Mammoth Lighting 430W 4 Bar Fold Veg LED Grow Light
If there is one truism that experienced Growers know - it is Metal Halide (MH) for Veg, with a rich blue waveband..... and HPS for flower with a rich red waveband.
It’s important to give your plants the blue light they need — especially in veg. With blue light — either from LED or MH lights — plants show robust lateral growth without extension. What’s more, plants grown with a spectrum that’s rich in blue have thicker, darker leaves than those grown without blue light, and that prepares them for a robust flowering period.
But why does blue light matter in the vegetative phase? And why does the reddish HPS spectrum work better for flowering? The answer comes from the natural seasons.
During the peak of summer, when plants are in veg, there’s a lot of blue light. As fall rolls around and it becomes time for reproductive growth, the light has less blue light and more red. That’s because the blue light gets filtered out when the Earth tilts away from the sun and the light has to pass through more of the atmosphere. The atmosphere diffracts the blue, so there’s less for plants.