How high should LED lights be above 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 be too close to plants?

If your LED lights are too close to your plant, the plant will begin to bleach and develop yellow spots. Since LED lights do not produce as much heat as other types of grow lights they do not burn plants as much. However, you should still be cautious if the plant presents signs that it is being burned.

How far should a 1000 watt LED light be from plants?

Lower wattage LEDs of around 200 watts should sit between 12-20 inches from the top of the plant. Higher wattage LEDs of 1000 watts and above should sit between 36-46 inches from the top of the plant.

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

Plants exhibit several signs when they're getting too much light. The most apparent sign is leaf burning. This typically causes the yellowing of leaves at the top of the plant but the veins stay green, and the leaves take on a yellow or brown, burnt look.

How many plants can a 1000W LED light grow?

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.

How Far Should LED Grow Lights Be From Plants? - FAQ



Where should grow lights be placed?

Grow Light Placement Tips

TIP: Place grow lights directly over plantings to mimic natural sunlight. As a rough guide, incandescent grow light bulbs should be at least 24 inches over your plants. Fluorescent and LED lights have a lower heat signature, so they can be placed 12 and 6 inches over plants respectively.

Can plants get too much artificial light?

Duration of Light

Most houseplants do well with 12-16 hours of artificial fluorescent light each day. Too little light will result in elongated, spindly growth and too much light will cause a plant to wilt, color to fade, soil to become excessively dry and foliage to burn.

Can I use normal LED light to grow plants indoor?

Yes, plants will grow under normal LED lights. Grow lights aren't special – they're just strong. Bright light causes plants to grow, whether they're marketed as grow lights or not. They do need to be close to them though – the closer the better (without them burning).

What is the difference between a grow light and a LED light?

Standard LED lights only provide illumination while LED grow lights have a wider spectrum of both blue and red light that promote vegetative growth and flowering, respectively.

Is white LED light good for plants?

White LEDs are designed and manufactured for humans- they are ideal for our eyes' color needs, but not for plants!

How do you use LED lights for plants?

LED grows lights should be placed from 14 to 30 inches above the plants. One of the biggest advantages of using LEDs is that they put off so little heat. So, you can place them close to your plants without worrying about burning them.

Do plants Photosynthesise in artificial light?

The light source isn't an essential factor, but natural light is ideal. However, photosynthesis can occur in the presence of artificial light. If your houseplants aren't getting enough natural light where they are placed, you can always use artificial lights.

How many hours a day should plants be under a grow light?

Grow lights should be left on for at least 8 to 10 hours a day, which mimics the amount of natural sunlight plants are typically exposed to within a day. Putting your grow lights on timers can help to automate this process so you don't accidentally forget to turn your lights on or off.

Are purple grow lights better?

To summarize, there is generally a tradeoff between energy efficacy of an LED fixture and people's preference of a light spectrum. LED fixtures that emit a purplish light are usually less preferred by people, but are often the most efficient at converting electricity into light useful to plants.

How far apart to space led grow lights?

Spacing your lights 4' apart will usually be a good benchmark to shoot for, but variances in wattage, size, and footprint will dictate what works best for you.

Can you leave grow lights on 24 hours a day?

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.

Do plants need complete darkness at night?

Plants, shrubs and trees use sunlight for photosynthesis during the daytime, but at night they need darkness to regenerate a key compound - phytochrome. Nighttime lighting can reduce vegetation's ability to properly create this compound.

How close should plants be to grow lights?

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.

What time should you run your grow lights?

Most gardeners use grow lights with the intent to transplant seedlings outside, so it makes sense to keep to typical daylight hours, like between 6 AM to 10 PM or 5 AM to 11 PM. Some gardeners run grow lights during the daylight hours, and others run their grow lights through the evening hours into night.

Which color light is best for photosynthesis?

The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm). Therefore, the best light sources for photosynthesis should ideally emit light in the blue and red ranges.

Can LED light replace sunlight for plants?

They also offer an option for low-cost, UV disinfection that requires little energy to power. A team of researchers at Purdue University have also determined that LED lights in certain combinations can be as effective as sunlight for growing seeds.

Can plants survive off artificial light?

Researchers can successfully grow plants using only artificial light in growth chambers. But sunlight is best for most plants. It's generally more intense than artificial light, and it's pretty equally distributed among the different wavelengths that earthly plants have evolved to like best.

Do plants grow faster with LED lights?

LED lighting produces larger plants and better crop yields.

Can leaves droop from too much light?

Droopy leaves

One of the chief signs your plant is getting too much light is drooping leaves. When a plant suffers from any health problems, its leaves are usually the first thing to experience problems. Drooping leaves indicate dying leaves and could be a severe problem for our plant's overall health.

What color light is best for plant growth?

Light spectrum
  • Blue light helps plants produce chlorophyll, the pigment they need to grow. It also helps encourage germination and root development in young plants and seedlings.
  • Red light regulates plant growth and helps plants produce flowers and fruit.
  • Green light helps maximize photosynthesis.