A self-controlling watering system, comprising a water reservoir having a first end, a second end, and an internal compartment of a predetermined volume, a first cover designed to secured to the first end of the tank, a second cover designed to secured to the second end of the tank, wherein the second cover has a first opening, and a second opening, a pump secured to the first cover within the internal compartment of the water reservoir, compartment designed to securely fit within the first opening of the second cover, wherein a third end of the compartment is open and a fourth end of the compartment is closed, a controller positioned within the compartment and for controlling the pump to initiate watering cycles according to a preselected program regarding the frequency of watering and quantity of water.