Do led grow lights actually work?

Asked by: Prof. Alexie Reichel
Score: 4.2/5 (63 votes)

LED grow lights work well because they're designed to imitate the sun. They give out minimal heat but provide both red & blue light that plants require. In addition, grow lights emit very specific wavelengths of light, which is critical for plant growth.

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Just so, Can any LED light be used as a grow light?

You can use any LED bulb to grow plants if they are emitting enough light. Plants often also look for warmth to come from the light source and we know LED bulbs do not provide much of that.

Accordingly, Are LED lights good for growing plants indoors?. LED Grow Lights are perfect for indoor seed starting, as well growing as light-loving houseplants, such as orchids. With a set of grow lights, you can grow many plants indoors, including houseplants, orchids, and even some fruit and vegetable crops.

Also Know, Is it bad to look at LED grow lights?

The LED lights are very concentrated and can damage your eyes. ... Never look directly into LEDs and wear sunglasses. The bottom line is that LED grow lights are no more dangerous than any other type of grow light.

Can I leave my grow light on 24 hours?

A: In general, you should not leave grow lights on 24/7. Plants need a light-dark cycle to develop properly. It's believed that they truly do “rest” during periods of darkness, and probably use this time to move nutrients into their extremities while taking a break from growing.

27 related questions found

Is LED light bad for the eyes?

A 2012 Spanish study found that LED radiation can cause irreversible damage to the retina. A 2019 report from the French Agency for Food, Environmental and Occupational Health and Safety (ANSES) warned of the “phototoxic effects” of blue light exposure, including an increased risk for age-related macular degeneration.

Should I run my grow lights at night?

Like the sun's cycle, it is unnecessary to run grow lights around the clock. A good general rule of thumb to remember, if your plant is flowering or a vegetable it needs 12 to 16 hours of light in a day and 8 hours of darkness to rest. ...

How far should LED grow lights be from plants?

There is no universal rule for setting the distance but it's recommended that LEDs are placed 12 to 18 inches away from the plants. Light is among the most vital factors to consider when growing plants because it triggers the photosynthesis process.

Can LED lights catch on fire?

LED lights do not emit light from a vacuum as most other bulb types do. ... Overheating is one of the reasons a bulb could start a fire, but that is highly unlikely to happen with LED lights. They may feel hot to touch, but they produce light at a significantly lower temperature than other bulbs.

What color LED light is best for plants?

We could say that the two most important light colors to place in an LED lamp are: red and blue. Red is the main component that plants need for photosynthesis and stem elongation inhibition. Additionally, it signals to the plants that there are no other plants above it and that it can thus have uninhibited development.

What color light do plants like?

Different color light helps plants achieve different goals as well. Blue light, for example, helps encourage vegetative leaf growth. Red light, when combined with blue, allows plants to flower. Cool fluorescent light is great for cultivating plant growth indoors.

Will 5000K LED grow plants?

5000k Vs 6500k For Plants

Both 5000K and 6500K white light is great for growing plants, but not as great for flowering them. It will still work fine, but a warmer color temperature would work much better.

Can LED lights be left on 24 7?

To put it simply, well-manufactured LED lights are extremely long-lasting and can be left on 24 hours, 7 days a week. This is because, unlike conventional types of light, LEDs produce minimal amounts of heat, which means they are unlikely to overheat or set on fire.

Is it bad to sleep with LED strip lights on?

Yes, LED lights are ideal for leaving on for long periods of time due to their low power usage and very low heat output. They are more suited to use as a night light/ background accent light in general.

Is it safe to sleep with LED lights on?

It's well-documented that exposure to blue light can negatively impact your sleep quality. Electronic screens, LED lights, and fluorescent lights can all contain blue light. One small older study from 1991 and one 2016 study on mice found evidence that green light could also negatively impact melatonin levels.

How do you know if your plant is getting too much light?

If your plant is not getting enough light, the most common sign is the yellowing and dropping of leaves, stunted leaf growth, elongated stems, and a dull-green color. If your plant is getting too much light, then its leaves will have singed tips, burned patches, or will be falling off (yikes!).

How many plants can I grow with a 1000W LED light?

As such, it could provide solid coverage for up to 4 plants. Yield Lab 1000W HPS+MH Cool Hood Reflector Grow Light Kit (Price: $239.95) — With a 1000w grow light, you'll get 130,000 lumens from an HPS bulb and 110,000 lumens from an MH bulb. That's sufficient to provide coverage for up to 6 plants.

Can Too Much light cause droopy leaves?

Providing your plant with too much light will cause it to burn and drop since it will die. Leaving it in the dark will not allow the plant to make its food. No sunlight means no photosynthesis, which in return means that the plant will lose energy and die.

Can you leave grow lights on 24 hours a day tomatoes?

Tomato plants don't seem to suffer any adverse affects from the 24 hours per day treatment. Keep in mind that 24 hour light will significantly speed up growth which could make a seedling get too large for the pot its in and/or be ready to plant outside well before the weather is agreeable.

What happens if you leave grow lights on 24 hours a day?

Leaving your grow lights on for 24 hours a day increases the total amount of light your plants receive during the day, which leads to faster growth. But your plants will likely be weaker and more susceptible to disease.

How many hours a day should a grow light be on?

How Long Should a Plant Grow Light Be Left On? As a general rule of thumb, most vegetables and flowering plants need 12 to 16 hours of light per day, with flowering plants at the top end of that range. Plan on giving most plants at least 8 hours of darkness per day.

What color LED light is best for your eyes?

Yellow light is the best contrast against blue light and can protect the retinas of the eyes.

How do you protect your eyes from LED lights?

Use Computer glasses or Anti-reflective lenses

Computer glasses with yellow-tinted lenses that block blue light can help ease computer digital eye strain by increasing contrast. Anti-reflective lenses reduce glare and increase contrast and also block blue light from the sun and digital devices.

Are warm white LED lights bad for eyes?

ARMD is the leading cause of vision loss in adults over 50. The ANSES report differentiates between two types of blue light: ”warm white” found in home LED lighting was found to have weak phototoxicity risks, not unlike traditional lighting.

What are the disadvantages of LED lights?

What are the disadvantages of LEDs?
  • High up-front costs.
  • Transformer compatibility.
  • Potential color shift over lamp life.
  • Performance standardization has not yet been streamlined.
  • Overheating can cause reduced lamp life.