Well, my .02 worth is about the size of the plants you have. I have mine growing in partial shade and full sun. Most are young, small single fan seedlings. Only about 1/3 of mine bloomed for the first time this year. I think the key for small plants is they need time to get established, get their roots going strong, perhaps even grow another fan, and then you will see a show.
I will tell you that I did get blooms from those in partial shade, but the ones I have planted in full sun bloomed like crazy. More flowers that put on a show longer than the partial shade daylilies. Everything that was mentioned above should be considered. And I DO agree with the alfalfa pellets added to the soil. They really put on growth when they have alfalfa mixed into the soil.
My guess is that they will do better later this season once they've settled in or next year.
