Greenhouse tomato production has increased in recent years, responding to consumer demand for year-round fresh produce and advances in greenhouse vegetable production practices. However, of all the greenhouse crops, tomatoes (Lycopersicon esculentum) are the most complicated to grow because they require the most management, the most labor, and the most light. A grower must be committed to meeting the daily demands of production to be successful. Prospective growers need to get as much information as they can about all aspects of greenhouse production before beginning this enterprise.