An automated recirculating plant growing mechanism, in one embodiment it is disclosed as having: a hermetically sealed frame； at least one conveying tray operable to constrain, maintain the temperature of, and vary the offset distance between rooting medias； a drive mechanism operable to recirculate at least one conveying tray or at least one light bar cleaning assembly around a prescribed conveying path； at least one air lock mechanism operable to seal and unseal the recirculating plant growing mechanism, and operable to remove from and install onto the conveying drive mechanism a conveying tray； at least one light emitting bar operable to emit light and be positioned around a crops canopy； and at least one watering station operable to sense root zone conditions and inject nutrients into rooting media.
