Man, I posted on this thread well over a year and half ago. I've been doing some long term storage of buds and can still say MASON JARS are the very best.
1. Don't buy really dry bud, inspect it first. It needs to be even with moisture and dryness. I tend to like my bud slightly wet.
2. As soon as you get your bud, have a specific jar long term jar to put it into (mason jar) only take out what you might use in a week and then store that into your 'daily' jar. That away your not constantly opening and closing your main jar releasing moisture.
3. A cool, dry, dark place is best. Refridgerators/freezers aren't any good because your buds are surrounded by frozen items which contain lots of water/moisture. Trust me, I've learned from experience. You don't want to smoke moldy buds. Plus if your buds still have moisture in them (don't buy dried up buds) then yeah, mold will grow in the freezer. It's that simple.
4. I've stored bud for up to a year (no bullshit) and opened my jar to find it the same way I left it, maybe even better since it's cured for so long. Instead of using just a mason jar, double up on it. Nowadays I put all my bud in a mason jar with a screw on lid, then put that into a much larger mason jar that has the silicon around the edges and you can shut the top with the latch. I also recommend using a stainless steel jar as no light will penetrate it. I believe that's about the best you can get.
5. You may ask "why the hell is this guy storing his buds for a year?" Because every once in awhile you get that dank ass bud that you wish you could smoke on for any special occasion. 95% of the bud I get is homegrown yet I don't dig all strains. But when I do come across something that smells/looks/smokes out of this world, it's something you want to hold on to (or at the least buy a lot of).
If your truly a connoisseur then follow my advice and enjoy buds for as long as you want to. Now excuse me while I go open up a nicely cured jar (10months) of an unknown purple strain.
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