This invention relates to a modular integrated system aimed at germinating seeds, cultivating, planting, fertilizing and maintaining plants. It is basically characterized in that it comprises: - a liquid receiver (2) which includes a dosing element (3) comprising two holes, respectively, one for the passage of the air feeding tube (5) to the receiver (2) and another one (6) for the discharge of liquid from the receiver (2) under the action of gravity - a watertight platform (4) for containing liquid and which is supplied by the said liquid receiver wherein the regulation of the water flow from the receiver (2) is dictated by the difference of height between the air feeding tube (5) to the receiver and the tube (6) for the discharge of liquid under the action of gravity, i.e. the water will be discharged from the receiver (2) only and if the water level in the platform (4) is lower than the length of the tube (5) - at least one component (7) for fitting the liquid receiver (2) and/or for fitting at least one plant container - an absorbing cloth at the bottom of the component (4) - drainage means (9) for removing the excess water from the platform (4) and - aerating means (10) for the platform (4) comprised of holes positioned above the water line.