The spectrum of LED plant growth lights has an important impact on the growth of cannabis plants. Different spectrums can change the way cannabis germinates, grows and even blooms. Specifically:

‌Red light‌: Red light is one of the light qualities most absorbed by green plants and is essential for the normal growth of plants. Substances generated under red light can make plants grow taller, promote carbohydrate synthesis, and are beneficial to the synthesis of VC and sugar in fruits and vegetables. However, it may still be difficult to use red light alone for cultivation.

‌Blue light‌: Blue light is a necessary supplementary light quality for red light for crop cultivation, and it also plays an important role in the normal growth of plants. Blue light can inhibit stem elongation, promote chlorophyll synthesis, and is beneficial to nitrogen assimilation and protein synthesis. However, excessive blue light may be detrimental to the growth and development of plants.

‌Red-blue light combination‌: The red-blue light combination spectrum can promote the growth and development of plants more than red light or blue light monochromatic light. However, the proportion of red-blue light combination required by different plants may be different.

In addition, the customized spectrum provided by LED plant growth lights can better meet the needs of cannabis plants at specific growth stages, thereby optimizing their growth environment. This lighting system neither generates excessive heat nor requires a cooling system to maintain the temperature of the lamp, which is a great advantage when growing cannabis indoors.

Overall, by precisely controlling the spectrum of LED plant growth lights, growers can provide optimal growing conditions for cannabis plants, thereby achieving better growth results and yields.