Larkspur does fantastic in the cracks between the street and the curb around here, so I'd say that would do well there. Do you like Sedums? Are you stuck on smaller plants? What about a rambling rose on the fence? A Lantana covered with visiting butterflies? Evergreen Rosemary?

Delphinium - no, I think of that as more of a cool season plant in the south.
General info: in the south and southeast plants that are for "sun" will generally need afternoon shade, at least some shade. The afternoon sun is the harshest. You will need to mulch with some organic matter (shredded bark, shredded leaves, compost, here around Tupelo MS I use pine straw mostly). Your plants may do better if you irrigate more often. If you are like me, I cannot and will not water all the time, so I have to eliminate plants/flowers that need alot of water. But if you have the money and time and inclination, you will probably see your plants doing much better if you water deeply and often in the very hot days w/o rain. I am not familiar with the other flowers you asked about. Zinnias love heat, also black eyed susan, lantana, sedum, coneflower, and herbs like rosemary, thyme, sages. Laurie

I've had good luck in my sunniest areas with the smaller marigold varieties (like Queen Sophia or Dwarf Bolero), Centratherum, the Cosmic series of Cosmos, hollyhock, rattlesnake master, and herbs (in addition to Zinnias, annual and perennial Salvias, coneflowers, and black-eyed susans. The most successful in this area is Ageretum (floss-flower), but I've found it wildly invasive, and spend hours pulling seedings each year.

Lo and Behold butterfly bush did well and needed no deadheading. Salvia Greggii, Lady in Red Salvia, and Blanket Flower are in my dry bed and love the heat.

Hi ala8, are you saying you have a BB called "Lo and Behold" or was that just the intro to your sentence, like you were surprised? Sorry, I'm confused...

Is this a first-year shrub in your yard?

Thanks everyone. Sorry for the late reply. I would love to do a climbing rose or something bigger, but I'm trying to stay away from anything that might be neglected by future tenants and cause a nuisance for neighbors. There is a wisteria here that is out of control and the neighbors hate it. The yard was a little neglected when I moved in. I have seeds for marigold Jaguar and several different Cosmos, coneflowers and black eyed Susan. Save BES, I've started all of those indoors. I have Irish eyes coming up. Do they like heat? The package says full-part sun, but I often have different results then the seed company =) I would kind of like to do a love-lies-bleeding with Irish eyes in that corner, I think that or some marigolds would look striking together. Anyone had a love-lies-bleeding? I had never heard of them until someone posted a photo of hers on here a couple years ago. I saw it and knew I had to try it! Wondering what conditions they do best in?

Not really into yellow, but wish I had some of that Amaranthus to talk about. Very pretty! My Mom is always messing with BES's and it seems that if they have enough sun they get dry, so then you water, which they resent more... less sandy soil and thicker mulch would probably help, IDK.

IME, when a label says something other than full sun, it's the hot part of the afternoon that can be too much. Morning and/or afternoon sun is usually great for those plants. As one goes farther south, the less sun would be tolerated/needed.