With all the great weather we have been having I thought I would harden off some of my seedlings. I had them in our front porch which I thought would be warm enough even with the low of 1 degree (about 34F), but I guess it wasn't. Some of the plants are clearly lost, however some only look slightly wilted. Is there anything I can do to bring them back? The ones that might be able to be saved are some morning glories-cardinal climber, and some torenia.

Thanks for the help, PrairieClover