Of course they do have other plants than cacti down in Arizona. These tangerines look like they are just about ripe, helped by the 3rd quarter moon (picture taken a few days prior to our Valentine's Day shot...).
I'd forgotten how to tell a waxing from a waning moon. Hold your hands up in in "C" shapes. If it looks like the left hand, it is waning, if it looks like the right then it is waxing.