Old Iowa U article says cucumber seeds are good for 5 years.

Seed Saving Handbook by Jack Rowe says up to 10 years
I've got some bean seeds that were packed for 2020 that I probably need to ditch. Beans I planted last week are also 2020 so I'll see about those soon. Everything else I planted last week melon/squash were 2022 and should be fine. Several years ago, I tossed some grocery store white beans out in the yard that were long term food storage but were 10+ years old. Half of them sprouted just sitting on top of moist dirt.
The beans I planted are bush type but I have a few types of pole beans, also for 2020. Hate just throwing them away. Might stick a few of those in the ground and if they come up, drop some baling twine from the tunnel frame and let them climb that.
I hope to have the tunnel I’ve been building covered up by the time winter arrives.
At the rate I’m going I’ll be lucky to have it closed in by this time next summer.