An assembly line grow system for measuring growth of a plant, includes a rail system, carts moving along the rail system and carrying plants, seeds, or both, weight sensors, a proximity sensor, a camera and a master controller. The master controller is communicatively coupled to the carts, the weight sensors, the proximity sensor, and the camera. The master controller is operable to receive information from the weight sensors, the proximity sensor, and the camera, determine a growth state of a selected plant based on the information indicative of weight, color, height, or a combination thereof, and control a dosage supply component to provide a modified dosage based on the growth state.
