One year ago, GeoProducts Corporation (Oakland) began construction of their Honey Lake Farms Project near Wendel, California. Today, thirty units of a planned 205 geothermally heated hydroponic greenhouses are producing European cucumbers and tropic tomatoes. Cucumber production in 20 houses averages approximately 1, 500 pounds per unit per week. Although the tomatoes are still in the primary stage of development, they are expected to produce an average of 850 pounds per unit per week. The purpose of this article is to describe the planned utilization of the geothermal resource in this project, to acquaint the reader with hydroponics in general and to describe the Honey Lake system in particular