You also need to consider what type of seeds they are. Some seeds like members of the allium family (onions) or parsnips are only viable for a year or two while most cole crops (cabbage) can be good for several years. Do a search for a seed viability chart. I think you'd be good on 2012 seeds. I market farm and buy most of my seeds in bulk, which often means I have older seed. Do the germination tests as mentioned above or just plant a little heavier if in doubt.
