So I've seen lots of pics of jars etc but can someone tell me what the jars are actually doing?

Thanx
The X Man Reviewed by The X Man on . Curing My grow is dried and was jarred to cure but some of it not for very long.ALthough it's dry now and in ziplocks if I put some back into jars will it cure it out better? Or did I miss the boat? Rating: 5