Abstract: A system for conveying plant trays in a greenhouse having continuous conveyors, each in the form of a cable having cable ends spliced together and adapted to support and convey in an upright condition plant trays through the greenhouse, the continuous conveyor having an upper plant transport portion and a lower cable return portion. The system has first end and second end pulleys to receive the continuous conveyors and a motor attached to the first end pulleys to drive the continuous conveyors, whereby, the system is capable of transporting the plant trays through the greenhouse on the continuous conveyors from the first end pulleys to the second end pulleys.