How do you care for the plants after the first bloom? The ones I have are supposed to continue blooming all summer, but I don't know how to prune them.
No pruning necessary. Just cut off all spent scapes (bloom and stem). Some daylilies are "reblooming" and will give you another set of blooms later in the season. Some are "extended" which provide a long season of bloom. Some bloom once a season and that is it. I don't know of any that bloom all summer, however. They need a rest period.