Hi Tiptonla!
to ATP!
My two cents: if you have the pots it is a great way to start and settle new plants, especially in warmer weather. If potting them till fall is a pain, and your 6a summer will stay under 90 degrees or so ... maybe go ahead with in-ground planting.
I know that others here with more first-hand experience will be able to chime in when they get a chance, and let you know how they decided what to do with the new daylilies, and how they are doing now.
You have some real classics, and great beauties in your list! We'd love to hear what you decide and how things go after they arrive. If you have any questions along the way, this is a great place to ask them!
