I thought our area , south Texas USA was tough! We started getting 100 degree days in March-April and weeks of 100s in May. It's definitely getting hotter and drier here. I grow full sun plants in shade or part shade here. I'm 9a. You might try tree: jujubes, pomegranate, olive, citrus, opuntia cactus (the fruit are red, the green edible pads are called nopales/nopalitos). Mulberry bush/tree (with shade), pigweed/amaranth(greens and seed), cranberry hibiscus and roselle (maybe) bushes, date palm, acai palm, passioflower vine (P. edula), daylilies maybe as a winter annual, all parts are edible. Look at oasis pictures, take pictures of what fruit plants grow and send to local agriculture departments at local universities, if you have a smart phone and good Internet. Look at sites in Israel and the Middle East, depending on language translation ability, Australia (the interior is desert), where ever there is desert. Keep trying! Good luck!
