The store here is clearing out and they put jobes and espoma fertilizers on sale. I bought all the cheap bags and wonder how long they will keep if kept dry? The bags i bought are all made in the end of 2016. They are old as nobody buys Bulb food here so they sat on the shelf 9 years and now are on clearance. All bags are dry and not clumped. So i bought what was left. I wanna get more if i can find more on sale since its so cheap so im wondering if i can stock up on very old organic fertilizers and keep them dry for later?