Larry,
I don't believe PANIC IN DETROIT is pod fertile at all. You should probably be content to just use the pollen. I bought it when it was new and tried it every which way and could not pod it.
Karen,
Yes, southern growers often use greenhouses to start plants early in pots so that they can be finished with hybridizing by the time it is really hot outside. Many also use shade cloth in the garden to lower temps for the daylilies.
