Rick, Phoenix has an average of 308 frost free days. We, on the outskirts of town, have a few more freezes. We have already had a few mornings with ice in the birdbaths and my neighbor actually scraped ice from the windshield Thanksgiving morning. The weather has seemed about a month off this year. Cooler sooner. Nevertheless, the kale and Brussels sprouts seem happy! We are fortunate because our raised beds are next to block walls that soak up heat during the day. That helps. Soaks up heat when it is 117degrees too..