Abstract: A heat distribution system to supply heated water in close proximity to foliage to be protected from the effects of low temperatures wherein heat from the water is conducted through conduits to the ground and to spray a fine warm mist of water near the foliage so as to raise the air temperature in the vicinity thereof to protect the foliage from frost damage. The heat distribution system comprises a water supply, an auxiliary heater, and a network of conduits having an inlet and an outlet header. The network of conduits comprises a plurality of primary conduits and a plurality of auxiliary conduits having nozzles disposed above the surface of the ground. The plurality of conduits includes a plurality of substantially parallel legs to more efficiently conduct the heat to the ground evenly along the area to be protected.