I saw a TV show about Herb Gardens yesterday. It was filmed east of Tempe Arizona. The person with the herb garden had every thing your can think of and more. It was a very nice layout too behind the house and around the side. It was all designed as part of the patio area with a rock wall border. They reported that herbs like it hot and dry and that is one reason they do so well in Arizona. That is the first time I have heard herbs like it hot and dry.
I bet their herbs grow year round it is seldom very cold there in the winter. When I lived there we had to scrap frost off of the car windows in the morning and it was 65 to 70 degrees by lunch time.