Hi, I grow in a hot dry area without much problems. It typically gets into the triple digits during our summers. As long as the plants are around two feel tall they can handle it seedlings not so much. I keep mjy girls in a greenhouse and because the GH retains moisture I only need to water them every other day but the two males I am keeping out in the open need daily watering. You can put a layer of perlite over your soil to help keep things cooler. Are you growing where you took the pictures? If so those cinderblocks/bricks do retain a lot of heat. They do look good.