I've been curing some OG Kush in a jar for 2 years now, simply because it was the best weed i've ever grown, and it hasnt gone stale, "bad", spoiled, moldy, or anything..

Although my old roommate once gave me 4 ozs of freshly cut top nugs that had "budrot" as he calls it.. thats the ONLY time ive ever thrown out weed of any sizeable quantity..

My advice, NEVER try smoking weed thats gone moldy.. even touching the stuff can cause you health problems... I didnt try smoking any of it, but just the appearance and the smell was enough to freak me out.. The buds looked normal on the outside, but when you break into them, its all brown and squishy inside and smelt of ammonia, cinnamon, and death...