Try tossing them in the freezer for a week, then let them slowly get up to room temperature. Goal is to try to mimic the winter/spring natural cycle. I have heard this method from some older heads, and have used it one time with improvements to poor germing seeds. Might be anecdotal/broscience but always worth a shot. Try just a few to start.
I germed some 5 years old seeds the other day with good results, so don't throw in the towel yet.
I germed some 5 years old seeds the other day with good results, so don't throw in the towel yet.