Is the darkness before harvest myth dead

trychrome

trychrome

Well-Known Member
hotrodharley said:
"No matter its sensitivity to day length and darkness (LD, SD, or DN), a plant will not experience growth with fewer than 10 hours of daylight."

LD is Long Day v SD is Short Day. Cannabis is short day except for ruderalis. Nothing frigging happens in the dark with a photoperiod plant eh? Nothing.

Photoperiodism: How Day Length Affects Plant Growth | High Mowing Organic Non-GMO Seeds

If you reside somewhere north of the equator but south of the north pole, you may have noticed the shortening and darkening of our days lately. In fact, the days have been...
www.highmowingseeds.com www.highmowingseeds.com
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Here's a nice companion video to that article. Spells it out quite nicely and really goes in-depth across the board as far as light-cycle, intensity, and dark-period exposure.

 
calvin.m16

calvin.m16

Well-Known Member
I have noticed zero benefit to giving a plant less light in bloom at any stage. I've tried the 11/13 tricks early bloom to get "Faster flowering" but that type of stuff is just providing the plants with less energy in their lifespan. Per Aptus Bible 1 week of a cannabis plants life is the equivalent of 10 years of a human life. If you want your plants final glory days to be in darkness go for it.
 
Derbud420

Derbud420

Well-Known Member
kingzt said:
Just curious if anyone still does this. Things I’ve read is that terps would be better and thc content would be higher since light can potentially diminish both. I did 24 hours darkness twice and didn’t notice much. Some of the white pistils changed color that’s about it. Is 24 hours not long enough or is it a complete myth?
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I play them death metal, then speed metal then sweet leaf loop after loop
 
S

Synchronicity

Well-Known Member
This guy (Ed Rosenthal) may have contributed to the issue many years ago. All I can find is this statement that it is best to harvest after a dark period. He says 1 or 2 days of dark bears looking into but I cant find anyone who specifically states a given number of days or hours in the literature (on the internet).

I may get flogged at dawn on this forum for it - However, I have been giving them 36 hours of dark before harvest which seems to work OK for me. Main idea being that it contributes to increased THC levels and it is a heavy dose of dark compared to 12 hours.

The concensus of this thread looks to be that most think it is not proven............ I got the idea from somewhere years ago but cant recall exactly where since I am older now and more senile.

Ha
 

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Derbud420

Derbud420

Well-Known Member
If it works for you or even if it doesn't and you think it does, it probably doesn't hurt anything. I can't not look at my plants that long, even when they are hanging during initial dry. Maybe guys are not looking at their plants for 2 days and forgot how frosty they were.
 
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Synchronicity

Well-Known Member
I leave them in the dark 36 hrs before I chop them............ Not after. Then they hang for a few days to dry.

that is what I meant.
 
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Synchronicity

Well-Known Member
One thing for sure- the fundamental biology of the plant has remained the same in how it reacts to light cycles. Genetics may play a role also with different strains. It seems human attitude changes along with the technology constantly and that is what puzzles me most at times.......

yo- the more I learn, the less I realize I really know so I am sure no expert by any standard
 
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