Light-emitting Diodes (LEDs)

Last Updated: August 13, 2018

Definition - What does Light-emitting Diodes (LEDs) mean?

Light-emitting diodes (LEDs) are a form of grow lights that have become popular for growing cannabis. LED lights have been around for more than 50 years for general use, however, in the last few years, they have become sought after as grow lights.

Previous LED lighting systems only had the red and green light spectrums. The lights did not feature the blue light spectrum required to grow plants.

In 2014, Isamu Akasaki, Hiroshi Amano and Shuji Nakamura were awarded the Nobel Prize in physics for creating LEDs that featured the crucial blue light diode needed to create the all-around efficient light-emitting diodes needed for vegetative growth in grow rooms, greenhouses, and with hydroponic growth methods.

MaximumYield explains Light-emitting Diodes (LEDs)

The light-emitting diodes have proven to be a highly efficient and energy-saving grow light for the cannabis cultivation industry because they remain cool, which helps the grower reduce their need for costly heat removal systems.

LEDs uses approximately 60 to 90 per cent less energy than other grow light options like high-intensity discharge (HID) lights, which include high-pressure sodium and metal halides. Some growers who have switched to LEDs report that their cannabis plants typically produce a greater yield than plants grown using HPS grow lights.

The lifespan of the LED is typically 100,000 hours, which far surpasses the lifespan of other types of grow lights. LEDs remain cool so they can be placed close to the plants, which provide the grower with a greater ability to control the light’s spread.

One last benefit of today's LED grow lights is that their lighting spectrum is customizable. Growers can dial in how strong they want their system to be, based on the growth stage.

One of the main drawbacks to LED grow lights is their initial high cost, which is coming down all the time as more and more manufacturers enter the market and the technology is in such high demand.

This definition was written in the context of Cannabis
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