Are you planning to eat them next year?
All parts of the daylily (Hemerocallis sp.) are edible. Flowers can be chopped into green salads, eaten as a garnish, or deep-fried.
All cultivated varieties of daylily are edible.
Flowers and flower buds of daylilies are delicious and quickly prepared for eating. The flowers are used in soups, meat dishes, and with noodles. Prepare the flowers for eating by removing the basal end (ovary) and dicing the rest. Flowers can be used for garnishing foods in somewhat the same way as mushrooms are employed. These flowers add substance, color, and pleasing flavors to foods. Fresh flowers are best for eating since some flavors are altered when they are preserved by drying and freezing.
This summer, I took a mixed non-traditional salad to a playdate.
It included daylily flowers, prickly pear cactus flowers, nasturtium flowers, johnny jump-up flowers, as well as purslane, wood sorrel, plantain, and lambs quarters, among others. It was a great hit with the kids.
p.s. The tubers are supposed to be edible too though I've never tried them my self. You can find recipes on-line.