Apollo, I figured they're just plants after all, and plants to grow here if watered well enough despite the heat. At $4.50-$5 per rhizome (from freshops.com), I can't imagine why you wouldn't attempt it. I'm sure there's still plenty of time to get them in the ground. Give it a shot!
Also, if you're not a member of the Tucson Homebrew Club, you should def. check it out. Lots of fun, great brewers, great people. Checkout tucsonhomebrewclub.com for more info.