Abstract: The novel idea of using battery operated water-timer in this invention which is attached at the outlet of the up-side down water bottle (water-reservoir) and regulates the flow of water in a predictable manner. This water reservoir is independent, has no connection with the tap water, needs to be filled manually with water as per the need. As a normal course, the flow of water from an up-side down bottle will freely run down due to gravity but when the water-timer is attached at the outlet of the bottle, the flow of water is regulated. As a result, the desired amount of the water may be supplied to the plant at a desired interval by adjusting the frequency and run-time in the water timer.