Your flower bed is lovely, Sheri.
Heat is only one of the variables. The quality of the direct sunlight can make a difference, the soil and more.
I don't have any shade in my gardening areas, so I had to select roses ... yes, I am an addict ... that could do well is less than ideal conditions. Some of my roses will go summer dormant, but not many. Some can still bloom and not fry in high heat, while others are only beautiful in spring and fall.
Smiles,
Lyn
