Scatterbrain said:...seeds take a looooong time to flower here as our growing seasons are so very short-- 5 years (or even longer) is not unknown for daylilies if you don't have heated greenhouses or specialist set-ups.
Do you think your generally cooler summers have more to do with that than short seasons? Do you get a lot of cloud cover? Are you growing near or under trees? Is there a lot of shade on your seedling plot? Are you feeding enough? Traditional gardening lore says that too much nitrogen promotes rank growth and fewer flowers/fruit. Not only has that been disproven, but as monocots, daylilies are gross feeders that demand a good supply of nitrogen.
Rich Howard of CT Daylilies has a Dan Trimmer article on his site explaining this;
http://www.ctdaylily.com/trimm...
US growers in zones 5 and 6 can see a good portion of their crop bloom in the second season from winter-sown seed. In that situation, anything that hasn't bloomed by the end of the third season is unlikely to be anything special, and even if it were to have a nice flower, something with so little vigor probably shouldn't be saved.
