Tomato plants continue to grow in Iowa until the first hard fall frost, which is usually some time in the first two weeks in October. The growing season can be extended by covering the tomato plants with old sheets at night to protect from frost damage.
About this Author
Karen Carter has spent the last three years working as a technology specialist in the public school system. This position included hardware/software installation, customer support, and writing training manuals. She also spent four years as a newspaper editor/reporter at the Willapa Harbor Herald.