a couple weeks with a pretty consistant potency, if they aren't air tight. if its just a baggy they'll become weaker as time goes bye. up to several years if stored just right. but more or less a couple months as long as its in a cool, dry, preferably dark place. just ermember: the more heat, the less potent. the more air, the less potent. the more moisture, the greater the chances of them rotting.
