You will get a better answer over on the daylily forum about specific cultivars but in general if a daylily is listed as dormant it will not do well in your area. It needs a colder, dormant period. Those marked as evergreen or semi-evergreen should do well in the Forth Worth area. Also very dark colored daylilies don't tend to hold up very well is blazing afternoon sun. You can probably look up your daylilies on the plant database to get more information.
