The present disclosure relates to an outer pot, configured to accommodate an inner plant pot, where the outer pot comprises: - a bottom； and - at least one side wall extending from the bottom to an opening configured to enable inserting the inner plant pot through the opening； wherein the outer pot is configured for use in an ebb-and-flood grow system, in that: - the bottom and the side wall define there between a fluid reservoir, and - wherein at least one of a dome extending from the bottom and the side wall comprises at least one through hole for fluid supply to or fluid discharge from the outer pot, where the through hole is arranged at a distance from the bottom to define a volume of the reservoir. Further, disclosed are assemblies, ebb-and-flood based watering systems, methods of assembling and growing plants, at least associated with the outer pot.
