Abstract: A grow light for providing light to one or more plants in a grow area, includes a first light source and a second light source. A first energy conversion component is disposed over the first light source and a second energy conversion component is disposed over the second light source. A power supply is configured to provide power to the first and the second light sources. A controller is configured to control the power supply to provide power to either the first light source or the second light source at a given time. The first energy conversion component converts light received from the first light source into a light having first spectrum and the second energy conversion component converts light received from the second light source into a light having second spectrum different from the first spectrum.

Abstract: A lighting device that provides visible illumination with enhanced emission in the range 460-520 nm with a M/P ratio of XI, where XI is at least 0.7, a correlated color temperature of 4000-14000 K, and an average color rendering index of at least 70.