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2. Grow light - Wikipedia

   en.wikipedia.org/wiki/Grow_light

   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).

3. The 8 Best Indoor Grow Lights to Help Your Plants ... - AOL

   www.aol.com/lifestyle/8-best-indoor-grow-lights...

   4. Root Farm All-Purpose LED Grow Light. Best for Starting Seeds. Starting plants from seed lets you get a jumpstart on the growing season, so your plants are ready to go in the ground as soon as ...

4. 10 Grow Lights That Actually Work to Help Your Plants Thrive

   www.aol.com/20-stylish-grow-lights-plant...

   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 ...

5. Will Euonymus Grow Indoors Year-Round? How to Keep This ... - AOL

   www.aol.com/euonymus-grow-indoors-round-keep...

   If your euonymus is not getting enough light, a grow light on a timer can help it stay vigorous and healthy. Related: The 11 Best Grow Lights to Help Your Plants Thrive, Based on Testing. Soil and ...

6. High-intensity discharge lamp - Wikipedia

   en.wikipedia.org/wiki/High-intensity_discharge_lamp

   High-intensity discharge lamps (HID lamps) are a type of electrical gas-discharge lamp which produces light by means of an electric arc between tungsten electrodes housed inside a translucent or transparent fused quartz or fused alumina arc tube. [1] This tube is filled with noble gas and often also contains suitable metal or metal salts.

7. Photosynthetic efficiency - Wikipedia

   en.wikipedia.org/wiki/Photosynthetic_efficiency

   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 ...