Abstract: A watering gutter for use in a flood irrigation system is an elongate channel with spaced side walls and two container supporting surfaces running along the bag. The container supporting surfaces are separated by a drainage trough. Two additional drainage troughs are located between the side walls and the container supporting surfaces. In use, the gutters are arranged side by side, but spaced apart to provide adequate air movement around the plants. The troughs in the base of each gutter ensure uniform water distribution to plants and full drainage of the water away from the plant containers.