Categories
BLOG

green light cannabis

Please verify you are a human

Access to this page has been denied because we believe you are using automation tools to browse the website.

This may happen as a result of the following:

  • Javascript is disabled or blocked by an extension (ad blockers for example)
  • Your browser does not support cookies

Please make sure that Javascript and cookies are enabled on your browser and that you are not blocking them from loading.

Reference ID: #22798c00-3975-11eb-a407-3f3fc8795ced

Please verify you are a human Access to this page has been denied because we believe you are using automation tools to browse the website. This may happen as a result of the following:

Green light in grow room?

MacLeven
Member
Well-Known Member
BigSkyBudTHC
Active Member
DawgMountain
Active Member
stonner2k
Active Member
Ionix
Member
AlteredEgo
Active Member

Yes, because the green in the case of coated glass is not reflective, it is a filter. it filters out all other colors, that is why we see it as green. the plants look green, because they reflect green, but use other color spectrum for life processes.

it has been field proven for years, that most any green lighting will not effect the plants during sleep, and i have read lab reports that say a plant cannot see green at all.

Keefers26
Active Member

This is insane. PLANTS STILL USE LIGHT FROM THE GREEN PART OF THE SPECTRUM! Please please just read a tiny little bit about photosynthesis and how light works and not just repeat things you’ve heard.

Any light is still photon energy interacting with the plant. I’m not here to say anything about positive or negative effects, and neither should anybody who says they have seen no negative effects from a green light, but how can they be SO sure. I’m just saying that there is clearly no way there are zero effects from using a green light. Simply put if the idea is NO light, then your green light is interfering with that idea. The idea of a specific green is even more insane. are your plants the exact same shade of green all over?

This is photosynthesis:
Carbon dioxide + electron donor + light energy → carbohydrate + oxidized electron donor

Plants absorb light primarily using the pigment chlorophyll, which is the reason that most plants have a green color. Besides chlorophyll, plants also use pigments such as carotenes and xanthophylls.

I would obviously try my best to not let any light at all upon my plants during the dark period of the flowering stage, and I certainly would not feel safe or comfortable with any ‘green’ light shining about.

Georgie13
Member
newbie9
Active Member

This is insane. PLANTS STILL USE LIGHT FROM THE GREEN PART OF THE SPECTRUM! Please please just read a tiny little bit about photosynthesis and how light works and not just repeat things you’ve heard.

Any light is still photon energy interacting with the plant. I’m not here to say anything about positive or negative effects, and neither should anybody who says they have seen no negative effects from a green light, but how can they be SO sure. I’m just saying that there is clearly no way there are zero effects from using a green light. Simply put if the idea is NO light, then your green light is interfering with that idea. The idea of a specific green is even more insane. are your plants the exact same shade of green all over?

This is photosynthesis:
Carbon dioxide + electron donor + light energy → carbohydrate + oxidized electron donor

Plants absorb light primarily using the pigment chlorophyll, which is the reason that most plants have a green color. Besides chlorophyll, plants also use pigments such as carotenes and xanthophylls.

I would obviously try my best to not let any light at all upon my plants during the dark period of the flowering stage, and I certainly would not feel safe or comfortable with any ‘green’ light shining about.

sixstring2112
Well-Known Member
blackandgreyrainbow
Member
xxENOCHxx
Member
bigboybuds
Well-Known Member
southsacboy916
Well-Known Member
TooRare2Die
Active Member

Please don’t use any green bulb guys those are no good for your rooms.
The green lights need to be true green light. Meaning it needs to be l.e.d light. They sell them at most of your local grow shops.. a party bulb isn’t true green light.. its a painted bulb or colored in a green film the light will still be yellow if u peel it back.

memeandsammy
New Member
memeandsammy
New Member
fearnoevil
Well-Known Member

I realize this is an old thread, but I found it using the Google, which means any newb can too and so BECAUSE it is extremely IMPORTANT that good information is passed on and bad information is stomped out wherever it’s found, let’s set the record straight ONCE AND FOR ALL.

First off, Keefers26 is an idiot (sorry can’t be kind to people who talk out their ass as if they KNOW something is factual, when to the contrary ALL the evidence and existing science state otherwise). He and others who constantly say they “believe X is true”, but based on nothing more than their own uninformed opinions (and without even bothering to use the Google to fact check their beliefs) are usually the source of SOOO much misinformation, it’s sad AND misleading to those who don’t know any better. Alright, now down to the nitty gritty,

QUESTION: CAN YOU USE A GREEN LIGHT IN YOUR GROW ROOM AT NIGHT?

ANSWER: YES. PERIOD, END OF REPORT!

Now I could go into all the science, but this is KNOWN information that any experienced horticulturist or botanist can tell you, and it’s already been shared in this post by Prot3us1 here: https://www.rollitup.org/t/green-light-in-grow-room.11892/page-2#post-3892425

But the jist is this: CANNABIS PLANTS DO NOT USE LIGHT IN THE GREEN WAVELENGTH/SPECTRUM. NONE. NADA. ZILCH. This means that it is 100% okay to use a green light in your grow room during the dark periods without fear of doing any harm. And to refute TooRare2Die’s statement, NO IT DOES NOT MATTER if you use green LED, or green CFL or a green painted incandescent bulb, AS LONG AS THE LIGHT EMITTED IS GREEN THAT IS WHAT IS IMPORTANT. That the light behind the dye or paint is white DOES NOT MATTER, only what color is projected. However that said, the danger with a painted bulb is that some are not painted well and may be too thinly painted (especially near the socket end) and any scratch is going to create a leak of white light that may be too insignificant for you to see, but the plants will, so LED’s definitely have that advantage.

And to reiterate, a cannabis plant APPEARS green to the human eye EXACTLY because it is reflecting light in the green spectrum while absorbing all the others in the visible spectrum of light. This reflection indicates that the plants are NOT using this wavelength so in essence green light is INVISIBLE to cannabis plants. This also explains why we see colors. For instance blue dye isn’t actually blue – a particular blue dye simply reflects all the blue light (whatever shade it is) that is within the full spectrum of the lighting available, which is why under HPS lighting, with it’s limited red-shifted spectrum, your blue shirt doesn’t look so blue ;?D

And let’s dispel a few more myths while we’re at it. CANNABIS PLANTS ARE NOT HUMANS, so we should try not to anthropomorphize them by saying things like “sleeping” or “waking” or “disturbing” them. While it may be convenient to use these terms, it can lead to some incorrect thinking as to how plants actually grow and function.

It is perfectly okay to work on your plants during the dark period as well, and sometimes absolutely necessary or preferred. This includes applying foliar treatments, trimming leaves, killing pests, what have you, and if, like myself, you have ever had to work a swing shift, there may be days or weeks when it’s the only time you can get anything done. So don’t worry, be happy, and use green lights whenever you need to to work on your girls (lol, alright a little bit of humanizing our green friends is fine, including giving them plenty of TLC ;?).

hyroot
Well-Known Member

I realize this is an old thread, but I found it using the Google, which means any newb can too and so BECAUSE it is extremely IMPORTANT that good information is passed on and bad information is stomped out wherever it’s found, let’s set the record straight ONCE AND FOR ALL.

First off, Keefers26 is an idiot (sorry can’t be kind to people who talk out their ass as if they KNOW something is factual, when to the contrary ALL the evidence and existing science state otherwise). He and others who constantly say they “believe X is true”, but based on nothing more than their own uninformed opinions (and without even bothering to use the Google to fact check their beliefs) are usually the source of SOOO much misinformation, it’s sad AND misleading to those who don’t know any better. Alright, now down to the nitty gritty,

QUESTION: CAN YOU USE A GREEN LIGHT IN YOUR GROW ROOM AT NIGHT?

ANSWER: YES. PERIOD, END OF REPORT!

Now I could go into all the science, but this is KNOWN information that any experienced horticulturist or botanist can tell you, and it’s already been shared in this post by Prot3us1 here: https://www.rollitup.org/t/green-light-in-grow-room.11892/page-2#post-3892425

But the jist is this: CANNABIS PLANTS DO NOT USE LIGHT IN THE GREEN WAVELENGTH/SPECTRUM. NONE. NADA. ZILCH. This means that it is 100% okay to use a green light in your grow room during the dark periods without fear of doing any harm. And to refute TooRare2Die’s statement, NO IT DOES NOT MATTER if you use green LED, or green CFL or a green painted incandescent bulb, AS LONG AS THE LIGHT EMITTED IS GREEN THAT IS WHAT IS IMPORTANT. That the light behind the dye or paint is white DOES NOT MATTER, only what color is projected. However that said, the danger with a painted bulb is that some are not painted well and may be too thinly painted (especially near the socket end) and any scratch is going to create a leak of white light that may be too insignificant for you to see, but the plants will, so LED’s definitely have that advantage.

And to reiterate, a cannabis plant APPEARS green to the human eye EXACTLY because it is reflecting light in the green spectrum while absorbing all the others in the visible spectrum of light. This reflection indicates that the plants are NOT using this wavelength so in essence green light is INVISIBLE to cannabis plants. This also explains why we see colors. For instance blue dye isn’t actually blue – a particular blue dye simply reflects all the blue light (whatever shade it is) that is within the full spectrum of the lighting available, which is why under HPS lighting, with it’s limited red-shifted spectrum, your blue shirt doesn’t look so blue ;?D

And let’s dispel a few more myths while we’re at it. CANNABIS PLANTS ARE NOT HUMANS, so we should try not to anthropomorphize them by saying things like “sleeping” or “waking” or “disturbing” them. While it may be convenient to use these terms, it can lead to some incorrect thinking as to how plants actually grow and function.

It is perfectly okay to work on your plants during the dark period as well, and sometimes absolutely necessary or preferred. This includes applying foliar treatments, trimming leaves, killing pests, what have you, and if, like myself, you have ever had to work a swing shift, there may be days or weeks when it’s the only time you can get anything done. So don’t worry, be happy, and use green lights whenever you need to to work on your girls (lol, alright a little bit of humanizing our green friends is fine, including giving them plenty of TLC ;?).

plants do absorb green light. Green light helps pigments absorb more wave lengths of light in other regions. Keefer 26 was actually correct. Check my earlier post in this thread. I’ll post the link to a study from Oxford University again. Next time read the whole thread.
I bet you get a few seeds from each plant and say its due to stress. Its the . stress caused by using green light during their sleep cycle.

I've Seen Low wattage Green CFL's in Multiple Growrooms, And has No (Noticeable) Effect, on the plants when Not using and when the Do, Certainly no Negative… ]]>