past I've kept extra meds in my freezer for long periods inside jars with no loss of potency but some brittleness will show up. Now Im just keeping my jars closed tight inside and have had zero problems. My good friend is a botonist and told me that you can keep the meds for up to 24 moths that way before it starts to really decompose and lose its potency. GOOD LUCK
Aint No Time To Hate, Barely Time To Wait.........