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Ficus plant grown under a white LED grow light. A grow light is an electric light that can help plants grow. Grow lights either attempt to provide a light spectrum similar to that of the sun, or to provide a spectrum that is more tailored to the needs of the plants being cultivated (typically a varying combination of red and blue light, which generally appears pink to purple to the human eye).
Here's what you need to know to place grow lights at the right distance, depending on the type of light and the plants you're growing. Related: The 11 Best Grow Lights to Help Your Plants Thrive ...
Most vegetables are full-sun plants that require at least 8 hours of direct light to grow outdoors; however, plants like tomatoes generally need 16-18 hours of bright light to fruit inside ...
In low light environments, many plants will struggle to stay healthy. We tapped testers to find the best grow lights for all your indoor herbs and plants. ... Grow Lights for Indoor Plants ...
Above about 10,000 lux or ~100 watts/square meter the rate no longer increases. Thus, most plants can only use ~10% of full mid-day sunlight intensity. [6] This dramatically reduces average achieved photosynthetic efficiency in fields compared to peak laboratory results. However, real plants (as opposed to laboratory test samples) have many ...
Plants have evolved to require different amounts of light, and lengths of daytime; their growth and development is determined by the amount of light/light intensity that they receive. Control of this may be achieved artificially through the use of fluorescent lights in an indoor setting. Manipulating the amount of light also controls flowering.
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