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How Close Do Grow Lights Need to Be to Plants?

by TUBU

December 1, 2023


Plant grow lights are essential for growing plants indoors. They provide the light that plants need to grow and bloom. However, how close the plant grow lights are to the plant is an important question. If they are too close, they may burn the plant's leaves; if they are too far away, they may not provide enough light.

LED Grow Light

Factors affecting the distance of plant grow lights from plants

Type of Plant

Different types of plants have different light needs. For example, light-loving plants need more light and therefore need to have plant grow lights closer to them, while shade-tolerant plants need less light and therefore can have plant grow lights farther away.

Plant Growth Stages

Plants require different amounts of light at different stages of growth. For example, plants in the seedling stage need more light, so you need to place your grow lights closer together, while mature plants need less light, so you can place your grow lights farther away.

Type of Plant Grow Light

The type of plant grow light also affects its light intensity. For example, a high-powered plant grow light provides more intense light, so you can move it farther away from your plants.

Power of Plant Grow Lights

The higher the power of a plant grow light, the more intense its light intensity, so you can move it farther away from the plants.

Best Grow Lights

TUBU Recommends LED Grow Light

Quantum Panel LED Grow Light
- Added deep Red and IR.
- Use LM301B chip
- High-efficiency full spectrum LED grow light.
- Waterproof-ip65, safer for indoor growing.
- Dimmable Lightmyleaf brand driver, with 20%~100% easy dimming knob to turn on/off the light.

Greenhouse Grow Light
- Customization available
- Multiple LEDs can be connected in series
- Detachable and foldable, PPF 2.8umol/J
- Integrated driver and dimmer design, plug and play.
- Group control, knob dimmers, and RJ 14 ports available
- IP65 Waterproof Rating, Fast Heat Dissipation

Octopus LED Grow Light Bar
- Added deep Red and IR
- Use JUSON drive
- High-efficiency full spectrum LED grow light.
- aterproof-ip65, safer for indoor growing
- Utilizing Samsung LM301H diodes
- With a full spectrum for different stages

Grow Light Installation Tutorial and Application Areas

General Recommendations for Distance of Plant Grow Lights from Plants

Seedling Stage: 12-18 inches

Plants in the seedling stage need more light to promote their growth. Therefore, it is recommended to keep the plant grow lights 12-18 inches away from the plants.

Growing Stage: 18-24 inches

Plants in the growing stage require a reduced amount of light compared to the seedling stage. Therefore, it is recommended to keep the plant grow lights 18-24 inches away from the plants.

Flowering Stage: 12-18 inches

Plants in the flowering stage require more light to promote their blooming. Therefore, it is recommended to keep the plant grow lights 12-18 inches away from the plants.

How to Adjust the Distance of Plant Grow Lights

Observe the Leaves of the Plant

In practice, you can adjust the distance of the plant grow light by observing the leaves of the plant. If the plant's leaves appear to burn, the plant grow light is too close and needs to be adjusted farther away; if the plant's leaves appear to be growing in vain, the plant grow light is too far away and needs to be adjusted closer.

Using a Light Intensity Meter

You can also use a light intensity meter to measure the light intensity of your plant grow light. Depending on the type of plant and stage of growth, adjust the distance of the plant grow light so that its light intensity is within the right range.

Conclusion

The distance of plant grow lights from plants is an important issue. By understanding the factors that affect the distance of plant grow lights from plants and adjusting the distance of plant grow lights according to the type of plant, growth stage and light needs, you can ensure that your plants get enough light and grow well.

About the author

TUBU is an expert in LED light research with more than 10 years of experience in this field. We hope that through our TUBU research, LED lighting technology will become more popular and bring greater convenience and comfort to people's lives.

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