mason jars are opened for short periods only during the cure (and removing whatever is needed for the bowl)...other than that there's no need to do it afterwards. i keep mine stored in jars in the fridge and have never had mold probs...but i have gotten mold in jars when kept outside the fridge too long before the cure finished (iow, it was still a bit moist and the closed jar only added to the mold prob).

to sum it up...i suggest storing in canning jars, inside the fridge after the cure is finished.
del... Reviewed by del... on . Mason Jars, Preventing mold. I will be keeping some weed in a mason jar for a couple months, and wondering are these jars completely airtight? I wont be drying buds before putting them in, so any tips on preventing mold? I have heard to open the lid once in a while and turn buds around to allow air circulation. I live in a dry climate and wont expose it to heat or light. Any advice would be appreciated. Rating: 5