Heat and Droughts may have a benefit after all.
I guess I am reevaluating my South Central Texas weather after seeing post after post about fighting too much water. I use my big celadines (24 gal pots) around the yard to help shield other "full sun" plants that can't hack it. They have been in constant bloom since early May with masses of flowers and big green leaves.
They are great. Never had bug problems, nothing eats them, perfumes the whole yard, the more sun the better. Just starting to ponder when big becomes too big.