Depends on how long you need to store the herb. If you have say an oz. Bagged and boxed away in a cool room (atleast not overly warm) should work just fine. Even a pound, smoked regularly and stored in a jar tucked away from direct heat/light has proved allright for those I know. But let's say you rack in a giant crop, or don't smoke heavily or on a regular bases and jsut bought a pound; then storage in a freezer or fridge proves to be just fine. Just make sure it's bagged (I've known people to wrp a giant 'block' of it in plastic wrap; then they would just tuck it away in their freezer. Just make sure the tempatures aren't low enough that frost will form I guess, I'm pretty sure they never had problems with that.