The first documented use of light-emitting diodes (LEDs) for plant growth goes back to 1988 when NASA explored its potential application of LEDs for its project investigating space-based plant growth systems. However, it was not until 2000 that LEDs were first commercially used for plant production in Japan. In less than two decades, LED lights targeted at horticultural applications became a burgeoning marketplace worth around $395 million.
As researchers continue to establish new findings around lights of specific wavelengths and their impace on different plants and stages of growth, broad-spectrum sources such as HPS lamps - that were popularly used in greenhouses - are being outperformed by LED grow lights. This white paper explores the current state of the LED grow lights marketplace and provides an overview of some of the most promising new LED products for horticulture brought to the market by three major lighting product designers.