manure
 

i've got a couple of bags of composted manure from last year , unopened, is it still good to use this year in my rain gutter grow system? or should i get new? (i know i know, it's composted manure and the new probably has been sitting around a year too, just thought i'd
ask to make sure! ) lol tom

Yah. Composted manure is essentially dirt.

Dirt don't go bad, or we'd all be in big trouble.