I am late to this post, but just recently discovered several bags of seeds in a shop fridge that had been forgotten. There are seed for each year since 2011 and hundreds of bags. ( a few thousand seeds) Out of sight and out of mind but they look good and some really interesting crosses that we need to try. I have sprouted 2 and 3 years old seeds so I can try 5 year old seeds. I have been told that 9 - 10 year old daylily seeds can still be just fine depending on how they were handled.
By the way, not only can sprouted seeds in stay the fridge for a long time, baby daylilies will live a couple of months in cups of water/peroxide mix. When you try to grow thousands of seedlings around a very busy work and life schedule, sometimes you conduct tests by accident.
Terry
