Full-spectrum grow lights are designed to mimic the sun’s spectrum, from ultraviolet (UV) to visible to infrared light. It’s a term used by manufacturers, but full-spectrum doesn’t tell the whole story about what kind of light a plant actually needs.
For photosynthesis, plants only need light within the 400-700nm PAR (visible) spectrum. Broad-spectrum white lights offer a more realistic representation of the sun’s light, while full-spectrum offers the added boost of infrared light. All in all, maximizing the type of light your harvest receives will greatly impact the quality of your buds, trichomes, and terpene expression.
