I would assume since it is dried, it should last quite awhile. I just bought some from a spice shop this past weekend for a White IPA and plan to keep it around a bit. Or if you're really worried about it, you can just make a tincture with all of it and that will definitely last a long time.
Beer is the center of everything. Everything revolves around beer. When you drink beer, everything revolves. Therefore beer is the center of everything. University of Waterloo Engineers
Primary/Secondary: Assassyn IIPA (Odell's Myrcenary clone)
Bottle: Battering Ram Belgian Golden Strong Ale