If you’re as obsessed with house plants as I am, you’ve probably already read somewhere that certain plants don’t require sun. While your plant might not whither and die without sun for a short period of time, all plants require some degree of sunlight to grow. That’s because plants depend on the energy produced from sunlight (or artificial light) to photosynthesize. In short, photosynthesis is the complex process of converting that solar energy into a form of energy that can be stored for future use (glucose). If a plant doesn’t get enough of this solar energy, the photosynthesis process will slow down, as will the growth and development of the plant.