by Morgan

July 7, 2022

Best Light For Vegetative Growth
Best Light For Vegetative Growth

The vegetative phase is one of the crucial stages in the life cycle of marijuana plants. At this stage, the plant experiences mass root growth and the development of its structure. This phase also determines the success of the flowering phase.

Grow lights play a major role during this growth stage. You can incorporate several types into your indoor marijuana garden for a surplus light supply. Each of these lights has its advantages and disadvantages. It is prudent to choose the best ones; we've invested our time and resources in researching the best light for the vegetative growth cycle. Besides, we shall take you through the vegetative cycle of marijuana plants and the effective buying guide when opting for the best grow light for vegetative growth.

3 Top Lights for Vegetative Growth

Slim 600H Gen2 Dimmable LED Grow Light

This is a superior grow light with high-performing features that outperform all other grow lights. The massive 42 x 42 inches size features the latest LED technology with uniform light intensity for uniform growth.

4.9/5

  • The overbuilt heat sink ensures efficient cooling of the grow light minimizing heat production
  • The dimming feature allows you only to select the light intensity you want for your plants.
  • The double-row LED strips to improve efficacy.

Wideband LED Grow Light

It features a more compact design but delivers a stunning top performance to realize the best yields. In addition, it has linear optics and a wideband spectrum that ensures mass foliage growth. 

4.8/5

  • It perfectly fits your 1.5 × 3.0 inches to 2.0 × 4.0 inches grow tent
  • It  does not emit heat
  • It  produces concentrated red light and IR flower power
Horticulture Lighting Group Kit

This is a high performing grow light for vegetative growth. It emits a light output of 260W for sufficient light emission, making it an ideal replacement for HID lights.

4.7/5

  • The passive cooling design dissipates heat produced and promotes silent operations
  • The multiple spectra allow you to adjust the color spectrum to the requirement of your plants
  • The deep LED diodes are high-energy efficient options for rapid photosynthesis during the vegetative growth phase

What's the Best Light for Vegetative Growth

The vegging growth stage of any plant needs the blue spectrum light for mass foliage growth. However, the blue light spectrum isn't the only light intensity required at the vegetative stage. So, don't get influenced by reviews recommending an all-blue spectrum light for vegetative growth in your marijuana plants garden. So, what specifications should the best grow light for vegetative growth have?

A full spectrum grow light has the ideal spectrum for vegetative growth. However, the light should have high-intensity blue light. Ths light should have low power consumption and generate more output. Also, the light should emit less heat to the surrounding.

So, among the list, the following satisfied all our checklist for the best light for vegetative growth. They are, therefore, the best light for vegetative growth you can use in your indoor garden.

  • Slim 600H Gen2 Dimmable LED Grow Light

  • Electric Sky 180 V3 » Wideband LED Grow Light

  • Horticulture Lighting Group 260 Watt V2 BSpec Quantum Board DIY Kit (Veg)

  • Hydrofarm Agrobrite T5 Grow Light

  • Durolux T5 Ho Grow Light

Best Light for Vegetative Growth Reviews

Slim 600H Gen2 Dimmable LED Grow Light is the best grow light you can get for vegetative growth. It is a superior grow light with high-performing features that outperform all other grow lights. The massive 42 x 42 inches size features the latest LED technology with uniform light intensity for uniform growth. In addition, the grow light combines the RED and blue LEDs to allow the marijuana plants easily absorb the light at high intensities for an enhanced bud quality.

Slim 600H Gen2 Dimmable LED Grow Light

Features

  • It is a highly efficient grow light with dimming features giving you full control of the intensity levels. This feature also helps reduce the BTU output and helps the grow light last longer.
  • It features 4.6 LEDs per watt, ensuring the grow light delivers industry-best efficacy at 3.0 umols/j.
  • The grow light also has double-row LED strips with 2,768 LEDs ensuring your plants get the best light conditions. The double-row LED strips to improve efficacy and deliver 1200+ Photosynthetic photon flux density (PPFD) at 10 and 12 inches.
  • It features LH351H Blue LEDs and LH351H Red V2 LED Chips at 3.75 umols/j. These LEDs are the best bloom enhancers, ensuring you get a balanced spectrum that the marijuana plants can absorb at high intensities.
  • The recommended dimmer settings for vegetative growth are 50% power at 48 inches hanging height or 25% power at 24 inches hanging height. However, for flowering stages, the dimmer settings should be adjusted to 50% at 24 -30 inches hanging height between the first and third weeks. Adjust the settings to 75% power at 18 to 24 inches hanging height between the fourth and sixth week. The power should be 100% at 12 - 18 inches hanging height between the seventh and tenth weeks.
  • It features 48 Samsung LH351H Version 2 Deep Red LEDs, 8 LG UV LEDs, and 24 Samsung LH351H Royal Blue LEDs that enhance bloom for the best foliage growth.
  • Slim 600H Gen2 Dimmable LED Grow Light has an overbuilt heat sink that cools the grow light ensuring it releases very minimal heat. The fanless design ensures the cooling process is quiet without any noise.
  • It measures 41.0 x 42.0 x 4.0 inches and has an average weight of 32.0 lbs.

Specifications

  • Total LEDs: 2,768
  • LEDs Per Watt: 4.5
  • HID/HPS equivalent: 1150 watt DE HPS
  • IP Rating: IP65 Waterproof
  • PPFD at 10 inches: 1267
  • Actual Power Draw: 600 watts max
  • Amps: 5.25 Amps at 120v (2.6 Amps @ 240v)
  • Voltage : 110 -277 volts
  • Durability: 100,000 Hours+  
  • Dimming: Central Mounted Dimmer 25%, 50%, 75% & 100% settings
  • Fixture Dimensions: 41.0 x 42.0 x 4.0 inches 
  • Fixture Weight: 32 lbs

Power and Output

Slim 600H Gen2 Dimmable LED Light has eight light bars. Each bar totals 75 watts, bringing the total power output of grow light to 600 watts.

The grow light has a voltage range of 110 to 277 volts. It delivers 5.25 amps at 120v and 2.6 amps at 240v. It features 336 Samsung LM301H LEDs, 3 Samsung LH351H 450nm Royal Blue LEDs, and 6 Samsung Versions 2 LH351H 660nm Deep Red LEDs. Besides, it has 1 LG UV LED.

Pros

  • The overbuilt heat sink ensures efficient cooling of the grow light minimizing heat production.
  • The dimming feature allows you only to select the light intensity you want for your plants.
  • Integrating the RED and blue LEDs promotes bud quality as the plants can easily absorb light at high intensities.
  • The double-row LED strips to improve efficacy.

Cons

  • This fixture is pricey.

The Electric Sky 180 V3 (ES180 V3) Wideband LED Grow Light is a grow light integrating robust build and efficient light emission for quality vegetative growth. Its size is ideal for a 1.5 × 3.0 inches to 2.0 × 4.0 inches grow tent. Its 200W power output ensures sufficient light intensity emission for quality growth and improved yield.

It features a more compact design but delivers a stunning top performance to realize the best yields. In addition, it has linear optics and a wideband spectrum that ensures mass foliage growth. The recommended settings are as follows.

Wideband LED Grow Light

One ES180 fixture is enough for inches to 2.0 × 4.0 inches grow tent. On the other hand, two ES180 grow bulbs are enough for 3.0 × 3.0 inches to 4.0 × 4.0 inches grow tent. That is:

  • 1x ES180 – 1.5 × 3.0 - 2.0 x 4 inches Grow Tent

  • 2x ES180 – 3 x 3 - 4.0 x 4.0 inches Grow Tent

Otherwise, if your growth area is more than four inches y four inches, you may consider the ES300.

Features

  • The grow light measures 24.0 x 12.0 x 2.4 inches and has an average weight of 14.5 lbs.

  • It has a high power output of up to 200W, enough for efficient light emission.

  • It has a wideband full spectrum light ensuring rapid foliage growth in your marijuana plants.

  • It doesn't emit a striking color spectrum that would affect your eyes.

  • It has multiple light controls that allow you to adjust the light intensity you need for your marijuana plants.

  • It features a passive cooling system limiting heat production while promoting silent operation.

  • It has linear lenses that minimize light loss and ensure high light absorption rates by the vegetating marijuana plants.

  • It has a heavy-duty construction that makes it durable.

  • The grow light has a dimming kit that allows you to adjust the light intensity for the best growth conditions.

  • It also features a distributed design that works well for a close canopy deployment with less burning effect on your marijuana plants.

  • The fixture has a strong terpene profile for the best vegetative growth.

  • It also features a specialized wideband spectrum that gives maximum benefits to a vegetative marijuana plant.

  • It features the high-end latest LED technology that doubles the growing power of your marijuana plants at half-watt power usage.

  • It is built using premium quality components with safety certification from the US labs, guaranteeing you the safety of use.

  • It has easy-clean lenses protecting the LEDs, allowing for an effortless cleaning operation.

Specifications

  • Light Source Wattage: 200 Watts

  • Voltage 180 Volts

  • Power source: coded electricity

  • Mounting type: wall mount

  • Style: Garden

  • Switch type: dimmer

  • Item weight: 14.5 lbs

  • Item dimensions: 24.0 x 12.0 x 2.4 inches

  • Passive cooling system

  • Multiple light controls

Pros

  • This grow light perfectly fits your 1.5 × 3.0 inches to 2.0 × 4.0 inches grow tent.
  • It promotes safe working conditions as it does not emit heat and does not have striking light intensities that can damage your eyes.
  • The concentrated red light and IR flower power produced by this grow light have the best conditions for the vegetative growth of your marijuana plants.
  • The linear lenses and distributed LEDs ensure even and sufficient light distribution throughout your indoor growers.
  • Passive cooling ensures heat elimination and promotes a noise-free working environment.

Cons

  • The power cord is limited to 10 inches.

Horticulture Lighting Group 260 Watt V2 BSpec Quantum Board DIY Kit (Veg) is a high performing grow light for vegetative growth. It emits a light output of 260W for sufficient light emission, making it an ideal replacement for HID lights.

Horticulture Lighting Group Kit

Features

  • The light fixture has two QB288 Boards powered by Samsung that ensure deep canopy penetration. This way, you are guaranteed maximum yields.
  • It has dimmable lights that let you adjust the light intensity to the primary requirements of your marijuana plants. You can adjust its light intensity from 135 watts to 280 watts.
  • It features deep red diodes that are high energy efficient and promote rapid photosynthesis for vegetative growth.
  • The grow light has a passive cooling design consisting of a slate2 double predrilled 600mm heatsink that minimizes heat production and promotes quiet operation.
  • The grow light has a wide coverage. You can use it to light up 3 x 6 ft. or 4 x 4 ft.
  • It has multiple spectrums that make it ideal for different growing stages. For instance, the 3000K light spectrum is ideal for the vegetative stage of the marijuana plants, while the 4000k spectrum is suitable for the flowering stages of the same plant.
  • The dimming feature allows you to dim the light by 20% from 285W. When dimming, remove the driver's black plug with a Philips head screwdriver.
  • Lamp efficacy with QB288 V2 B-spec 2.5 µmol/J and board-level efficacy of 2.73 µmol/J.
  • It requires no additional thermal material between the heatsink and the LED board.

Specifications:

  • Dimmable: 135 - 280 Watts
  • Length: 600mm
  • Width: 205mm
  • Vegetative Footprint: 4.0 x 4.0 square feet
  • Board Level Efficacy: QB 288 V2 2.63 µmol/J, 181Lm/W
  • Lamp Efficacy: QB 288 V2 2.47 µmol/J , 170Lm/
  • Spectrum Options:
     
    1. 3000K spectrum for vegetative growth
    2. 4000k spectrum for seed to harvest phase
    3. RSpec (Full Spectrum) for full spectrum growth

Pros

  • The multiple spectra allow you to adjust the color spectrum to the requirement of your plants.
  • The deep LED diodes are high-energy efficient options for rapid photosynthesis during the vegetative growth phase.
  • The passive cooling design dissipates heat produced and promotes silent operations.
  • The multiple spectrums the grow light supports make it a viable option at any growth stage of the marijuana plants.

Cons

  • It has a shorter power cord.

The Hydrofarm AgroBrite T5 Grow Light System is a sturdy grow light that guarantees high performance as far as indoor marijuana growth is concerned. The grow light has a high-performance faceted specular aluminum that ensures an even distribution of light. Besides, it has up to 60,000 lumens of light and features powder-coated steel housing, ensuring it lasts longer. In addition, the system comes in various sizes giving you flexibility when buying one for your garden.

Hydrofarm Agrobrite FLT412 4 Foot 12 Tube Grow Light

Features

  • This grow light system measures 46.2 x 34.9 x 2.8 inches and has an average weight of 40.5 lbs.

  • It has a high output of HO light (6400K spectrum) for the best foliage growth condition.

  • The grow light is durable, with a more than 20,000 hours lifespan.

  • It has a versatile installation with three different possible installation methods. You can have overhead, vertical, or horizontal installation ensuring efficient lumen access to the plants.

  • It has a high lumen capacity of up to 60,000, ensuring your plants get enough light for vegetative growth.

  • It features powder-coated steel housing that ensures it lasts longer.

  • The faceted aluminum delivers high performance and ensures the grow light distributes light evenly.

  • The fixture features a 10-inch grounded power cord, twelve 6400K T5 tubes, high efficient aluminum build material.

  • It has multiple power switches allowing you to choose the number of lumens supplied to the plants.

  • It has a push-button control mechanism that allows you to control the grow light easily.

  • It has a high output of energy-efficient T5 bulbs, doubling the light output of normal fluorescent tubes, ensuring an efficient light supply to your marijuana plants.

Specifications

  • Item Dimensions: 46.2 x 34.9 x 2.8 inches

  • Voltage: 120 Volts

  • Power Source: Corded Electric

  • Material: Steel

  • Item Weight: 40.5 pounds

  • Color temperature: 6400K

  • Total lumens: 60,000

  • Durability: 20,000 hours

Power and Output

The light fixture has a fluorescent setup, allowing the grow light to save energy. The fixture has 12 bulbs, each producing 5,000 lumens bringing the total lumens to 60,000.

The effective power output of this light system is 648 watts, which is enough for the vegging stage of your marijuana plants. On the other hand, the light source wattage is 54 watts.

The voltage for the light fixture is 120 Volts with a coded electricity power source.

Pros

  • The Hydrofarm AgroBrite T5 Grow Light System has an ideal color spectrum for vegetative growth.
  • The multiple mounting positions ensure an even distribution of light for vegetative growth.
  • More than one power switch controls the number of lumens reaching your marijuana plants, ensuring the best growth.
  • The high output and energy-efficient T5 bulbs have an efficient light distribution sufficient for marijuana growth in the vegging stage.

Cons

  • This grow light system is bulky and produces a higher level of heat.

Durolux T5 Ho Grow Light is a Plug-in 4 ft 4-lamp fluorescent grow light with the optimum conditions for the vegetative stage of marijuana plants. Its sturdy construction ensures it lasts longer, eliminating the need for early replacement. You can adjust the fixture to different hanging levels because of the hanger chains. T5 grow light is bright with on-point light intensities for optimal vegetative growth. Besides, it does not produce much hence making the conditions further conducive.

We recommend you hang the light fixture 3 to 4 inches above your marijuana plants.

Bloom Veg Daisy Chain with Bulbs

Features

  • This grow light measures 46.0 x 12.0 x 4.0 inches and has an average weight of 8.0 lbs.

  • It delivers a high light output of up to 20,000 lumens for professional marijuana growth. Its light output is 30% more than other comparable systems.

  • It comes with all accessories one would need for the setup, including four 6500K 4ft Lamps, eight feet power cord, hanging hooks, and chains.

  • The system has a flexible light output with two switches allowing light dimming. The first switch is for the two inner bulbs, while the other two are for the remaining two outer bulbs.

  • The gro light guarantees a safe operation. You can work with it in damp conditions without any risks.

  • It has a voltage rating of 120V Input.

  • The fixture has a power output of 230 watts, ensuring high performance for the optimal growth of the marijuana plants.

  • It has a high reflectivity of up to 95% (German Hammertone Reflector), ensuring stray light intensities are reflected in the plants for efficient absorption by marijuana plants.

Specifications

  • Controller Type: Push Button

  • Light Source Wattage: 230 Watts

  • Item Dimensions 46.0 x 12.0 x 4.0 inches

  • Voltage 120 Volts

  • Power Source: AC

  • Item Weight: 8 lbs

  • Color Temperature: 6500 Kelvin

Power & Output

The Durolux T5 Ho Grow Light features four bulbs four feet long each. Each bulb delivers 5,000 lumens, bringing the total power to 20,000 lumens. The high lumen capacity and the massive size of this grow light allow for vegging of two marijuana plants.

The bulb also has a high color spectrum of up to 6500K. This specification allows for more blue light emission, which is the ideal color spectrum for the vegetative growth stage of the marijuana plant.

The grow light has a voltage rating of 120 volts. Besides, it has a power output of 230 watts, enough for robust marijuana plant growth at the vegetative stage.

Installation

The light weight of this grow light makes it effortless to mount and install. Therefore, you can do the task on your own. The package comes with all the necessities you require to mount it. After you successfully mount it, you should proceed to turn it on; it is a mount and play fixture. However, you should ensure that your power source is near the garden because the grow light only comes with a power cord up to 8 feet long.

Pros

  • The reflective material reflects more than 95% of light to your marijuana plants, ensuring efficiency and proper growth.
  • The 230 W power output is high enough for efficient light emission for plant absorption.
  • The ability of the grow light to withstand damp conditions makes it safer to operate.
  • The 8 lbs low weight ensures an effortless mounting process.

Cons

  • The grow light is incompatible with Ground Fault Interrupters (GFI) outlets.

The Best Light for Vegetative Growth Buying Guide

When buying the best light for vegetative growth, there are several options to choose from. However, before you commit to a particular light, it would be wise to consider the factors below.

Lumen Output

The lumen output of a grow light is a very significant factor to consider. For most marijuana plants, you will need a range of between 5,000 and 10,000 lumens per square foot. One grown marijuana plant needs at least 2.0 x 2.0 foot grow space. Therefore, you will need a lumen output of 10,000 to 20,000.

Color Spectrum

Marijuana plants require different light spectrums at different growth stages. During the vegetative phase, the plant needs a lot of blue light, meaning that you will need a color spectrum of between 5000K to 6500K.

Durability

No one wants a light fixture that would need replacement after a short while of operation. Research the materials used to build the light fixture before you buy it. Metallic-made grow lights with fewer plastics last longer.

Ease Of Mounting

The grow light you select should come with all the components you need for mounting. Besides, the fixture should be lightweight to allow for an effortless mounting operation. This factor means that you should go for smaller and lighter grow lights. However, if you have a larger grow tent, you can consider bigger options, but this option will be heavier.

Type of Bulb

Fluorescent light bulbs are the best options when your marijuana plants reach the vegetative stage. These bulbs produce high power output at the light source. Besides, they have less power consumption and produce less heat. However, you can also opt for metal halide bulbs.

On the other hand, a full spectrum bulb is a viable option if you don't wish to change your light fixture when you transition from the vegetative to flowering stage.

Heat Generated

Marijuana plants, at any stage of growth, do not need heat. Therefore, the light you choose should not generate heat. This specification best suits the fluorescent lights. However, if the bulb generates heat, it should have a passive cooling system that dissipates excess heat and ensures quiet operation.

The Vegetative Phase - What Is It? 

Marijuana has seven stages in its growth cycle. The vegetative phase is the fourth stage, coming after the seedling stage. Pre-flowering comes next after it.

At this stage, the marijuana plant develops its structure. The stem widens its girth, the height increases, and massive foliage develops. The vigorous growth means the plant would need much light for photosynthesis activities. As such, you will need more of a blue spectrum than any other light spectrum. Also, the humidity levels should be high for direct moisture absorption through the leaves.

FAQs

What Color Light Is Best for Vegetative Growth?

The best color light for the vegetative growth of marijuana plants is blue light. This light has a color temperature of between 5000K to 6500K.

Are LED Grow Lights Good for Vegetative Growth?

Yes, LED lights such as T5 fluorescents are good for vegetative growth. This light has higher blue spectrum emission that works best for the vegetative phase. It promotes even growth in marijuana plants regarding plant canopy and node spacing.

Besides, LED lights have lower power consumption and produce less heat. Therefore, they are the most efficient light for the vegetative stage, given that they have an optimized color spectrum for growth.

Choosing the Right Light for Vegetative Plant Growth

Consider the following factors when choosing the right light for vegetative growth.

  • Color spectrum

  • Lumen output

  • Heat generated

  • Type of bulb

Best Light For Vegetative Growth

About the author 

Morgan

I discovered the benefits of Cannabis at a young age in 2002, with years of trial and error, my knowledge grew just like my plants. As my love for cannabis unfolded I began to teach and learn, trying to gain as much information and practical growing experience.

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