What Is Under-Canopy Lighting and When Should Growers Use It?
Subtitle: Discover how under-canopy LED grow lights can supplement light for lower plant leaves and support commercial greenhouse cultivation.
In commercial greenhouses and indoor growing facilities, dense plant canopies can prevent sufficient light from reaching lower leaves. Although overhead lighting is widely used, some growing systems may benefit from additional light directed toward the lower parts of the plants.
Under-canopy lighting is a supplemental lighting approach designed to address this challenge.
What Is Under-Canopy Lighting?
Under-canopy lighting refers to placing supplemental LED fixtures beneath the plant canopy to deliver additional light to lower leaves and selected areas of the plant.
Unlike traditional top lighting, which directs light downward from above, under-canopy lighting targets areas that may receive less light because of dense foliage. It can be used alongside natural sunlight or overhead grow lights as part of a broader lighting strategy.
The actual results depend on crop type, canopy structure, fixture placement, and the amount of supplemental light provided.
Which Growing Applications Can Benefit from Under-Canopy Lighting?
1. Greenhouse Tomato Production
Tomato plants can develop tall stems and dense foliage during the growing season. Lower leaves may receive less light as the canopy develops.
Under-canopy LED fixtures can provide additional light to selected lower areas of the plants. Commercial growers can evaluate this approach according to plant spacing, canopy density, and existing lighting conditions.
2. Dense Canopy Crops
In growing systems with closely spaced plants or overlapping foliage, some leaves may be shaded by the upper canopy. Supplemental lighting from below can help direct light toward these areas when the crop and growing setup are suitable.
3. Indoor and Controlled-Environment Agriculture
Indoor growing facilities allow growers to plan fixture positions and operating schedules more precisely. Under-canopy lighting can be considered as part of a combined lighting system for crops that develop dense foliage.
What Should Buyers Consider When Choosing Under-Canopy Grow Lights?
Before purchasing under-canopy LED grow lights, buyers should evaluate several important factors:
Fixture length and power: Match the light bar to the crop layout and available installation space.
Light output and distribution: Consider how much light reaches the intended target area.
Water and moisture protection: Select an appropriate IP rating for the actual growing environment.
Installation and connections: Check mounting methods, cable arrangements, voltage compatibility, and electrical safety requirements.
Operating costs: Compare fixture efficiency, daily operating hours, and maintenance needs.
The number of fixtures required depends on the growing area, crop canopy, light output, installation position, and target light levels. A lighting layout should be planned for the specific project rather than based on floor area alone.
LED Under-Canopy Lighting Solutions from Our Factory
As a professional LED grow light manufacturer, we provide supplemental lighting products for commercial growing applications. Our 1.2-meter, 150W under-canopy grow light is one option for projects that require additional lighting beneath the plant canopy.
Product configuration and installation requirements should be evaluated according to the crop, growing structure, and electrical setup.
Looking for under-canopy LED grow lights for your greenhouse or commercial growing project? Contact our factory to discuss your requirements and suitable lighting options.
