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Can grow lights burn plants? Our guide will discuss the main risks and offer useful tips to ensure your plants thrive under the right light conditions. Let’s read on to learn the secrets of safe growing lights!
The answer is Yes. Grow lights can cause burns because they are positioned too close to your plants. There are different types of grow lights with different light bulbs. We will discuss the most common choices right here to help you determine the best option for your indoor plants.
Many manufacturers and websites wrongly claim that LED grow lights don’t emit any heat, but that’s not true. LED grow lights are not as hot as HID lights when turned on but still produce heat. LED lights are safer for plants in terms of heat. Moreover, one single diode isn’t hot enough to burn plants, even when it touches the leaves for several hours.
Note: Be cautious with large LED grow light setups because numerous small diodes can also burn plants if they hang too close.
Incandescent lights are the traditional type found in most home fixtures. They have a filament to get heated up by electricity. Unfortunately, these bulbs can burn quite hot. Your plants can be burned if you place the lights too close for a prolonged period.
Fluorescent lights and CFLs (Compact Fluorescent Lamps) produce little heat and are unlikely to burn your plants, even if they touch these lights for several hours. Fluorescent grow lights are popular among small indoor growers because they are cost-effective and safe for plants. The low heat emission is also another big plus.
HID lights (High-Intensity Discharge Lamps) are famous for commercial growing. They can reach temperatures of up to 160 degrees and will undoubtedly burn your plants if they are placed too close to the leaves. HID lights have a large design. They look like giant reflectors and are not suitable for growing rooms. Despite their drawbacks, many gardeners choose HID lights for their powerful illumination, especially when growing hydroponics or for commercial purposes.
The distance between these types of grow lights and your plants to avoid burn depends on how much heat the lights produce. For example:
Note: These guidelines just are general; it’s essential to consider the wattage of your lights. You should place higher-wattage lights further away.
You also need to take our 6 tips to prevent light sources from harming your plants:
By balancing the intensity of the light and maintaining an appropriate distance, you can harness the power of grow lights without risking plant burns. Hopefully, this guide has helped you answer the question, “Can grow lights burn plants?”
Now, you can give your home plants the optimal conditions they need to flourish.
Which type of grow light is less likely to burn plants?
Fluorescent lights emit less heat than other types, making them good choices for indoor gardening.
What are signs that the grow lights burn my plants?
Burned plants may display symptoms such as browning, wilting, and discoloration, all of which indicate excessive heat exposure.
Can I leave the grow lights on all day and night?
No. In fact, your plants require some rest time. Hence, it would be best to mimic natural day and night cycles by running grow lights for only 12 to 16 hours a day.