As long as you product was COMPLETELY DRY.....shelf life of a year shouldnt be a problem. As long as no air gets to it and you keep it in a cool dark place. If it were my stuff I would make sure that there are no signs of moisture in the jars and open then several times a day just for a few minutes for the first 2 weeks or so. SPin the buds around to make sure they are all getting air. THe longer the cure the better the smoke. Hope this helps. Every bud has different shelf life but some people claim to hold onto theirs for at least a year....wish that was a problem I had.