In our growing forum, many members have experimented with different grow lights for growing cannabis. Over the last few months, it has become apparent that one of the most popular brands for LED grow lights is an emerging company known as “ViparSpectra.”
3 Main Types of LED Grow Lights
Grow Space: 2.5×2.5’ coverage at 36” (suitable for vegetative stage) and 2×2’ coverage at 28” (suitable for flowering stage)
2.) Traditional Panel
Since growers are getting such great results with these lights, and they come at surprisingly reasonable prices for LED grow lights, I knew I needed to highlight this company as our most recommended LED grow light!
Why Does Cannabis Love Blue Light?
Thanks to advancements in LED technology, modern LED grow lights can create just about any light spectrum. And that has growers asking: what’s the best lighting spectrum for cannabis?
Which Grow Lights Have Blue Light?
Blue Light for Cannabis
Some growers have discovered a strange spectral trick to get higher terpene and cannabinoid levels. It goes against the natural seasonal light shift, but it can increase terpenes by a reported 50%.
During the vegetative growth phase — when plants are establishing the foliage that’ll drive photosynthesis over the course of their life cycles — indoor growers make sure to give their plants lots of blue light. In the past, that meant using metal halide (MH) lamps that were rich in blue wavebands. Now, growers can select an optimized LED spectrum or an LED fixture with tunable wavelengths. Spectrum tunability allows cultivators to increase — or decrease — the amount of blue light they’re providing their plants as the production cycle changes.
How Blue Light Effects Cannabis
Either way, switching back to a bluish, vegetative-phase spectrum increases the quality of many varieties of cannabis. With more terpenes, the crop has a higher market value — and the grower has a higher reputation for producing a high-quality product.
It’s unclear why the change in the spectrum — which would be unnatural outdoors — produces more terpenes. Some growers think that it’s a stress response because blue light has more energy than other wavelengths. Other growers wonder if the plants “think” they’re back in the vegetative phase and they push more growth as a response. It’s as though the blue light sparks growth, except the growth, goes into the buds and overall terpene levels instead of foliage.