What Are The Different Colours of Lights?
Blue and red are the most common colours of light that you will hear indoor gardeners talk about. Each colour is used for a different stage of growth by the plant. Blue light is the colour of light that makes a plant grow. It is perfect for starting seedlings and leafy plants. Later, plants need red light because it makes the plant produce vegetables and flowers. However, too much blue light can cause a plant to become stocky, while too much red light can cause a plant to become tall, thin and spindly. There are three different kinds of grow lights: incandescent, fluorescent and high-intensity discharge (HID) lights. Each type of light produces a different colour from the light spectrum. • Incandescent light bulbs give off mostly red light. • Cool white fluorescent bulbs produces only blue light, while warm white fluorescent bulbs produce mostly red light. Another alternative is to use a full-spectrum fluorescent bulb, which provides both blue and red light. • A metal halide HID bulb g
