Blue light – 400 – 500 nm – blue light is one of the two main factors influencing photosynthesis via chlorophyll. The blue light spectrum is largely responsible for improving plant quality – especially in deciduous crops.
Blue light causes a number of positive properties for the plant:
Red light – 630 – 660 nm – is necessary for stem growth and leaf expansion. This wavelength also regulates flowering, dormancy, and seed germination. Red light is very efficient in producing tall and vigorous plants in a short time.