forcing

The term "forcing" in agriculture refers to the practice of growing plants in a greenhouse or "forcing house" to accelerate their growth or enable them to produce crops out of their natural season. These structures allow for controlled interior temperatures and humidity, independent of the outside climate.12

Greenhouses vary in size from small hobby structures to large commercial operations. A simpler form, the "hotbed," uses fermenting organic matter to generate heat for starting plants early in the spring. Maintaining optimal temperatures, which can range from 40°F (4°C) for lettuce to 70°F (21°C) for tomatoes, is crucial and often managed with heating systems and thermostats.2

Beyond temperature control, commercial greenhouse operators manage ventilation, sunlight, soil moisture, fertilization, and pollination to ensure a steady supply of produce. This controlled environment is essential for vegetable farming, where factors like seed quality and the adoption of techniques for a consistent flow of desired produce are key to profitability.23