LED technology has only been available on a commercial level in the horticultural industry for around three years. So realistically, they would only have had time to trial a limited number of spectrums that may yield good results for one or two strains/cultivars. We simply have not had the technology long enough to perform the testing needed!
There is a big misconception in the industry stemming from the LED suppliers that the ability to have your LED lights so much closer to your crop will help increase production lower into the crop. This could not be further from the truth! When your light source is closer to the top of the canopy than the shadows created from the top layer of leaves are much bigger than if the light was further away. (Use a flashlight and make a shadow on a wall with your hand. Watch how the shadow grows as you get the light closer to your hand). Also, light penetration into the crop comes from the crossover between fixtures.
With all of these factors above, how do we answer our initial questions?? Quite frankly, there is no simple answer! Every grow is different – from different: strains being grown, growing climates by geography, style of growers, indoor versus greenhouse, etc. All of these factors will weigh heavy on what is better for you!
The bottom line that I can share with you, from my perspective where I get visibility to lots of opinions on the topic, see lots of sales and growth cycles, talk to lots of growers, is this: We are still in the investigative and development stage with LED technology in this sector.
When it comes to building an ROI comparing LED versus HPS be careful with results that are supplied by manufacturers of only one type of light source. I have seen manufacturers on both sides of the argument manipulate numbers to favor their specific light source. Below is an outline of things to look out for when receiving an ROI comparing lighting technologies:
Photosynthesis converts light energy into chemical energy, enabling plants to grow big and strong. With the marijuana plant, in particular, cutting-edge grow lights support flower growth and bud production.
Why are grow lights so effective at elevating the harvests of cannabis cultivators? On a basic level, cannabis plants are like any other plants in that they require light energy to carry out photosynthesis.
What are the Best Indoor Grow Lights for Cannabis?
By using the best LED grow lights for marijuana, growers will discover enhanced properties and exceptional quality in their harvests.
Cannabis Grow Lights: Why You Should Use Them
New growers may be asking why they need to spend the money on LED lights for weed and can’t simply use a basic desk lamp to save on initial startup costs.