Is dark period really full dark night?

[Star Dog]

So lets say when sun goes down beyond horizon (sunset), there is still light, we can see, its not complete darkness. So in months like September (https://www.timeanddate.com/sun/usa/sunrise?month=9) there is 12h and 30m light during the day and 9 hours of complete darkness which means there are 3 hours and 30 minutes of "diffuse" light which you are telling me that plant use as "dark period"?

I expect plants are picking up on other environmental cues like temperatures, changes in light hours and light spectrum, also physiological changes.

 

[Dank Bongula]

So it solves my problem.
Lets say i have plants in a room with window. There is nothing else, just plants, lights (LEDs) for growing, no other light source (little led shining from wifi, table lamp, etc.).
If I set growing lights for 12/12 light schedule, and leave window uncovered (diffuse light from outside gets into room) - I should be okay? Since in coming months like September, cannabis normally flowers, because days are shorter right?

It would depend on when your 12/12 schedule is set for and which direction the window is facing but yes, I could see that working to flower your plant if your 12/12 was set to sunrise and sunset.

 

[Lalalando]

circadian rhythm -that’s why. Plants outside are different than indoors. We trick indoor plants. Outdoor with the changing of seasoning the plants are connected to the rythym. Check it out

That is awesome! Something new to learn!

 

[Lalalando]

It would depend on when your 12/12 schedule is set for and which direction the window is facing but yes, I could see that working to flower your plant if your 12/12 was set to sunrise and sunset.

Exactly! Let's say light ON would be at 7am and lights of at 7pm,then the diffuse light from window can do the transmission to dark period!

 

[Lalalando]

Obviously there is still light in the sky, there is a transitional period...and the way your eyes utilize that light is different from how a plant does....once that light drops below a certain level (I'm sure you could research light threshold in cannabis plants and find out exactly), probably nautical twilight, the intensity is too weak and the plants can begin their dark period...then the opposite takes place in the morning. The whole point of switching to 12/12 is to quicken that transitional period in the plant artificially and immediately put it into darkness. Virtually everything in regards to growing inside is going to be different than nature. That is the point. To control every aspect. If you want to set your lights to do this gradual transitional change and prolong your grow, go right ahead. The hard 12/12 just eliminates this transition - but if you have LEDs in there, or it is near a window with street lights or light from under a door coming though, that intensity is too great for the plant, even though it looks weak to you....you can see evidence of this on this site all the time. Someone is always posting a pic of their plant in a tent with LEDs causing it to reveg.

Sunlight intensity outdoors is different from a desk lamp intensity indoors obviously, but just because twilight is weak for a plant does not mean a desk lamp is weak for a plant as well.

Hey!
1) yes there probably is some light trash hold that scientists would need to search, very true!
2) 12/12 to skip transmission - yes I got it
3)looks like it is still safer to place them in tent since I have them in veg for 3 months already
Tahnks!

 

[Dank Bongula]

Exactly! Let's say light ON would be at 7am and lights of at 7pm,then the diffuse light from window can do the transmission to dark period!

It should work if that is your only concern however the tent isn't just to provide a solid dark period...it also helps you control environmental conditions that otherwise would not be suitable to grow in.

 

[lusidghost]

It is funny how we slam on the lights and then cut them back off into instant darkness. That would be a weird planet to live on.

 

[Alter Jean]

It is funny how we slam on the lights and then cut them back off into instant darkness. That would be a weird planet to live on.

Blowing passed the entire thread because the last post is fantastic.
Have you seen Dark City?

 

[lusidghost]

Blowing passed the entire thread because the last post is fantastic.
Have you seen Dark City?

No I have not. Is it good?

 

[Lalalando]

It is funny how we slam on the lights and then cut them back off into instant darkness. That would be a weird planet to live on.

I wonder if plants experience some kind of shock when they are at early age from these on and off swaps

 

[Alter Jean]

No I have not. Is it good?

It's pretty good bro you should get stoned and watch it

I wonder if plants experience some kind of shock when they are at early age from these on and off swaps

Plants live in Dog Years. So by the time they are 1 week old, they are really 15 years old in human years.
At least that's how I was learned it in the 6th grade

 

[lusidghost]

I wonder if plants experience some kind of shock when they are at early age from these on and off swaps

My plants are on a 24hr light cycle in veg, so they are hella confused by my simulated physics.

 

[ISK]

I think you should go back to 6th grade and redo it because you’re just typing diarrhea at this point.

If he takes grade 6 again, that means he has grade 12 in the Jethro Bodine High School

 

[GanjaJack]

Apparently no one has seen "Are you smarter than a 5th grader?"

5th graders absolutely OWNING adults........ While people condemn our education system.

Mostly people who are ignorant as fuck.

 

[Alter Jean]

Apparently no one has seen "Are you smarter than a 5th grader?"

5th graders absolutely OWNING adults........ While people condemn our education system.

Mostly people who are ignorant as fuck.

Is your dark period seriously dark, though?

Mine is dark a Nietzsche

 

[twentyeight.threefive]

I wonder if plants experience some kind of shock when they are at early age from these on and off swaps

No it doesn't shock them.

 

[twentyeight.threefive]

Apparently no one has seen "Are you smarter than a 5th grader?"

5th graders absolutely OWNING adults........ While people condemn our education system.

Mostly people who are ignorant as fuck.

Coming from the guy that says plants don't use green light spectrum, this is funny.

 

[GanjaJack]

Coming from the guy that says plants don't use green light spectrum, this is funny.

I also said that this was all stuff that I read years ago so was recalling off of memory. While you Google experts were so quick to dog pile, weren't so quick to lend a hand to the guy though, and in the end YOU didn't help him with his answer... I DID.

Also, I never claimed to be smarter than a 6th grader though did I?

That was on the guy who claimed that our education system was fucked up but couldn't answer his own fucking question, and then all you fucking morons started dog piling because you can't read.

Now go fuck yourself. I don't care how hard, but, go fuck yourself.

 

[twentyeight.threefive]

I also said that this was all stuff that I read years ago so was recalling off of memory. While you Google experts were so quick to dog pile, weren't so quick to lend a hand to the guy though, and in the end YOU didn't help him with his answer... I DID.

Also, I never claimed to be smarter than a 6th grader though did I?

That was on the guy who claimed that our education system was fucked up but couldn't answer his own fucking question, and then all you fucking morons started dog piling because you can't read.

Now go fuck yourself. I don't care how hard, but, go fuck yourself.

Chill out bro. Go smoke some of those mids.

 

[Southernontariogrower]

My photos havent seen a dark night all summer, neighbours have spotlights going all night, thought it might slow them down but are on schedual. If sunlight comes through window just have that at same time as lights are on. Not while off, think your asking for trouble if during dark cycle.