Roycroft Daylily Nursery is in Georgetown (south of Myrtle Beach)...

If she comes to Charleston, we can sure give some advise~

So she will be moving in June, right? At Myrtle Beach she will need to wait until about Sept before she starts buying anything. It's going to be too hot for things to do well. Have her look around and check with the nurseries to see who will be getting in new things about then. Anything she gets now will probably have been in a pot for a good while.

Myrtle Beach is close enough to the Ocean that it's about a zone different from similar areas farther inland.