Q.Do hollyhock go bad after a couple of years?
Sowed hollyhock seeds (old) but nothing came up.

Certified GKH Gardening Expert
Were they kept in a cool location or in the refrigerator? If not, they may not germinate after 2 years, but it never hurts to try.
https://www.gardeningknowhow.com/garden-how-to/propagation/seeds/storing-seeds.htm
https://www.gardeningknowhow.com/garden-how-to/propagation/seeds/does-freezing-kill-seeds.htm
https://www.gardeningknowhow.com/garden-how-to/propagation/seeds/seed-organization-tips.htm