How long does it take for marijuana to get stale?

It really depends! How much you plan on smoking and the quality of the bud. I smoke a small amount daily...and with a pound, i think I'm set for well over a year. I Dont roll joints or blunts which tend to burn thru a lot more weed.....and they're also not the healthiest choice. I estimate i burn a half gram daily....so you do the math.