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  2. Here you can find out how plants use light to fuel their growth, how they're adapted to different light levels, and how you can make sure your plants are getting the right amount. Feeling the sun on your face is one of life's simple pleasures, but for plants, catching rays is vital for survival.

    • Why Plants Need Light – An ELI5 Explanation
    • How Does Light Affect Plant Growth?
    • The Importance of Light Spectrum
    • How Can Grow Lights Replace Sunlight
    • Some Common Grow Light Options
    • Conclusion

    Photosynthesis is a topic that is done to death in our science classrooms. But unless you are a keen botany enthusiast or someone who pursued higher studies in the field, you probably don’t remember a whole lot about the process. Let’s refresh that memory with a few basic concepts. Asking why plants need light is like asking why we need fire or hea...

    Direction of Growth

    The survival of a plant is entirely dependant on the source of light. In the case of all outdoor plants, the sun is the only source of light. When the first leaves appear on the plant, it will try to grow towards the light source, to ensure that maximum light is received by the leaves for photosynthesis. Some plants take this to its extreme and follow the sun as it traverses the sky in the day. The sunflower is the most famous example of these plants, called heliotropic by botanists. The rest...

    Seasonal Effects

    If there is one disadvantage to sunlight, it is the fact that it is not constant all through the year. The duration and intensity of sunlight received fluctuate with the changing seasons. So plants have adapted to these changing seasons as well. In the summer and spring, with light being plentiful, most plants focus on growth, blooming of flowers, and bearing of fruit. When the light intensity and duration reduces as winters approach, the plants put more emphasis on conserving energy and redu...

    Light is a form of energy that moves as an electromagnetic wave. What we see as visible light is made up of electromagnetic radiation in a specific range of wavelengths. Visible light falls between the wavelengths of 390-700 nanometers. Light in different wavelengths appears as a particular color to the human eye. When you use a prism to scatter th...

    From what we have gathered so far, three major factors regarding light can affect the growth and development of a plant. These are: Intensity:How bright the light is, or how much energy in the form of photons is falling on the leaf. This determines the rate of photosynthesis. The higher the intensity, more photosynthesis occurs in the plant. Durati...

    High-Intensity Discharge (HID) Lights:

    These are special incandescent lights used widely in indoor horticulture. They are power hungry and emit a lot of heat. So you have to be careful when placing them close to the plants. HID lights include High-Pressure Sodium (more red light) & Metal Halide (more blue light) options. Large-scale growing operations use these lights more than small-time hobbyists.

    Fluorescent Lights

    These are less energy intensive and do not emit a lot of heat. They are long-lasting and easier to manage than HID lights as well. But Fluorescent lights are known to emit cooler light at the blue end of the spectrum. So they may not be able to provide complete light that your plants need. If you are growing herbs, these are quite effective. You will find fluorescent lights more often in small home-based grow systems. Many growers tend to mix them with other red-spectrum lights when growing f...

    LEDs

    These are gaining popularity these days, especially among hobbyists. Small, compact, and very energy efficient, they can be set up very close to the plants. But they may not be suitable for large-scale grow operations, as they cannot spread intense light across large areas. But LEDs can be designed to emit either red or blue spectrum wavelengths. And you can put a lot of these small LEDs in a light panel. So you don’t need to mix and match different types of lights when using LEDs. LED grow l...

    Light (and its energy implications) is one of the main limiting factors in hydroponics. The sun is a near limitless source of energy. Replicating it indoors is not easy. But the technology is evolving at a fast pace. We have grow lights that are more energy efficient than ever before. There is no reason not to expect a brighter future for indoor hy...

  3. Jul 21, 2017 · Light directly influences plant growth and flowering by inducing photosynthesis and feeding plants energy. Plants are dependent on light to generate food, induce the growing cycle and allow for healthy development.

  4. Apr 11, 2024 · Plants need light for photosynthesis, providing energy to break water and carbon dioxide into the components needed to fuel growth. Light-related factors like wavelength, duration, and intensity impact growth in different ways, good and bad.

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  5. Jan 30, 2024 · the color of light can have a significant impact on plant growth. Blue light is the most beneficial wavelength for photosynthesis, while red light can help plants to flower and produce fruit. Green light is not as effective for photosynthesis, but it can help to protect plants from damage.

  6. Dazzling lights are causing ecological chaos, disrupting plants' seasonal rhythms and their fragile relationship with pollinators. One summer night in 2014, a group of biologists and ecologists...

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