My very 1st daylily to bLoom in the spring is Dumortieri. Not fancy at all, but plenty of blooms. I think it is a species daylily. Has bloomed in early April, but even in a really cold spring it blooms before the end of April here. Does not rebloom though. The next one to bloom is Fern stone, which has rebloomed each of the 3 years I have had it.
