Q.what container plants will tolerate hot afternoon sun?
What container plants will tolerate hot afternoon sun?

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These articles will help: https://www.gardeningknowhow.com/ornamental/flowers/fgen/full-sun-plants.htm
https://www.gardeningknowhow.com/special/containers/container-plant-watering.htm

Periwinkle, rose moss, and purslane all do good in hot Texas afternoon sun. All pretty much bloom every day all summer. I have the rose moss and purslane in pots and overwinter it in the garage with only minimal water. In spring I put them back out and they come to life again.