The importance of light for plant growth: everything you need to know

Light is one essential factor for plant growth. It is the source of energy for the photosynthesis , the process by which plants convert carbon dioxide and water into glucose and oxygen. Without sufficient light, plants will not be able to grow and will eventually die. In this blog we will discuss everything you need to know about the importance of light for plant growth and the benefits of LED lights.

How much light do plants need?

The amount of light plants need varies depending on the species and growth stage. In general, most plants need at least six hours of direct sunlight per day, but some varieties require up to 12 hours per day. However, there are also plants that can grow under artificial light sources such as LED lamps.

Advantages of LED lamps

LED lights are one of the best light sources for growing plants, especially indoors. They offer several advantages over traditional incandescent bulbs and fluorescent tubes. Some of these benefits include:

  1. Energy efficient: LED lamps use less energy than incandescent lamps and fluorescent tubes, which means lower electricity costs.

  2. Longer lifespan: LED bulbs last longer than traditional light sources, which means you need to replace them less often.

  3. No heat emission: LED lamps hardly emit any heat, making them safer for your plants and reducing the risk of fire.

  4. Directional light beam: LED lamps can provide focused light, allowing you to properly illuminate your plants and promote growth.

  5. Full spectrum: LED lights can emit different colors and intensities of light, giving your plants all the types of light they need.

How to use LED lights for plant growth?

To use LED lights for plant growth, make sure you use the right colors and intensity of light. Plants need different colors of light for different stages of growth. For example, blue light promotes vegetative growth, while red light promotes flowering. It's important to know what colors of light your plants need during each growth stage so you can choose the right LED lamps.

In addition, you should keep in mind that plants also need rest, even when it comes to light. This means that you should not leave the lights on 24 hours a day. Most plants need at least six hours of darkness per day to stay healthy. You can use timers to switch the LED lights on and off at the right times.

Another important factor to keep in mind when using LED lights for plant growth is the distance between the lights and the plants. If the lights are too close to the plants, this can lead to burning of the leaves. On the other hand, if the lights are too far away, the plants will not get enough light. It is therefore important to find the right distance between the lamps and the plants and to maintain this distance throughout the entire growth period.

Finally, you need to keep the LED lights clean. Dust and dirt can reduce the light output of the lamps, meaning your plants do not receive enough light. Clean the lamps regularly with a soft cloth to achieve the best results.


Light is essential for plant growth and LED lamps offer many advantages over traditional light sources. By using the correct colors and intensity of light, maintaining distance between the lights and the plants, and keeping the lights clean, you can get the best results when using LED lights for plant growth. With the help of LED lights, you can grow plants all year round, regardless of the weather outside, and ensure healthy and happy plants.

These blogs provide concise information about growing and related topics. They are intended as an overview and are not a substitute for detailed instructions and explanations found in "DR GROWING: The Basics of Growing". This manual is currently in development and will contain more detailed information to assist in the breeding process.

Our blog series are designed as educational tools, but every growing environment is unique, and individual results may vary. Growing cannabis may be illegal in certain areas, so make sure you know the laws and regulations in your area. For specific and comprehensive guidance, we recommend using "DR KWEEK" as soon as it is available.

Please note: growing cannabis may be illegal in your country or region. Make sure you are aware of the laws and regulations before you start growing. The information contained in this blog is for educational purposes only and is not a substitute for professional advice. Always comply with applicable laws and regulations and contact local authorities if you have any questions.

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