Secret: Why LED Plant Lighting Can Replace The “Sunshine” Regulation Of Plant Growth?

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The LED plant lighting is called Indoor “Sun”, it can replace the Sun, to ensure the healthy growth of plants in the indoor. Indoor agriculture has proved that for plants, LED plant lights can even exceed the role of sunlight. So, LED plant lights can replace the “Sun” regulation of indoor plant growth? What advantage does it have over sunlight? It all starts with how plants absorb and use light.

Light plays an important role in plant growth, and plants absorb light mainly through photosynthesis. In the process, plants use their “light-harvesting antennas” to absorb sunlight, store it as chemical energy in the form of sugars, and then use that energy to grow.

At the same time, some of the absorbed light can be used as environmental signal factors to regulate a series of plant growth and development behaviors, such as seed Germination, morphogenesis, flowering and secondary metabolites synthesis.


The plants that are exposed to the sun actually absorb only a small part of the sun’s rays, most of which are not used by the plants. This is because the wavelength range of sunlight covers the entire electromagnetic spectrum from x-rays to radio waves, while the photosynthetically active radiation available to plants is in the visible light range (400-700 nm), that is what we usually call Red Orange Yellow Green Cyan violet seven-color light.

Spectral analysis showed that in the seven-color light, plants mainly absorb red and blue light for photosynthesis. Green Light, yellow light, and Far-red light are involved in other metabolic processes of plant growth.

In addition to the spectral composition, plant growth also requires appropriate photoperiod and light intensity. The sum of plants’ needs for spectrum, photoperiod, light intensity, and light mode is called the light formula.

About the spectrum

In the seven-color light, red light and blue light mainly regulate the photosynthesis of plants, thus affecting the yield. That’s because when plants sense more red light through their light-harvesting antennas, they release a hormone that prevents chlorophyll from breaking down. This allows plants to convert light energy into more chemical energy, making them stronger. In addition, plants also need red light to illuminate the normal flowering and fruit.

Plants’ blue light receptors trigger a hormone response when they sense higher levels of blue light, slowing the growth of stems and leaves, so blue light helps the plant’s stems grow stronger.

On light intensity and photoperiod

In addition to the spectral composition, plant growth also requires appropriate light intensity and photoperiod. Within a certain range of light intensity, the photosynthetic rate of the plant increases with the increase of light intensity, but it does not always increase the light intensity. For every plant or every developmental stage, excessive light intensity leads to photoinhibition, which affects yield and quality, but also wastes a lot of electric energy and increases investment cost.


After fully understanding the light formula requirements of different plants and different growth stages of the same plant, the researchers designed a “light cookbook” and used LED “core light” technology to balance the relationship between yield, quality, and energy consumption, the LED supplementary light lamp, which can satisfy the energy demand of plant photosynthesis and adapt to the precise control of plant growth and development, as well as save energy and cost in production, is designed to replace sunlight with artificial light, to help plants grow healthily.

Led Plant Lights with the right light formula can not only ensure the efficient photosynthesis of plants but also special light formula can be like condiments, regulating plant behavior, let the vegetable more delicious nutrition, fresh flowers more colorful, fruit sweeter.

Led plant lamp features powerful, it not only an energy-efficient and long life but also low heat output can be closer to plants, very suitable for indoor farming. Compared to the sun, the biggest advantage of LED plant lights is that it is controllable.

We know that the sun is the source of energy for the growth of all things, but it is not foolproof. The rotation of the Earth Causes The Sun’s position to change and the sun to “disappear” on rainy days, meaning plants can’t bask in the sun all the time. In addition, the sun for all things share, will not favor any kind of plant, can only plant to adapt to it.

With the advent of artificial light, and especially the advent of LED plant lights, everything is different. Unlike the instability of the sun, the LED plant lamp does not vary in intensity with day or night, summer or winter, rain or sunny days. It provides a constant and consistent light for the plant.


In addition, as mentioned above, we can also precisely design, tailor-made plant light formula. For example, different light for different crops, more purple light for tomatoes, a more red light for blueberries, for example, different light for the same crop at different growth stages, at this stage, the red light will cause the plant to grow long and thin, so the amount of red light can be controlled. At the fruit-hanging stage, more red light can be shone, promote fruit expansion, increase the accumulation of sugar in the fruit, so that the fruit becomes more delicious.

Led plant lights give farmers access to the sunlight they need at any time, giving them something they can’t have in the sun: Control.

But after all, all things come from nature, comply with nature, long-term light will always bring the impact of plants. Plants also need rest and a cool, overcast day. Last but not least: Fill the light is just “fill”, and can not replace the Sun. It’s just an extra light on a cloudy day or a growing season.

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