We had our first frost last night. It was not a heavy frost, but the lawn was slightly frosted and the temperature was 37 degrees at 6:30 am. It was severe enough to kill the tomatoes and squash, but nothing else was much affected. Even the basic in front of the house, where it is protected, wasn't nipped. The sun is brilliant today although probably not as hot as the Arizona sun. The frost quickly melted. These petunias…