Better Homes and Gardens (Australia)
HOW GROW LIGHTS WORK
Grow lights mimic sunlight by emitting the full colour spectrum not included in normal lighting – including red and blue. This promotes photosynthesis, which is how plants turn light into the energy they need to grow. You can get them as strips with a sticky back or as a standard lamp, as fluorescent tubes or halogen or LED bulbs, and as battery or electric powered.