An evaporative cooling unit that sprays a water mist into the air to cool the air by evaporation of the water mist is disguised as to its function and purpose by including the misting nozzles and water supply conduits in a decorative structure, such as an artificial flower arrangement or plant. The misting unit of the invention includes a base and a decorative structure extending from the base. A water conduit extends through the base from a base end with a fitting for attachment to a source of pressurized water such as a garden hose, into the decorative structure where it ends in at least one decorative structure end with a misting nozzle thereon. The base may take the form of a flower pot with the decorative structure taking the form of flowers or a plant extending from the flower pot.