« Back to Glossary Index

What are UVB Rays?

  UVB rays refer to radiation with a wavelength of 290-320 nm. UVB light falls outside the visible light spectrum.  

Are UVB Rays Dangerous?

  This is an interesting question, as UVB rays can cause damage to both plants and humans, but it’s this potential for damage that makes them a favorable aspect of indoor cultivation. You see, plants respond to the threat of UVB rays by producing more trichomes and secreting more resin. In the simplest terms, this is their “sunscreen.” This response to UVB rays ultimately enhances the flavor profile of the finished product. However, it is important that growers wear protective gear when interacting with UVB grow lights.