I have some squash seeds that are dated 2009 I found in my drawer while cleaning out some papers. Do you think they are still good? Cucumber seeds dated 2010.
Cilantro seeds probably 2011.
birdhouse gourds from 2010.
wild columbine 2011
white zinnias from 2008
Cosmos from 2010.
Many seeds hold their germination rate very well over many years. What you can do is test the germination by sowing a few of each variety into a little container of soil and see how many germinate. That'll tell you which ones are worth keeping.
I've germinated tomato seeds that were over 10 years old.
Name: Glen Ingram Macleay Is, Qld, Australia (Zone 12a) (Lee Reinke X Rose F Kennedy) X Unk
I once found a rotted paper seed packet, illegible parts of which were still sticking to the foil packet enclosing seed. I planted them and that is how I got my thyme bushes. Heavens knows how old it was.
The problem is that when you are young your life it is ruined by your parents. When you are older it is ruined by your children.