Abstract: A wireless irrigation clock system that operates through a mesh network is configured to program functions that control one or more irrigation controls across multiple agricultural zones. The functions are transmitted over the mesh network as a command signal to corresponding irrigation controls. The clock can, for example, be programmed to generate command signals that control the timing and amount of water discharged through solenoid valves. Multiple relay signal repeaters transmit the command signal through the mesh network to appropriate irrigation controls. The relay signal repeaters are arranged to overcome long distances and barriers. The command signal can include instructions to program the time and amount of water discharged through a pump or a booster pump; or the open and closed position of a solenoid valve. A switch operatively connects to the clock to receive the valve command signals to control the irrigation controls, in correspondence to the command signals.