An apparatus having an automatically adjustable pot seedling feed rate and a method therefor are provided. In some embodiments, the apparatus comprises a pot seedling scooper, a conveyance unit, a detection sensor, a controller, a seedling sorting unit, side panels, and brackets. The conveyance unit comprises a servomotor, a transmission shaft, a conveyor belt, a tension shaft, and a bearing. The seedling sorting unit comprises a seedling sorting rod, a reset spring, a guide post and a support seat.