Evaporative cooling is a method used to lower temperatures by evaporating water into the air, creating a cooling effect. In horticulture and greenhouse settings, evaporative cooling systems use fans and water to maintain cooler temperatures during hot conditions, helping to protect plants from heat stress. The process is energy-efficient and works best in dry, hot climates where the air can absorb moisture easily. It is commonly used to regulate temperature in greenhouses and other enclosed growing spaces.