A recent discovery by Australian scientists could change the way cannabis is grown indoors. In a study published in Scientific Reports, it was revealed that far-red light—warm, nearly infrared wavelengths typical of sunsets—can significantly boost THC levels in Northern Lights, one of the most iconic indica-dominant strains.
What’s especially notable is that this study used Northern Lights specifically—not just an anonymous hybrid. And the result is impressive: +70% THC with a shortened light cycle.
Why is far-red light important for cannabis cultivation?
Far-red light (700–800 nm) naturally occurs at sunrise and sunset. In nature, plants interpret it as a signal of shade. But in controlled environments, it can enhance photosynthesis through the Emerson effect, especially when balanced with white and red light.
Northern Lights: +70% THC with less energy use
The experiment tested six different lighting setups. The strongest effect was seen in Northern Lights, grown under 10 hours of full-spectrum light plus 2 hours of far-red light (“10L_2D”). This led to a 70% increase in THC yield compared to the standard 12-hour cycle.
At the same time, overall energy consumption was lower. In other words: less light, more result.
Northern Lights by Pyramid Seeds – a legend adapted for the future
At Pyramid Seeds, we’ve worked with classic genetics for years, and Northern Lights is one of our bestsellers. This photoperiod indica is ideal for indoor cultivation, offering strong resistance, a balanced aroma with spicy and cedar notes, and a deeply relaxing effect.
Now, there’s even more to love—excellent compatibility with modern LED systems and a strong response to spectrum optimization. This makes Northern Lights one of the top choices for growers seeking maximum results with minimal input.
Sustainability and savings: key trends in indoor growing
Growing cannabis indoors is expensive: more than 5,000 kWh per kilogram of dried flower, with about 40% of that going to lighting. Reducing the daily light period and adding far-red light can cut energy use by more than 5%.
Modern lighting technology is not just a cost-saving measure—it’s a real tool for increasing crop potency. Especially for premium strains like Northern Lights.
The ideal strain for modern conditions
Although the experiment involved three strains, Northern Lights showed the best response. This highlights its versatility and high efficiency, both under traditional lighting and in precision spectrum setups.
Source: The Cannex
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