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Posted 3w ago by @Leensha-Lou

Does blue light from a bug-zapper help plants grow?
Tate stays near the stairs. He is very green because I water him with #PothosWater. Zola is also watered with #PothosWater but has so much new growth all the time. Neither of them are yellowing or dying which is wonderful. Zola sits near the bug zapper and has the blue light on her constantly. Is this maybe why she has so much new growth and Tate doesn’t? So @PlantyPlanter and I decided to do an experiment and move them to see if we can make Tate grow better, and to determine if the blue light helps them grow. We will let you all know the outcome after the experiment, while documenting for all of you. But if one of you already knows for a fact that the blue light does in fact help plant growth, please let me know!! #HappyPlants #PlantsMakePeopleHappy #NewGrowth #GrowLights #PothosPack #ScienceWithGreg #PlantCorner #BeforeAndAfter #PlantingOnABudget #PothosWater
Best Answer
Plants’ leaves are green, which means a lot of the wavelengths of β€œwhite” light that reflects off of them is in the middle of the spectrum. This is light they can’t use.

On the other hand, they absorb the rest of the light, and are able to use if for photosynthesis. This is why grow lights often have red and blue or purple leds (or appear violet, if not an led light). Blue light, especially if it’s more indigo than green, would be in the useful spectrum for them!
🀞🏻
I got some grow light bulbs not too long ago and they have a slight blue tint to them so you might be onto something here!
Happy to know that Pothos Water is working out amazing for your plants!! πŸ˜ŠπŸŒΏπŸ’§
I have grow lights that are blue/red led. My plants seem to love it. I do have one full spectrum grown light as well.
@kscape today was the first day I was able to water a few plants with pothos water.
@Leensha-Lou Welcome to Greg as well.
Blue light provides chlorophyll which they need for photosynthesis. It does need to be at the right wavelength so the color helps with certain plants. Any that have white may burn or crisp. Those like the dark velvety textures in the jungle or rainforests need very little since they are usually heavy feeders and have the ability to produce chlorophyll via their structure. I’d love to see how your experiment turns out. I’m looking forward to reading about it!
And welcome to Greg! I see you’re from RI! I grew up in Providence! This is a great community! You’ll love it here!
@FitSedum I promise to keep everyone updated!!!

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