LED plant lamp \"Super Grow\" for healthy, fast and efficient growth An optimal light source is crucial for healthy, fast and efficient growth. In the season when daylight is scarce, Bio Green \"Super Grow\" LED growing lamps are perfect for sustainably stimulating the growth of vegetation. The most productive distance between the lamp and the plant is between 0.5 - 1 m (approx. 1.6 - 3.2 ft). The optimal illumination duration, depending on the plant species and the amount of sunlight available, is ideally between 8 and 16 hours.