Green Lights And How Lights Effect Your Plants!

[Weaselcracker]

I've been using a green led light when I have to for emergency nighttime work for many years. One strain I grew used to pop out the occasional nanner late in flowering, but I only ever noticed it in that one strain, no others. Never any sign of re vegging or anything like that so I'm going to carry on using the green light when I have to.

 

[skipper11]

So are you saying is that U should use a red light if U have to work in room during lights out?

 

[SonnyJimm]

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When light within a certain spectrum hits the surface of the plants chlorophyll receptors, it prompts a hormone called florigen to be produced.

Another hormone named antiflorigen is produced by flowering plants. The ratio between these two hormones is what causes a plant to flower or not.

In the plants leaves, another chemical named phytochrome that is necessary to react with florigen to produce flowers.

When the phytochrome within the leaves of a plant receive a duration of light that would be considered "short day light" by that exact plant, then the antiflorigen is repressed and the florigen is increased, thus causing the plant to start flowering.

If the duration of light of correct spectrum and intensity is interrupted from a "short day", anywhere within the "dark cycle", it causes the plant to again start producing antiflorigen. The ratio between the florigen and antiflorigen is altered and flowering will decrease or stop.

This switch between ratios of florigen and antiflorigen is stressful to the plant and can cause a sexual reversal from female to male or male to female.

The result in this light hormonal stress is usually seen as Hermaphrodites. The entire plant doesn't change sex, only part of it. It will be the part of the plant that has the largest response to the florigen/antiflorigen ratio alteration.

All flowering plants use this exact system of hormones and ratios in regard to flowering.

The amount of phytochrome within the leaves of a plant determine it's reaction to light. Some plants have more, some less. The health of the plant, nutrients and humidity all are factors that determine how much phytochrome exists.

If you take all of this information and relate it to each of your plants, you'll see that in regards to light interrupting a darkness cycle, many factors come into play.

Brief interruptions of low intensity may not be sufficient to cause the florigen/antiflorigen ratio to change enough to change the plants flowering in any visible way. It can however, cause a slowing of flower growth.

The best way to not affect this ratio of florigen/antiflorigen is to leave the flowering room completely dark for the entire darkness cycle. This makes it foolproof.

Any light of sufficient strength to be "seen" by the phytochrome receptors in the leaf will have an effect on the flowering.

Low light levels of the green spectrum may be low enough to NOT be received by the phytochrome receptors in any appreciable amount that would cause a negative alteration of the ratio between the florigen and antiflorigen.

If you have a plant that doesn't react to low level green light, then you've found a winner in the pot growing family. Of course, it may be slowing the flowering to a degree without you noticing without another test group to observe.

Here is a very good article about this subject from Botany Online:
Botany online: Plant Responses - Light - Photoperiodism - Stimulation of Flowering

A plant can NOT CHANGE gender. A plant can show both male and female sex but it CAN NOT CHANGE GENDER. you can't make a flower disappear from thin air and pollen sacks appear in its place. It will show BOTH SEXES. I really wish people would educate themselves before educating others.

 

[Weaselcracker]

I'm all for education, but the fact that I've been using a green led flashlight to work in my flowering room in the dark, for over five years now, among many different strains and phenos, and haven't had any problems, is enough education in this area for me. I only care whether or not it's safe to work in the dark with this light around my flowering plants.

 

[SonnyJimm]

Sorry. I wasn't speaking about the light, I was just correcting misinformation in the original post about gender and cannabis. Did I post it in the wrong place?...

 

[Weaselcracker]

You're right. This thread seems to have a bunch of misinformation. I wasn't replying to your post- just some of the 'info' claiming that green lights will cause hermies and revegging. We were each just giving our 2c worth trying to correct some of it.

 

[mikgrowmeds]

I just think like a plant and I love the moon light think about that!

 

[tim92109]

I've found a lot I like in this forum. Some I didn't. I don't know if my situation is different than the green filtered white light. I just created an app that is about as simple as can be... open it and the entire screen is exactly 0,255,0 in RGB. Which means 0% red, 100% green, and 0% blue. I purposely didn't put any ads in it or any button, text, etc. because I didn't want to change the perfect full screen exact green spectrum. I was gonna charge, but decided to make it free. If anyone has any kind of equipment and are curious as to the spectrum or seeing it, you can download it on the Play Store (didn't release for iPHones yet)... Hydroponics Green Screen Light – Android Apps on Google Play

 

[CutieGrow420]

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[CutieGrow420]

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A plant can NOT CHANGE gender. A plant can show both male and female sex but it CAN NOT CHANGE GENDER. you can't make a flower disappear from thin air and pollen sacks appear in its place. It will show BOTH SEXES. I really wish people would educate themselves before educating others.

Thank you......Finally someone else says it!!!!!!! I believe that's misinformation put out by the seed companies to justify charging so much for feminized seeds which quite often turn out to be hermie or worst yet full on male ........ this way they blame the consumer rather then themselves! Genetics don't change from environmental factors!

Sent from my SM-G935W8 using 420 Magazine Mobile App

 

[tim92109]

Thank you so much for this! Tim92109

Sent from my SM-G935W8 using 420 Magazine Mobile App

You're very welcome! The app has gotten over 7000 downloads now in around a year. And a good rating. Probably because there's no ads - a rarity in apps, but I couldn't add ads if I wanted unless I made them black. Like I said, though, it was for personal use and figured I might as well throw it on the app store where it will help others and build a good reputation there at the same time.

 

[CutieGrow420]

I've found a lot I like in this forum. Some I didn't. I don't know if my situation is different than the green filtered white light. I just created an app that is about as simple as can be... open it and the entire screen is exactly 0,255,0 in RGB. Which means 0% red, 100% green, and 0% blue. I purposely didn't put any ads in it or any button, text, etc. because I didn't want to change the perfect full screen exact green spectrum. I was gonna charge, but decided to make it free. If anyone has any kind of equipment and are curious as to the spectrum or seeing it, you can download it on the Play Store (didn't release for iPHones yet)... Hydroponics Green Screen Light – Android Apps on Google Play

Thank you so much for this....... really helped me out in a pinch!!!!!!

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[CutieGrow420]

You're very welcome! The app has gotten over 7000 downloads now in around a year. And a good rating. Probably because there's no ads - a rarity in apps, but I couldn't add ads if I wanted unless I made them black. Like I said, though, it was for personal use and figured I might as well throw it on the app store where it will help others and build a good reputation there at the same time.

Makes sense .....well it really helped me out in a pinch ..... awesome idea ...and I really appreciate it!

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[Tim potter]

i didnt think i would have to quote myself again guys. I took biology of higher plants last semester in university. green light (make sure it is heavily filtered to be safe) wont hurt your plants in dark period of flower cycle.

oohh

 

[Huktonponics]

I've found a lot I like in this forum. Some I didn't. I don't know if my situation is different than the green filtered white light. I just created an app that is about as simple as can be... open it and the entire screen is exactly 0,255,0 in RGB. Which means 0% red, 100% green, and 0% blue. I purposely didn't put any ads in it or any button, text, etc. because I didn't want to change the perfect full screen exact green spectrum. I was gonna charge, but decided to make it free. If anyone has any kind of equipment and are curious as to the spectrum or seeing it, you can download it on the Play Store (didn't release for iPHones yet)... Hydroponics Green Screen Light – Android Apps on Google Play

hahaha Ive been using this app for ages, its pretty nifty man, thanks a lot, and found it hilarious that i came across it mentioned in this post after all this time !