Today’s LED models are much better for growing plants than the ones available even a few years ago. Many modern lamps are full spectrum (instead of purely red and blue light diodes, which product a bluish purple light and are sometimes called “blurples”).
Full spectrum light is easier on the eyes and adding at least some amount of green light to blurples typically results in healthier growth. LED manufacturers have developed specialized lenses to point light directly to the plants and increase penetration, resulting in bigger yields for the same amount of light compared to older models. There are also many different form factors, with everything from the casing to the size of the diodes varying from model to model.
