Principle of LED grow light It is made according to the principle of sunlight required for plant growth and photosynthesis. Plant photosynthesis mainly absorbs red and blue light. Therefore, LED plant lights are also mainly based on red and blue lamp beads. Plants stunted, withered leaves, and stopped growing in the presence of insufficient light. If the corresponding artificial light supplement measures are not taken, it will directly bring huge economic losses. As a new light source for plant supplement light, LED plant lights can not only supplement light for plants, but also completely replace sunlight to provide plants with the necessary photosynthesis. spectrum.