Are there any kind of flowers that will bloom through the hot steamy south Louisiana summers?

I planted a lot of petunias but would like to find something else for the full sun that won't wilt out in the sun.Are there any kind of flowers that will bloom through the hot steamy south Louisiana summers?
http://www.gardenclub.net/Full_Sun.htm





i like


Iris , Lavender ,PeonyAre there any kind of flowers that will bloom through the hot steamy south Louisiana summers?
bougainvillea's love the hot weather !