Does Under Canopy Lighting Actually Benefit Cannabis Growth?


When it comes to cultivating cannabis, growers are always on the lookout for innovative ways to enhance their yields and improve the quality of their plants. One such innovation that has gained popularity in recent years is the use of under canopy lighting. But do these specialized lights actually benefit cannabis growth, or are they just another fad in the world of cultivation? In this article, we will explore the science behind under canopy lighting and their potential advantages for cannabis cultivation.

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Understanding Under Canopy Lighting

1. What Is Under Canopy Lighting?

Under canopy lights, also known as supplemental or intercanopy lighting, are a type of grow light specifically designed to be placed beneath the canopy of cannabis plants. Unlike traditional overhead grow lights, which primarily target the top of the plants, under canopy lighting are strategically positioned to illuminate the lower portions of the plant canopy.

2. How Does Under Canopy Lighting Work?

Under canopy lighting emits a spectrum of light that complements the light spectrum provided by overhead lights. This additional light penetrates deep into the canopy, reaching the leaves and buds that would otherwise receive limited light exposure. This supplemental lighting is intended to address the common issue of light deprivation in the lower parts of the cannabis plants.

Flexstar under canopy lights for cannabis growing

The Potential Benefits of Under Canopy Lighting

1. Increased Yield

One of the most significant potential benefits of using under canopy lighting is an increase in yield. By providing light to the lower parts of the plants, more of the canopy becomes active in photosynthesis, leading to greater bud development and ultimately higher yields.

2. Improved Bud Quality

Under canopy lighting can also contribute to improved bud quality. The additional light exposure can lead to denser and more resinous buds, which are highly sought after by cannabis enthusiasts. This can result in a more potent and visually appealing final product.

3. Better Canopy Coverage

Under canopy lighting helps in achieving better canopy coverage. They ensure that no part of the plant is left in the dark, reducing the risk of underdeveloped or larfy buds. This uniformity in growth can lead to a more consistent and marketable crop.

4. Enhanced Terpene Production

Terpenes are the fragrant molecules accountable for the distinct tastes and scents found in various cannabis strains. Under canopy lights can stimulate terpene production, enhancing the overall sensory experience of the cannabis.

Flexstar Under canopy lights for indoor growing

Considerations When Using Under Canopy Lighting

1. Heat Management

While under canopy lighting offers many advantages, it can also generate heat. Proper heat management is crucial to prevent overheating and stress on the plants. Adequate ventilation and temperature control are essential.

2. Energy Efficiency

Under canopy lighting can increase energy consumption. Growers should consider energy-efficient lighting options and balance the benefits with the associated costs.


In conclusion, under canopy lighting has the potential to significantly benefit cannabis growth. They can lead to increased yields, improved bud quality, better canopy coverage, and enhanced terpene production. However, it’s essential for growers to manage factors like heat and energy consumption effectively. When used strategically and in conjunction with overhead lighting, under canopy lighting can be a valuable tool for cannabis cultivators looking to optimize their harvests.

Flexstar Under canopy lights for indoor cannabis growth


1. Are under canopy lighting suitable for all cannabis strains?

Under canopy lighting can benefit most cannabis strains, but the specific lighting requirements may vary. It’s essential to research and choose the right lighting strategy for your particular strain.

2. Can I use under canopy lighting exclusively, without overhead lighting?

While it is possible to use under canopy lighting exclusively, it is generally recommended to use them in conjunction with overhead lighting for the best results.

3. Are under canopy lighting cost-effective in the long run?

The cost-effectiveness of under canopy lighting depends on various factors, including energy efficiency and the value of the increased yield and quality of your cannabis. Many growers find them to be a worthwhile investment.

4. Does under canopy lighting require special installation?

Installing under canopy lighting may require adjustments to your grow setup, such as lowering hanging lights or using adjustable light fixtures. Consult with a professional if needed.

5. How close should under canopy lighting be to the plants?

The distance between under canopy lights and plants can vary based on the light’s intensity. Follow the manufacturer’s guidelines and monitor plant response to determine the optimal distance.