For bulbs with the whitest light, the GE BR30 produces the whitest light which contains almost all wavelengths and full light spectrum produced by natural sunlight. Not only does it produce the whitest light, but it also provides high-quality light for your plants, allowing them to flourish all year long. It doesn't give off too much heat or mess up the temperature in the grow room, making it the best bulb for growing plants indoors. The temperature it provides integrates perfectly with any decorative aesthetic in the room.