beckygardener said: Have you had any experience with Daylily seeds specifically?
WRT Daylily seeds.
Longest I have stored and grown was ~ 2 years. Stored dry in dark lower humidity location then cold stratified for 45 days. I have never tried longer periods of storage.
In terms of longest in fridge as cold stratification, that was 60 or so days.
Longest I stored anything that germinated was species Morning Glory seeds - 11 years. Had ~ 40 % germination.