Abstract: The present application is directed to a hybrid hydroponic and aeroponic plant cultivation system comprising a main reservoir supplying a nutrient solution to a root mass contained within an interior cavity of a cultivation chamber having a lateral sidewall and a chamber outlet, the lateral sidewall having a top edge and a bottom edge, wherein the chamber outlet is configured to allow drainage of the nutrient solution from the interior cavity of the cultivation chamber. Attached to the chamber outlet is a nutrient solution retention system comprising a drainage conduit, a bypass conduit, and a liquid level switch operatively coupled to the drainage conduit, wherein the liquid level switch is configured to restrict the flow of nutrient solution through the drainage conduit causing the root mass to be submerged in a volume of nutrient solution retained in the cultivation chamber.