Buy it. As long as it doesn't get damp or exposed to extreme temperatures the lifespan is indefinite.

awesome!

And at the same time, scary.

Morpheus, do you think a detached garage in summer could generate temps extreme enough to cause a problem? I'm sure mine gets over 100F at times, but not sure just how far over.

Dchall, that actually made me laugh out loud! In a friendly way.

Morpheus, do you think a detached garage in summer could generate temps extreme enough to cause a problem?

I have no idea...research, research, (Muzak)...and I don't see anything offhand. Every bag recommends storage in cool and dry conditions.

For ammonium nitrate, at least, I wouldn't store it too hot. I don't think it'd explode at any reasonable temperature with the concentrations used, but that's not something I want to find out.

As long as you don't mix it with diesel fuel you should be okay! :)

Andrea, buy a few of those five gallon 'paint' buckets, with lids, for a buck apiece. There's a tight, water/moisture proof container that seals up easily, to keep the fertilizer in.

good idea (buckets). I never thought it could be a safety hazard to store on a shelf in he shed...?

I never thought it could be a safety hazard to store on a shelf in he shed...?

I'm just a worrywart. It's theoretically possible that a high concentration of ammonium nitrate (which can be extracted to make some really explosive stuff) plus a very hot locale plus a static discharge could be exceedingly unpleasant.

It's also theoretically possible that I'll get hit by a meteor this evening. I won't lose any sleep over it.

And like Tak said above, it's unlikely that you'll be mixing fuel with it. Um...by the way, even if you watch Mythbusters (which I don't, lousy science)...don't do that.

The buckets are more to keep it dry and in nice, individually-sized loads for you to use.