Choosing the right outdoor grow lights for greenhouses can significantly impact plant health and yield. The best overall pick is the VIVOSUN Outdoor LED Grow Lights, known for its durability and full-spectrum coverage. The Owleye 12FT LED String stands out for its extensive length and high light output, making it ideal for larger setups. However, buyers face tradeoffs between brightness, waterproofing, and ease of installation. Continue reading for a detailed breakdown of the top options and what makes each unique.
Complete the kit
Key Takeaways
- Durability and waterproofing are essential for outdoor use, with IP65 ratings being a standard benchmark.
- Longer cords and linkable features offer greater flexibility for larger greenhouses or garden setups.
- Full spectrum lighting provides the most natural growth conditions, but not all products deliver consistent light quality.
- Ease of installation and smart features vary widely, impacting setup time and convenience.
- Higher price tags generally correlate with more advanced features and better build quality, but some budget options still perform adequately.
| outdoor grow lights for greenhouse | Waterproof Rating |
|---|---|
| SANSI Hanging Grow Light Strin | IP65 |
| Owleye 12FT Outdoor Grow Light | IP65 |
| Outdoor LED Grow Lights | — |
| Outdoor Waterproof Full Spectr | IP44 |
| VIVOSUN Outdoor LED Grow Light | IP44 |
| Outdoor Grow Lights for Greenh | IP65 |
| Outdoor LED Grow Lights for Gr | IP44 |
| Outdoor LED Grow Lights | — |
| Outdoor LED Grow Light | — |
| Outdoor Grow Light | — |
More Details on Our Top Picks
SANSI Hanging Grow Light String for Indoor and Outdoor Plants, 6 LED Bulbs, 72W, Waterproof, Full Spectrum with Red Light for Greenhouse and Garden
This upgraded SANSI grow light string stands out for combining full spectrum lighting with red supplement LEDs, making it a strong choice for both greenhouse and outdoor garden setups. Its waterproof IP65 rating and ceramic technology deliver durability and efficiency, comparable to the Owleye 12FT string but with a more compact six-bulb design that fits smaller or more targeted planting areas. While it offers excellent light quality and ease of installation, it’s not designed for heavy rain or extreme weather conditions, requiring careful placement and secure mounting. Its high lifespan and waterproof features provide long-term value, but the need for secure bulb attachment can be a minor hassle in windy environments.
Pros:- Waterproof IP65 rating suitable for outdoor use
- Full spectrum light with red supplement for optimal plant growth
- Easy to install with adjustable hooks
- Advanced ceramic technology for higher efficiency and longer lifespan
Cons:- Not recommended for use in heavy rain or typhoons
- Bulbs must be tightly secured to prevent exposure of bases
Best for: Gardeners seeking a reliable, full-spectrum outdoor grow light with waterproof durability for versatile applications
Not ideal for: Locations prone to severe weather or heavy storms where a more robust, weatherproof system is necessary
- Wattage:72W
- Number of Bulbs:6
- Waterproof Rating:IP65
- Full Spectrum Range:400nm-780nm
- Red Light Wavelength:660nm
- Lifespan:25,000 hours
Our verdict“This pick is ideal for gardeners needing a durable, versatile outdoor grow light with strong spectrum coverage and straightforward installation.”
Owleye 12FT Outdoor Grow Lights LED String Plant Light, IP65 Waterproof, Full Spectrum, 120V, ETL Listed, 33.89 umol/s, Linkable Grow Light for Greenhouse & Outdoor Garden & Raised Bed (3-Bulbs)
The Owleye 12FT string is designed for gardeners who need a flexible, full-spectrum lighting setup capable of covering larger areas. Its three-bulb configuration, combined with linkability up to ten sets, makes it ideal for expansive greenhouses or outdoor gardens. Compared to the shorter, more contained SANSI string, this model offers greater coverage, though it requires multiple units for very large spaces, which can increase complexity and cost. The full spectrum with red, blue, and green LEDs supports vigorous plant growth, but the pink tint may be less natural for visual plant monitoring. Its waterproof IP65 rating ensures durability, but users should be aware that connecting multiple units demands careful waterproofing and setup.
Pros:- Full spectrum light with red, blue, and green LEDs
- Linkable up to 10 sets for expansive coverage
- Energy-efficient and durable IP65 waterproofing
- Supports vigorous plant growth and faster maturation
Cons:- Limited to 3 bulbs per set, requiring multiple units for larger areas
- Some users may find the pink tint less natural for visual observation
Best for: Large-scale growers or gardeners wanting customizable, expandable lighting for extensive outdoor or greenhouse areas
Not ideal for: Small or beginner gardeners who prefer simple, plug-and-play solutions without multiple connections
- Power:31 watts
- PPF:33.89 umol/s
- Voltage:120V
- Waterproof Rating:IP65
- Linkable Sets:Up to 10
- Number of Bulbs:3
Our verdict“This product is best suited for large gardens needing scalable, full-spectrum lighting with expandability options.”
Outdoor LED Grow Lights, Waterproof String Grow Light, Full Spectrum Plant Growing Lights with 12Ft Adjustable Cord (3 Lights)
This set of waterproof LED grow lights offers a straightforward, full-spectrum lighting solution with a 12-foot adjustable cord, making it suitable for diverse outdoor or indoor applications. It’s a good choice for those who value flexibility, especially compared to more complex systems like the VIVOSUN string, which boasts higher lumen output. These lights provide a decent lumen output at 19,500 lumens, supporting seedlings and vegetables effectively, but their simple touch control and lack of smart features mean less convenience for tech-savvy growers. Installation requires care to maintain waterproofing, and the limited control options might not satisfy growers seeking automation or remote scheduling.
Pros:- Waterproof and durable for outdoor environments
- Full spectrum lighting promotes healthy plant growth
- Energy-efficient with high lumen output
- Adjustable 12-foot cord for flexible positioning
Cons:- Requires secure installation to ensure waterproofing
- Limited control options (touch only)
Best for: Beginner or budget-conscious gardeners seeking flexible, durable, full-spectrum outdoor lighting
Not ideal for: Advanced growers looking for smart controls or high lumen output for commercial-scale setups
- Water Resistance Level:Water Resistant
- Light Source:LED
- Number of Light Sources:3
- Voltage:110 Volts
- Brightness:19500 lumens
- Control Method:Touch
Our verdict“This is a solid, affordable choice for gardeners needing flexible outdoor lighting without advanced features.”
Outdoor Waterproof Full Spectrum String Grow Light with Smart Plug, 6 Lights, 22FT Cord
This string of six LED grow lights combines full spectrum illumination with the convenience of a smart plug, making it appealing for growers who want remote control and scheduling. Its IP44 rating offers basic waterproofing, but the smart plug itself is not waterproof, requiring extra waterproofing measures if used outdoors. The long 22-foot cord provides flexibility, but the system’s limited to six lights at 110V, which could be restrictive for larger setups. Compared to the VIVOSUN string, it offers smart features, but at the expense of some waterproofing robustness. It’s a practical choice for growers who prefer automation and remote management over raw power or extensive coverage.
Pros:- Full spectrum lighting supports all plant growth stages
- Smart plug for remote control and scheduling
- Expandable with additional chains
- Reasonably long cord for flexible placement
Cons:- Smart plug is not waterproof, requiring additional waterproofing
- Limited to 6 lights per chain at 110V
Best for: Tech-savvy growers who value remote control, scheduling, and energy monitoring for outdoor or greenhouse setups
Not ideal for: Growers seeking a fully waterproof, heavy-duty system for extreme weather conditions or large-scale installations
- Number of Lights:6
- Light String Length:22 ft
- LED Chips per Bulb:40
- Total Lumens:19,500
- Power Consumption:90W
- Waterproof Rating:IP44
Our verdict“Ideal for growers wanting automation and remote control, provided they can handle the waterproofing setup.”
VIVOSUN Outdoor LED Grow Lights, Waterproof Full Spectrum String Grow Light with 44Ft Adjustable Cord (12 Lights)
The VIVOSUN string is designed for serious outdoor growers who need extensive coverage and maximum flexibility. Its 44-foot cord and 12 lights with full spectrum LEDs—including red, white, and warm options—support all growth stages from seedling to flowering. Compared with smaller or less adjustable setups, this model offers high luminous flux (39,000lm) and a durable waterproof build, making it well-suited for large greenhouses and outdoor gardens. However, its high power consumption and complex installation can be drawbacks for hobbyists or those with limited technical skills. For large-scale applications, this system delivers ample coverage and robust build quality, but it requires careful securing and setup.
Pros:- Full spectrum LEDs supporting all plant stages
- High luminous flux for maximum plant growth
- Flexible 44-foot cord and 12 lights for wide coverage
- Waterproof and durable for outdoor environments
Cons:- High power consumption may increase operational costs
- Complex installation requiring secure setup and waterproofing
Best for: Large-scale outdoor or greenhouse growers aiming for maximum coverage and high yields
Not ideal for: Small gardens or casual growers who do not need extensive lighting or are concerned about energy costs
- Waterproof Rating:IP44
- LED Chips:48 per bulb (24 warm, 18 white, 6 red)
- Total LEDs:576
- Luminous Flux:39000lm
- Power Consumption:180W
- Cord Length:44Ft
- Adjustability:Yes
Our verdict“This system is best suited for large, high-yield operations where coverage and durability are paramount, despite higher energy needs.”
Outdoor Grow Lights for Greenhouse, Full Spectrum Waterproof String Grow Light, 21.3FT
This string grow light offers a full spectrum from 380nm to 780nm, making it suitable for all plant stages. Compared to the simpler models, its UL certification and waterproof IP65 rating bring peace of mind for outdoor use. Its ability to connect end-to-end creates flexible layouts, but setup can be complex for newcomers, and it’s best placed 30-50 inches above plants to optimize light distribution. It stands out for safety and durability, though the installation process might be daunting.
Pros:- Full-spectrum lighting supports all plant growth stages
- Waterproof and durable with IP65 rating for outdoor use
- Connectable end-to-end for scalable setups
- UL certified for safety
Cons:- Requires placement 30-50 inches above plants for best results
- Setup can be complex for those new to electrical wiring
Best for: Advanced greenhouse growers needing customizable, safe lighting setups for large outdoor gardens
Not ideal for: Beginners seeking a plug-and-play solution due to the complex setup and placement requirements
- Length:21.3 feet
- Spectrum:380nm-780nm
- LED Chips:48 per bulb, 288 total
- Luminous Flux:15000 Lumens
- Power Factor:95%
- Waterproof Rating:IP65
Our verdict“This pick makes the most sense for experienced growers who prioritize safety, flexibility, and high efficiency in outdoor greenhouse environments.”
Outdoor LED Grow Lights for Greenhouse, 6-Light Waterproof Full Spectrum Plant Grow Light Lamp
This 6-light setup delivers a full spectrum from 380nm to 780nm, ideal for supporting plants from seedling to harvest. Compared with the longer string options, its more compact form makes it easier to install and manage, though it requires careful protection of unused sockets and precise height adjustment. Its energy efficiency and high luminous output make it attractive for gardeners with medium-sized setups, but limited scalability and lack of smart features could be drawbacks for larger or tech-savvy growers.
Pros:- Full spectrum promotes all plant growth stages
- Waterproof and durable for outdoor conditions
- Connectable end-to-end for expanding coverage
- Energy-efficient with high luminous output
Cons:- Requires careful socket protection outdoors
- Installation height may need fine-tuning for optimal results
Best for: Gardeners managing medium-sized outdoor spaces seeking reliable, easy-to-install lighting
Not ideal for: Large-scale operations needing extensive coverage or those wanting smart control integration
- Waterproof Rating:IP44
- Number of Lights:6
- Spectrum Range:380nm-780nm
- Luminous Efficiency:130 Lumens per LED
- PPF:27.849 umol/s
- Recommended Installation Height:30-50 inches
Our verdict“This model suits growers with moderate garden sizes who want a straightforward, reliable full-spectrum solution without excess complexity.”
Outdoor LED Grow Lights, Waterproof String Grow Light, Full Spectrum Plant Growing Lights with 22Ft Cord, 6 Lights for Outdoor, Greenhouse
This string features 6 waterproof LED bulbs, collectively providing 19,500 lumens over 22 feet, making it ideal for expansive greenhouses or garden beds. Its daisy-chain design allows for scalable lighting arrangements, but the need for multiple units and the absence of smart features limit its convenience for tech-integrated setups. Its IP65 rating ensures weather resistance, but high power consumption and limited indoor versatility are tradeoffs.
Pros:- Waterproof and weather-resistant for outdoor durability
- Full spectrum LEDs support all growth stages
- Daisy-chain design enables scalable setups
- UL-certified safety
Cons:- Requires multiple units for large areas
- Limited to outdoor use only
- No smart control options
Best for: Large outdoor growers seeking high-output, scalable lighting solutions for extensive planting areas
Not ideal for: Smaller or indoor gardens that don’t require extensive coverage or where smart home integration is desired
- Water Resistance Level:IP65
- Number of Light Sources:240
- Voltage:120 Volts
- Wattage:90 watts
- Lumens:19500 Lumens
- Control Method:Push Button
Our verdict“This is best for large-scale outdoor operations that need high lumen output and straightforward scalability without smart features.”
Outdoor LED Grow Light, Waterproof String Plant Growing Light, 21 FT Full Spectrum Growth Light (6 Lights)
This 21-foot string with 6 waterproof bulbs delivers a broad spectrum to support healthy plant growth in various outdoor and indoor settings. Its energy-efficient LEDs with over 50,000 hours lifespan make it a cost-effective choice, and the included switch simplifies operation. However, the socket isn’t waterproof unless bulbs are fully screwed in, and the total wattage of 150W may not cover very large grow areas. Compared to larger, more powerful options, it offers simplicity but less coverage for extensive setups.
Pros:- Suitable for both indoor and outdoor environments
- Weatherproof and durable with long lifespan
- Includes cables and waterproof switch for easy setup
- Energy-efficient LED technology
Cons:- Socket not waterproof unless fully screwed in
- Limited to 150W total wattage, less suitable for large areas
Best for: Home gardeners or small-scale farmers needing flexible lighting for both indoor and outdoor use
Not ideal for: Large commercial operations requiring high wattage and extensive coverage
- Light Source Type:LED
- Power Source:Corded Electric
- Voltage:120 Volts
- Maximum Compatible Light Source Wattage:1500 Watts
- Light Source Wattage:150 Watts
- Wattage:150 watts
Our verdict“This product fits small-scale growers looking for versatile, reliable lighting that can adapt between indoor and outdoor uses without high power demands.”
Outdoor Grow Light, 21.3FT Full Spectrum Waterproof LED String Grow Lights for Greenhouse Garden
This UL-certified string offers full spectrum LEDs with an impressive luminous flux of 15,000 lumens over 21.3 feet, with adjustable length and end-to-end connectability for tailored greenhouse layouts. Its high power consumption (~15,789W) warrants robust electrical setup, and placement at 30-50 inches is recommended for optimal light spread. Compared to less customizable options, its safety certifications and flexibility stand out, but the energy use and socket waterproofing limitations are considerations for budget-conscious or minimalist growers.
Pros:- UL certified for safety and reliability
- Full spectrum for all growth stages
- Waterproof and suitable for outdoor use
- Connectable end-to-end for flexible coverage
Cons:- High power consumption requires strong electrical infrastructure
- Placement requires adjustment at 30-50 inches for best results
- Bulb sockets are not waterproof unless fully screwed in
Best for: Experienced growers needing a customizable, high-output lighting system for large greenhouses
Not ideal for: Beginners or small-scale gardeners who prefer simpler plug-and-play solutions
- Length:21.3 feet
- Power:15,789.47 watts
- Luminous Flux:15,000 Lumens
- LED Chips:288 chips (24x 3000K, 18x 5000K, 6x 660nm red)
- Water Resistance:IP44
- Control Method:Push Button
Our verdict“This option is ideal for experienced growers seeking a scalable, high-capacity greenhouse lighting system with safety assurances.”
How We Picked
To evaluate these outdoor grow lights for greenhouses, I focused on key factors like durability, waterproofing, light spectrum coverage, cord length, and ease of installation. Performance in real outdoor conditions was prioritized, ensuring each product could withstand weather exposure without failure. I also considered user-friendly features like smart plugs and linkability, which add convenience. The ranking reflects a balance between value and advanced features, highlighting options suitable for both casual gardeners and serious growers.| outdoor grow lights for greenhouse | Waterproof Rating |
|---|---|
| SANSI Hanging Grow Light Strin | IP65 |
| Owleye 12FT Outdoor Grow Light | IP65 |
| Outdoor LED Grow Lights | — |
| Outdoor Waterproof Full Spectr | IP44 |
| VIVOSUN Outdoor LED Grow Light | IP44 |
| Outdoor Grow Lights for Greenh | IP65 |
| Outdoor LED Grow Lights for Gr | IP44 |
| Outdoor LED Grow Lights | — |
| Outdoor LED Grow Light | — |
| Outdoor Grow Light | — |
Factors to Consider When Choosing Outdoor Grow Lights For Greenhouses
Selecting the right outdoor grow light involves understanding several critical factors that influence plant health and setup convenience. Beyond basic features, it’s important to consider how the light performs under outdoor conditions, its adaptability to your greenhouse size, and the longevity of its components. Making the right choice depends on matching product features with your specific gardening needs and budget, avoiding common pitfalls like underestimating power or waterproof ratings.Light Spectrum and Intensity
Full spectrum lighting closely mimics natural sunlight, supporting all growth stages of plants. When choosing, look for products that specify their spectrum coverage for maximum effectiveness. Consider the light intensity measured in umol/s or PPFD; higher values support faster growth, especially in larger greenhouses. However, excessive brightness can lead to energy waste or plant stress, so match light output to your crop requirements.
Waterproofing and Weather Resistance
Since these lights are intended for outdoor use, waterproof ratings such as IP65 or higher are essential. Lower ratings may lead to damage or failure when exposed to rain or humidity. It’s also worth checking if the product has a sealed, corrosion-resistant housing, especially for prolonged outdoor use. Investing in a well-sealed unit reduces replacement costs and ensures consistent performance over time.
Cord Length and Expandability
Longer cords and linkable features increase flexibility, allowing you to cover larger greenhouse areas without complicated wiring. When choosing, consider your setup size and whether you might want to add more lights later. Be cautious of overly short cords that may require extension cords, which can introduce safety hazards or reduce waterproof integrity if not properly rated.
Ease of Installation and Smart Features
Features like adjustable hooks, quick-connect links, and smart plugs simplify installation and management. While smart features can automate lighting schedules, they often come with higher costs or compatibility issues. Decide if these extras justify the price or if a straightforward, manual setup better suits your skills and budget.
Energy Efficiency and Cost
LED technology is inherently energy-efficient, but wattage and operating costs vary. Higher initial investment may be justified by lower electric bills over time and longer lifespan. Keep in mind that cheaper models may save money upfront but could require more frequent replacement or lack durability, especially in harsh weather conditions.
Frequently Asked Questions
How do I ensure my outdoor grow lights will withstand weather conditions?
To ensure durability, select lights with an IP65 rating or higher, indicating good resistance to rain, dust, and humidity. Look for sealed, corrosion-resistant housings and check manufacturer claims about weatherproofing. Proper installation, such as mounting in sheltered locations or using protective covers, can also extend the lifespan of your lights. Regular maintenance and inspections help catch potential issues before they result in failure.
Can I use indoor grow lights outside in my greenhouse?
While some indoor grow lights may work outdoors, most are not built to withstand weather exposure, risking damage or reduced lifespan. Outdoor-specific models are designed with waterproofing and weather-resistant materials, making them more reliable for greenhouse use. For best results, choose lights explicitly rated for outdoor or waterproof use, ensuring consistent performance and safety.
What’s the ideal cord length for my greenhouse setup?
The ideal cord length depends on your greenhouse size and layout. For small setups, 10-15 feet may suffice, but larger greenhouses benefit from 20-30 foot cords or linkable designs to avoid multiple extension cords. Always prioritize waterproof connectors and proper cable management to prevent damage and maintain safety. Planning ahead prevents the need for costly adjustments later.
Are smart grow lights worth the extra cost?
Smart grow lights offer automation, scheduling, and remote control, which can save time and optimize plant growth. However, they often come at a premium and may require compatible apps or hubs. If you manage multiple greenhouses or want precise control over lighting cycles, investing in smart features can be worthwhile. For casual gardeners, manual controls may be sufficient and more budget-friendly.
How do I choose the right light spectrum for my plants?
Most outdoor grow lights use full spectrum LEDs, which support all growth stages. If you grow specific crops, consider lights that emphasize red or blue wavelengths, which promote flowering or vegetative growth, respectively. For general use, full spectrum lighting offers a balanced approach, ensuring plants receive the light they need without additional adjustments. Matching spectrum to your plant type enhances growth efficiency.
Conclusion
If you’re a casual gardener or hobbyist, a budget-friendly, waterproof string light like the Outdoor Grow Lights with 21.3FT coverage offers reliable performance without complexity. For serious growers or larger greenhouses, the VIVOSUN Outdoor LED Grow Lights provides a durable, full-spectrum solution with smart features for precise control. Beginners should prioritize ease of installation and waterproofing, while experienced growers might opt for expandability and higher PPFD ratings. Ultimately, matching features to your setup and plant needs ensures healthy growth and a satisfying gardening experience.
