The pot has a container for the substrate of the plant, a container for a water reserve, and means for bringing water from the water reserve to the substrate. It comprises: an external container (300) closed in lower part and open in upper part； an internal container (100, 200) defining a cavity (C1) for the substrate, the external container and the internal container defining between each other a cavity (C4) for a water reserve and being able to be fitted into each other and disconnected from each other； a pumping means (P) fastened to the internal container with an inlet exposed to the water reserve, and connected to a pumping control circuit (CC)； and means (500, 501, 502) for fluidic connection between an outlet of the pumping means and at least one irrigation orifice (127) located in upper part of the internal container. The irrigation is performed by the top, and the pot is easy to maintain and clean.
