Do LED Grow Lights Work? | Yes, and Here Are the Benefits of Using Them!

by Morgan

May 3, 2022

How To Choose The Right Lighting For Your Marijuana Grow Room

It's no secret that indoor gardening is becoming more and more popular. With advances in LED grow light technology, growing your plants indoors has never been easier. But do LED grow lights work? And more importantly, what are the benefits of using LED grow lights compared to other types of lighting? The answer is a resounding yes. LED grow lights are one of the most effective ways to grow plants indoors.

Moreover, a lot has been said about LED grow lights in the cannabis community. Some people swear by them, while others think they're a waste of money. In this blog post, we'll look at LED grow lights and answer some common questions about their performance. 

What Are LED Grow Lights?

LED grow lights are a type of lighting that uses light-emitting diodes (LEDs) to produce light. LEDs are more energy-efficient and last longer than traditional incandescent bulbs. They also emit very little heat, which is essential for plant growth.

What's the Role Of Grow Lights In Plants?

Grow lights provide plants with the light energy to photosynthesize and produce food. Photosynthesis is how plants convert light into chemical energy that they can use to grow and reproduce.

In addition to providing light for photosynthesis, you can also use grow lights to regulate the amount of light that plants receive. It is essential because too much or too little light can inhibit plant growth.

Grow lights should be used when natural sunlight is unavailable, such as during the winter months or in countries near the equator. You can also use them to supplement sunlight in areas with insufficient sunlight for plants to grow correctly.

How Do LED Grow Lights Work?

LED grow lights work by emitting light at a specific wavelength. This wavelength is within the visible spectrum (400-700nm) and is necessary for photosynthesis. Photosynthesis is the process plants use to convert light into energy. LED grow lights help promote healthy plant growth by providing the right kind of light.

Moreover, grow lights can emit light at different wavelengths depending on the type of LED chip used. It's important because different plants absorb light differently. For example, blue light is absorbed more by foliage, while red light is absorbed more by flowers and fruit. Using a mix of different wavelength chips, LED grow lights can provide the right kind of light for all stages of plant growth.

What Are The Benefits of Using LED Grow Lights?

There are many benefits of using LED grow lights, including:

They're Energy-Efficient: LED grow lights use less electricity and produce very little heat. As such, they can help you save money on your energy bill. The led light output is also very focused, so there is little light wasted.

They're Long-Lasting: LED grow lights have a lifespan of 50,000 hours or more. As such, you won't have to replace them as often as other types of lighting.

They're Versatile: They come in a variety of shapes and sizes. You can find LED grow lights that fit any grow space, whether large or small.

They're Customizable: You can choose the right light spectrum for your plants. It allows you to tailor the light to your plants' specific needs.

weed plant under the purple led lights

What Are The Disadvantages of Using LED Grow Lights?

There are a few disadvantages of using LED grow lights, including:

  • They're Expensive: LED grow lights can be more expensive than other types of lighting. However, they last longer and use less energy, so they'll save you money in the long run.
  • They Require Specialized Knowledge: You need to understand the light spectrum and plant growth to get the most out of LED grow lights. Without this knowledge, you might not be able to produce the results you want.

Factors to Consider When Buying LED Grow Lights

When buying LED grow lights, there are a few factors you need to consider, including:

The Size of Your Grow Space

The size of your grow space will determine the number and type of lights you need. You'll need more lights if you have ample growing space than a small grow space. Moreover, you'll need to consider the height of your grow space. The taller your grow space, the more lights you'll need.

The Type of Plants You're Growing

The type of plants you're growing will determine the light spectrum you need. Different plants need different light spectrums to grow correctly. Cannabis plants, for example, require a different light spectrum than other types of cannabis plants. As such, you'll need to choose a light spectrum suitable for the plants you're growing.

Lens Design

The lens design of your LED grow lights is important for two reasons. First, it affects the light intensity. Second, it affects the light distribution. If you want a more intense light, you'll need to choose a light with a narrower beam angle. If you want a more evenly distributed light, you'll need to choose a light with a wider beam angle. Also, LED strip lights are a great way to provide supplemental light to your plants, and they're a lot more affordable than traditional grow lights.

Wavelength Output

The light intensity, the color of LED grow lights, and the wavelength of the light determines lights. The most common wavelengths used in LED grow lights are red and blue. Red light is suitable for promoting vegetative growth, while blue light is good for promoting flowering.

You can also find LED grow lights that emit other wavelengths, such as infrared and ultraviolet. However, these are less common, and they're not as effective for plant growth.

The Wattage

The wattage of LED grow lights is another essential factor to consider. The higher the wattage, the more influential the light. However, you don't necessarily need a high-wattage light. For most plants, light with a 50-100 watts wattage is sufficient.

Light Intensity and Spectrum

The light intensity and spectrum are important for two reasons. First, they determine the amount of light your plants receive. Second, they determine the quality of the light your plants receive. If you want your plants to grow quickly, you'll need to choose a light with high intensity. If you want your plants to grow healthy and strong, you'll need to choose a light with the right spectrum.

Your Budget

LED grow lights can be expensive. If you have a limited budget, you might consider buying used or refurbished lights. Also, be sure to compare prices from different vendors before you purchase.

Plants That Benefit Most From LED Grow Lights

Almost all plants benefit from LED grow lights. However, some plants benefit more than others. These include:

Cannabis Plants: Cannabis plants are one of the most popular plants grown under LED grow lights. It's because they require a specific light spectrum to grow appropriately. Moreover, LED grow lights produce very little heat, which is beneficial for cannabis plants.

Vegetables: Vegetables, such as tomatoes and cucumbers, also benefit from LED grow lights. They need a lot of light to grow properly. LED grow lights provide the right amount of light without producing too much heat.

Fruits: Fruits, such as strawberries and blueberries, also need light to grow properly. LED grow lights can help them get the light without producing too much heat.

indoor garden with lights

How to Use LED Grow Lights

There are a few things you need to consider when using LED grow lights, including:

The Distance Between the Light and the Plants

If the light is too close to the plants, it can damage them. If the light is too far away, the plants won't get enough light. You should keep the light about 12-24 inches away from the plants as a general rule of thumb. You might need to adjust the light as the plants grow.

The Length of Time the Lights Are On

The length of time the lights are on will depend on the plants you're growing. Cannabis plants need 18-24 hours of light per day. Other types of plants need 12-16 hours of light per day.

The Light Intensity

The light intensity will also depend on the plants you're growing. Cannabis plants, for example, need a higher light intensity than other types of plants. You can adjust the light intensity by changing the distance between the light and the plants.

How Long Should Plants Be Under LED Grow Lights?

The number of times plants should be under LED grow lights will depend on the plants you're growing. Plants need different amounts of light at different stages of their growth. Weed seeds and seedlings, for example, need less light than mature plants. You should start with 18-24 hours of light daily and adjust as needed.

It's also essential to give your plants a rest period. It is when they're not under the lights. If you turn on the lights at night, the plants won't be able to photosynthesize, and they won't grow. For most plants, a rest period of 12 hours without grow light is sufficient.

Do LED Grow Lights Work During DayTime?

Yes, LED grow lights can be used during the day. However, you'll need to use a timer to turn the lights on and off. Otherwise, the plants will get too much light, which might be damaged. Moreover, the light intensity will be lower during the day, so you'll need to adjust the distance between the light and the plants.

Are LED Grow Lights Safe?

Yes, LED grow lights are safe. They don't produce UV rays or other harmful radiation. However, it would be best if you still took precautions when using them. For example, you should avoid looking directly at the light and keep the light away from flammable materials.

Can LED Lights Be Harmful to Your Eyes?

Yes, LED lights can be harmful to your eyes. The blue light emitted by LED lights can damage the retina, the sensitive tissue at the back of the eye. It can lead to macular degeneration, a condition that causes vision loss. In addition, LED lights can cause headaches, dizziness, and other problems.

a hand touching the LED lamp

How to Protect Your Eyes When Using LED Grow Lights

There are a few things you can do to protect your eyes when using LED grow lights, including:

  • Avoid looking directly at the light.
  • Wear sunglasses if you have to look at the light.
  • Keep the light away from flammable materials.
  • Turn off the light when not in use.
  • Use a timer to turn the lights on and off.
  • Adjust the distance between the light and the plants as needed.

FAQ

Q. Are LED Grow Lights Better?

A. LED grow lights are more efficient than other types of grow lights. They use less energy and produce less heat. As such, they're ideal for growing cannabis plants.

Q. Do LED Lights Work to Grow Plants?

A. Yes, LED lights work to grow plants. They provide the right amount of light for the plants to grow correctly.

Q. Are All LED Bulbs the Same?

A. No, all LED bulbs are not the same. Different bulbs produce different light spectrums. You'll need to choose a bulb that produces the right light spectrum for the plants you're growing. You'll also need to consider the intensity and distribution of the light.

When choosing an LED bulb, it's essential to buy from a reputable vendor. This way, you can ensure that the bulb is of high quality and produces the light spectrum you need.

Q. How Much Do LED Grow Lights Cost?

A. LED grow lights can be expensive. The cost will depend on the size, intensity, and light spectrum. You can expect to pay anywhere from $50 to $500 for a high-quality LED grow light.

Q. Are LED Grow Lights Better Than HPS Lights?

A. LED grow lights are more efficient than HPS lights. They use less electricity and produce less heat. As such, they're better for the environment and your plants.

Conclusion

LED grow lights have come a long way in the past few years. They are no longer just for basic indoor weed gardening; you can use them to supplement or replace traditional grow lights for more extensive gardens. While there are still some skeptics, the consensus is that LED grow lights work and can produce excellent results when used correctly. If you're looking for an energy-efficient and cost-effective way to boost your garden's production, LED grow lights may be the perfect solution for you.

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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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