Calling all pros-Does a 36 hour dark period between vegging and flowering force....

PBFseedco.

Well-Known Member
If anything Id say the opposite.. darkness increases stretching.. unless thats what u were saying..
Ya. The point is that the plant will stretch during this 24hr but will be so hungry for light that it wont stretch as much during 12/12.
 

jawbrodt

Well-Known Member
Light is what makes them grow, so i really don't see the point in 3 days of darkness. I can't see the logic in depriving them of 36 hours of what they love the most...light, when they'll go into bloom within 3-5 days of the switch to 12/12, anyway. Plus, that's about as unnatural as it gets, so it has to introduce some level of stress, which isn't worth the risk, IMO, especially when there's no clear benefit in doing it. I suppose there's a possibility that it will reduce stretch, a little,(less than an inch, I'm sure) but that's because they're not freakin growing. :lol: WTH are you people thinking?LOL :razz:

IMO, if your plants are taking a long time to show preflowers, you had some trouble in veg, whether it be insufficient lighting, nute burn, overwatering, etc....or have some strain that takes a long time to mature. If you started from seed with a 8-10 week strain, and they are growing nice and healthy, you should start seeing preflowers while they are still in veg, after 4-5 weeks(6 weeks max). If not, at least they should have alternating nodes by then, which means they're mature enough to go to 12/12, and will show preflowers within the first week. If not, pick another strain. :razz:

The only way i can see that "3 days of darkness" POSSIBLY speeding things up, is if you started from seed and are putting them into bloom at a very young age, 3 weeks or less, and even then...it's iffy.

...and that's my 99 cents. :lol:
 

ganjaluvr

Well-Known Member
Light is what makes them grow, so i really don't see the point in 3 days of darkness. I can't see the logic in depriving them of 36 hours of what they love the most...light, when they'll go into bloom within 3-5 days of the switch to 12/12, anyway. Plus, that's about as unnatural as it gets, so it has to introduce some level of stress, which isn't worth the risk, IMO, especially when there's no clear benefit in doing it. I suppose there's a possibility that it will reduce stretch, a little,(less than an inch, I'm sure) but that's because they're not freakin growing. :lol: WTH are you people thinking?LOL :razz:

IMO, if your plants are taking a long time to show preflowers, you had some trouble in veg, whether it be insufficient lighting, nute burn, overwatering, etc....or have some strain that takes a long time to mature. If you started from seed with a 8-10 week strain, and they are growing nice and healthy, you should start seeing preflowers while they are still in veg, after 4-5 weeks(6 weeks max). If not, at least they should have alternating nodes by then, which means they're mature enough to go to 12/12, and will show preflowers within the first week. If not, pick another strain. :razz:

The only way i can see that "3 days of darkness" POSSIBLY speeding things up, is if you started from seed and are putting them into bloom at a very young age, 3 weeks or less, and even then...it's iffy.

...and that's my 99 cents. :lol:


yeah, or.. you could just extend the night cycle a little bit. Try for example.. well its what I do usually. But for example, instead of 12/12.. try giving an extra hour or maybe even two hours to the dark time. for example.. 11/13 11hrs ON : 13hrs OFF I usually start my flowering cycles at something other than 12/12. Usually.. I'll go with the 11/13 schedule.. and believe it or not.. the extra hour or two of darkness can actually help a plant by giving it more time to trigger the flowering hormones.. and get them really kicking in.

hope that helped too. Good luck. ;)

peace.
 

darkdestruction420

Well-Known Member
Light is what makes them grow, so i really don't see the point in 3 days of darkness. I can't see the logic in depriving them of 36 hours of what they love the most...light, when they'll go into bloom within 3-5 days of the switch to 12/12, anyway. Plus, that's about as unnatural as it gets, so it has to introduce some level of stress, which isn't worth the risk, IMO, especially when there's no clear benefit in doing it. I suppose there's a possibility that it will reduce stretch, a little,(less than an inch, I'm sure) but that's because they're not freakin growing. :lol: WTH are you people thinking?LOL :razz:

IMO, if your plants are taking a long time to show preflowers, you had some trouble in veg, whether it be insufficient lighting, nute burn, overwatering, etc....or have some strain that takes a long time to mature. If you started from seed with a 8-10 week strain, and they are growing nice and healthy, you should start seeing preflowers while they are still in veg, after 4-5 weeks(6 weeks max). If not, at least they should have alternating nodes by then, which means they're mature enough to go to 12/12, and will show preflowers within the first week. If not, pick another strain. :razz:

The only way i can see that "3 days of darkness" POSSIBLY speeding things up, is if you started from seed and are putting them into bloom at a very young age, 3 weeks or less, and even then...it's iffy.

...and that's my 99 cents. :lol:
I still cant +rep you, but this post deserves it, alot. Like 5 +reps, lol
 

cowell

Well-Known Member
If you're just trying to prove a point and get people's opinion.. I'm not going to read through everyone else telling you the same thing...

Nothing with plants is "immediate"... so the answer is no.. takes about 5 days to a week at least, if you aren't showing pre-flowers in veg first...
 

KlosetKing

Well-Known Member
well i don't want to feed an argument or anything but Ive been looking into this a bit, and its like discussing just about any theory, idea, or even seedbank on this site. some people swear by it, some people say its absolute bullshit and there is just no way it can possibly work no matter what.

i am taking the middle road on this one. in my eyes, it makes sense. i am no botanist, but it does seem to me that the extra time in the dark can help build those hormones up and POTENTIALLY speed the process up. whether it does or not, i would assume there are far too many variables to really ever know (you know, since iam not a scientist or botanist). even controlled settings are a joke to test this under, you can have the 10 plants all the same strain, hell taken out of the same mother intentionally bred, so you have 100% guarantee they are all the exact same strain, and every single one of those plants will have major differences in their growth, even if it may not appear that way. clones? still wont work. i doubt each clone you make will have the same branches, same node make up, exact same height, etc. so root expansion, water usage, stretch speeds, these things will all vary, even if just on a microscopic level.

all iam getting at is, i would chalk this one up to a ritual/tradition/belief. am i going to try it? yes. not because i think it will work, not because i need it to work, but because i decided to change the hours that were allocated for the 'day' for my plants. it just so happens that 33 hours of dark got me right where i wanted to be to start my 12/12, so i said why not!

/flame on
 

shadywolf

Member
if ne of you have ur plants stretching during lights out get ur light leaks plugged up. a plant will not stretch if it has no light to stretch toward.as for 3 days of lights out cant really say it would help ne more than 48 hours which iv done before no b4 switching to 10/14 to help force flowering in sogs and scrogs.

viva la bubbloution
 

RichED

Well-Known Member
there is nothing you can do to provoke flowering untill plant has matured

however once she has matured and if you do the dark thing at switch it will encoureage flower quicker instead of maybe two weeks to show might be only 10 days

will encourage flower not work magic

good luck 1love
 

shadywolf

Member
there is nothing you can do to provoke flowering untill plant has matured

however once she has matured and if you do the dark thing at switch it will encoureage flower quicker instead of maybe two weeks to show might be only 10 days

will encourage flower not work magic

good luck 1love
what your saying is not correct most of us that grow force the plants into flower before they are mature. switching the lights to 12/12 is forcing flowering.
its part of the reason you get quicker harvest times indoors than outdoors because we force the plant to flower before its ready.at most on scrog or sog i will veg a cutting for 3 weeks before switching to 12/12 or 10/14 in my case. there is no way that plant is mature so im forcing it into flower.
 
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