A wavelength emitting electronic device for enhancing growth of a plurality of plants includes a supporting frame member, at least one printed circuit board (PCB), and an optically transmittive material. The supporting frame member includes a first surface and a second surface. The PCB includes an array of light sources. The PCB is detachably attached to the second surface of the supporting frame. The array of light sources receives electrical signals from a circuit rectification module power source. Each light source of the array of light sources emits light of predetermined wavelengths. The optically transmittive material is fixedly attached to the supporting frame member for transmitting the light emitted by the array of light sources to the plants for enhancing growth of plants.