While cleaning in my basement this weekend (a traumatic thing to do cuz I'm a packrat) I found a jar of okra seeds that I saved about 15 years ago. Maybe 16 or 17 years, but less than 20. I started to throw them out, but I was curious if they might still be viable. So I took about a dozen seeds and soaked them overnight (didn't look promising, half of them were still floating the next morning) and then wrapped them up in a damp paper towel. When I peeked at them this morning, most of them were already sprouted -- that's less than 48 hours.
They are telling me that I need to plant okra next year.
Bob