These are prized and collected for their flowers, and numerous varieties are bred, sold and traded. For more info on daylilies as gorgeous ornamentals visit Ellen Roddy's site, or go to The New York Botanical Gardens which has an entire daylily walk with dozens of varieties. We both survive transplanting and aren't too picky about where we're replanted. We're perennials, and hard to get rid of once you've got us. If you dig up a daylily to harvest it's tubers, you can replant the roots and the plant will grow back.
Daylilies also do well in containers.
During the winter, while I am living off the food I put by for the cold time, the daylily lives off of the starch in its tubers. But we don't wait around for the warm months to get on with life. Don't think that just because daylilies can take care of themselves they can be taken for granted. If you decide that you like each other, have a heaping side dish of steamed daylily tubers with a little butter, crumble the dried petals into your soups or snip them fresh into your salads for a bright bit of color and a delicate oniony taste. And when you get around to that Saturday afternoon barbecue in June, casually offer your friends some gourmet pickled daylily buds while they are admiring the flowers and the gardener.