What Is A Grow Light and How Does It Work
Indoor gardening often hits a wall when natural light is scarce—whether you’re in a small apartment with north-facing windows or growing through cold winter months. The solution? A grow light, a tool designed to mimic the sun’s energy and fuel plant growth year-round. Below, we break down what grow lights are, the different types available, how they stack up against regular bulbs, their science-backed functionality, and practical tips for using them effectively. What Is A Grow Light? A grow light (or plant growth lamp) is an artificial light source engineered to emit wavelengths of light that plants need for photosynthesis—the process where plants convert light energy into chemical energy to fuel growth, flowering, and fruiting. Unlike regular lights, which prioritize human visibility, grow lights focus on delivering photosynthetically active radiation (PAR) —the range of 400 to 700 nanometers (nm) that chlorophyll and other plant pigments absorb most efficiently. Whether you’re ...