The mobile height-sorting system enables plants to be sorted so that they can be processed at different heights as required. The range per sorting can be set using the touch screen. All plants within the set range are then placed on the same buffer conveyor belt. The touch screen displays which speed and the amount that the system is processing. All conveyor belts are frequency controlled, to ensure that the belts start and stop smoothly. The delivery system can be equipped with a wheeled undercarriage so that it can be easily moved.