This will help the plant compensate for water loss while it's re-establishing itself. I also trim the roots to 6-8 inches in length although there are varying opinions as to whether or not this is beneficial. In the north, planting a little deeper is recommended but daylilies planted too deep will not grow properly. Daylilies can be planted as single plants when you are doing a mass planting, or in groups of 2 or 3 together which form clumps. When I plant single plants, I space them about 12 inches apart while I space the groups 18-24 inches apart.
Some plants tend to be more robust than others.
These should be given extra room. Probably the most important ingredient in beautiful daylilies is water. While daylilies can withstand drought because of their fleshy roots, I find it amazing the difference I get when they get all the water they need. This was brought some years ago when our daylily club was touring gardens in Louisiana. In several of the gardens, we were enjoying some of the best blooms we had ever seen on some varieties we were familiar with and commented that we just had to find out what kind of fertilizer the grower was using to produce these spectacular blooms.