Under Canopy Lighting
Low-profile LED strips that mount beneath the canopy to recover 15–30% of yield lost to shading — turning lower-branch larf into marketable flower.
15–30%
Yield Recovery
300–450
μmol/m²/s at Lower Canopy
8:1 → 3:1
Top:Bottom Uniformity
~50W
Per Linear Foot
What Is Under Canopy Lighting & Why Use It?
Under canopy lighting places low-profile LED strips beneath the upper leaf mass, directing light upward into the middle and lower canopy zones that top lighting cannot reach.
The problem it solves is simple physics: dense cannabis canopies attenuate light exponentially. At 24 inches below the top cola, PPFD often reads 100–200 μmol/m²/s — below the compensation point where lower leaves stop being net contributors and start consuming energy.
The result: lower buds that would have been larf and smalls develop into harvestable flower.
Typical PPFD gradient in a flowering room:
| Top canopy (0") | 800–1,200 μmol/m²/s |
| Mid canopy (12") | 300–500 μmol/m²/s |
| Lower canopy (24") — no under canopy | 100–200 μmol/m²/s |
| Lower canopy (24") — with under canopy | 300–450 μmol/m²/s |
Does Under Canopy Lighting Pay for Itself?
15–30%
Increase in harvestable weight from lower branches. The gain is almost entirely in what would have been larf or biomass-grade material.
8:1 → 3:1
Top-to-bottom light uniformity ratio improves dramatically. More uniform light means more uniform bud development and less trimming labor.
1–2 Cycles
Typical payback period on under canopy strips. After that, the additional yield is pure margin — the per-gram cost is significantly lower than adding more top fixtures.
How to Choose an Under Canopy Light
Five specs that separate a production-grade fixture from a hobbyist strip.
PPE ≥ 2.5 μmol/J
Under canopy lights run the same photoperiod as your top lights. Low efficiency turns into significant operating cost across 20–30 fixtures. Look for 2.5 μmol/J or higher at the system level.
Low Profile — Under 20 mm Effective Thickness
The fixture must fit under a dense canopy without blocking airflow or crowding branches. Strip form factors are standard for a reason — they mount along trellis lines and produce even light distribution along the row.
Deep Red (660nm) + Far-Red (730nm) Spectrum
White light alone can't penetrate lower canopy effectively. Deep red drives photosynthesis in shaded tissue. Far-red supports flowering initiation through the phytochrome response. If a fixture offers only white light, it's not optimized for lower canopy work.
IP65+ Environmental Rating
Under canopy fixtures sit in the most humid part of the grow room — directly under transpiring leaves. IP65 is the minimum for long-term reliability in that environment. Sealed connectors are a must.
Daisy-Chainable with Remotely Mountable Driver
8–12 fixtures per driver run saves installation labor. A driver mounted outside the canopy zone means you don't have to reach through the crop to replace it. 0–10V dimming compatibility is standard for commercial integration.
Explore Our Products
Technical Specifications
| Model Number | 120W Under Canopy Lights |
| Power | 120W ±5% |
| Input Voltage | 100–277VAC / 277–480V AC 50/60Hz |
| LED Driver | Inventronics / Sosen / Fahold / Juson |
| PPF (380–780nm) | 342 μmol/s |
| PPE | 2.85 μmol/J |
| Color | 6500K + 660nm + 730nm |
| Coverage | 4 * 1.5 ft |
| Lifespan | L90: >50,000小时 |
| Input Voltage AC | 120V / 220V / 240V / 277V |
| Input Current at 100% | 1A / 0.54A / 0.5A / 0.43A |
Our Certifications
OEM/ODM Customization & Wholesale
What PPFD does the lower canopy actually need?
Target 300–400 μmol/m²/s at the lowest productive buds. Below 100 μmol/m²/s, leaves stop being net contributors. Two of our 120W strips per 4×4 tier deliver 300–450 μmol/m²/s — enough to convert unproductive buds into marketable flower.
Can I customize the spectrum for my crop?
Yes — white/red/far-red ratios can be tuned for your specific crop type and growth stage. Our R&D team works with you to dial in the spectrum before production.
What are the MOQ and lead time?
For existing models with logo/packaging customization: MOQ 100–500 pcs, lead time 3–4 weeks. For ODM projects with new tooling: by scope, typically 6–8 weeks.
How are dimming and scheduling controlled?
Under Canopy Lights do not include built-in timers or onboard dimming controls. For commercial greenhouse and indoor farming applications, lighting schedules and intensity are managed through external controllers, enabling synchronized dimming, scheduling, and group control of multiple fixtures.
What certifications does this product carry?
CE, RoHS, FCC, and UL. Additional certifications for your target market can be arranged — discuss with our sales team.
Should I use under canopy lighting instead of more powerful top lights?
Not instead — in addition. More powerful top lights don’t solve the penetration problem. Research shows cannabis yield responds to total PPFD from both above and below. The best results come from using both at full intensity.