Several forum members should be selling seeds of A. reticulata over the next few months since it it starting to be fruiting season. It would be interesting to try them in Palm Springs to see how they fair. Just make sure you have them protected from those 125F temps in the summer and the occasional 25F-27F extremes in the winter. A friend of mine lives in Rancho Mirage and he has tried several fruit trees with many failures. Mango and citrus to well, but completely shut down growth after July, just too hot!