Seedfork, I think that 300 day number is a gross exaggeration--that's nearly 10 months from a single cultivar!! I do some really long bloomers in my garden. Some have reached 5 months, but 10??? The plant would probably die after producing the energy to bloom for that length of time. Your best bet is to focus on EERe (extra early rebloomers ), MRe (mid season rebloomers) and LRe (late rebloomers). With that mix of daylilies, your bloom season should be maxed but it probably won't be 10 months. I've had 8 months of bloom in the garden and I thought that was wonderful!! They started in very early March and ended in late October. That requires no frost during the winter.
Look for the Popularity Polls on the AHS website to find out what daylilies people grow in your region.
I think the All American people are seriously overselling their unregistered cultivars.
