I've given up on loquats here in the Coachella Valley. Like the others in Phoenix have said, they do great until July rolls around, then they turn into crispy critters. I planted a Champagne and a Big Jim, as well as dozens of seedlings. One of our drivers in LA brings me "Nisperos" from his house every year, and I plant a few every year in different locations but they never survive the summer. Same goes with Avocados. Although one rancher I know has a 12 year old, near 20 foot avocado tree, that one of his workers planted next to a medjool date palm. It's never thrown a fruit one though.