Par light, also known as photosynthetically active radiation (PAR) light, is a specific range of light wavelengths between 400 to 700 nanometers (nm) that are crucial for driving photosynthesis in plants. This range includes all colors within the visible spectrum, including green light, which is often reflected by plant leaves, giving them their green appearance. Despite the reflection of green light, research has shown that it plays a significant role in driving photosynthesis and offers additional benefits such as organic pest control.