I overlooked a packet of seed in the crisper of a cross I had done last year. The seed was in a zip lock bag. I found them again three weeks ago after 11 months. (Cringe - don't think about my fridge please). The seed was just six crinkle things that I couldn't rehydrate even after soaking them in water for a week. They just floated there. I was going to throw them out but a fit of sentimentality made me plant them amongst 300 radishes I had just sowed. Well, four out of the six daylily seeds germinated while only 15 out of the 300 radishes did. I don't know which is the greater shock.
Normally I plant seed in individual punnets of seed raising material after several weeks in the crisper.