Can weed go bad? Storing your weed question.

Air, light, and heat all degrade weed. Simplest solution is roll your stash in a small zip lock baggie. Squeeze the air out as you roll it up, then zip it shut and tape it. Then put it in a small paper bag and put it in your refrigerator. If you dry it properly you can do the same as above but keep it in your freezer and it will keep its potency for many years.

Make sure there's no mold, I've heard that can kill you if smoked.

It's best stored in a cool, dark, airtight container. I use an air tight glass container which i place in the freezer.