btw while AZ has a few members of the Quercus family, almost none of them grow down here. There are two that are growing ironically enough next to the freeway. They change color every year to a brilliant orange, at least the branches with leaves on them anyways. I believe the are Q. gambelli.
They are common up north where I go camping (or used to anyways, I havent gone in years!
Here's to you, all you insidious creatures of green..er I mean cacti.