yes it will..

I have had jars frost up with moisture and I have had to leave the lid off the Jar in my dry room till the moisture is gone...

I strongly reccomend you dry the Bud properly first..
I have seen Bud dried On Paper in a sock draw before.
so you dont have to hang it.
But Its Best their dry before your JAR it....
NoosaHeads Reviewed by NoosaHeads 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