Abstract: A liquid gauge mechanism of the type primarily designed to be used in containers utilized for maintaining or growing plants therein wherein the casing of the gauge mechanism is at least partially submerged within the root system and surrounding liquid so as to indicate the level of liquid within the container. An indicator element is movably disposed within the hollow container of the gauge mechanism and has indicia formed thereon so as to be viewable through the casing of the indicator means. The level of liquid within the container is the same as the level of liquid within the casing. The indicator element being floatable within the casing serves to position the indicia thereon in aligned relation with a window or viewing portion through the casing so as to indicate the level of the liquid relative to the root system of the plant maintained within the container.