 Cannabis has one of the highest light requirements of cultivated plants, requiring a DLI of up to 40 mol m−2d−1.Light quality refers to the spectral distribution of light given to a plant.Light quality is grouped into colors based on wavelength; 320-400 nanometers (nm) is UVA, 400-500 nm is blue, 500-600 nm is green, 600-700 nm is red, and 700-750 nm is far red, sometimes referred to as near-infrared.