Chuck: Thanks for the response. Our season should be fine through October for tomatoes. I have even had cherry tomatoes ready for picking at Christmas...but not many. I don't know what "zone" we are in but it is a temperate zone. (Santa Cruz Mtns No. Calif. - 1200 ft elevation) Freezes don't occur until Jan. or Feb. Amazon.Com indicates publisher is out of book by Dr. Male. Regards, Gene