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in-ground Peppers better for extreme temps(Arizona)

First year of growing peppers, I went a little over board and at one point had ~150 peppers, started from seed, moved to 1gal, 5gal, 10gal then eventually gave about 50 of them away and planted 100 in ground outside my house located in Phoenix, Arizona. They were all different varieties ranging from jalapenos, chiltepins and the rest were superhots

Long story short about half of them died in July during our record breaking streak of 100+ days, I did everything I could, kept close eye with watering, had them completely covered in shade cloth that had 70% sun blocking etc...

The ones that did survive(mainly chiltepin) I saved seeds from and have sowed those and about to put them outside again, I had like 2-4 superhot also survive but I never got any peppers but my plan is to save seeds from those plants thinking they would have offspring better acclimated to the extreme heat????

Anyways here is my question, is there a certain pepper or genetic that is better to survive Phoenix, Arizona's extreme heat? I got Chiltepin down. OR should I just keep doing what i'm doing? My plan is i'm going to move on to different varieties, plant them, see if they survive the heat and if they do i'll replant that. MY ultimate goal is that I have 100plants outside that can live all year long through Phoenix heat/cold.
 
I live in the lowland tropics: hot and humid all year round. In my experience, "classic" landraces cope better with extremes than "fancy" crosses. Noteable exception: chilhuacle, which produced but underwhelmingly so (too much humidity, I think).
 
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One variety that really impressed me with its hardiness was Basket of Fire. I grew 2 plants under 50% shadecloth in 2021. I came home one day in July to find them both flowering. We hit 117 F that day, and they were both covered in flowers. :shocked: Really surprised me. Most of my other plants had given up even trying to flower by that point. Okay, so the Basket of Fire plants didn't manage to actually set any pods in the middle of our hot, dry summer (and neither did anything else), but they kept trying. Once the weather finally started cooling down, they were among the first to actually start setting pods. And they were both still flowering and setting pods in December when I ended the season.
 
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