Darkness

[SimonPi]

I was wondering, how does cannabis grow and flower outdoors in nature when there is never total darkness? Personally I have grown nice buds in my garden with lots of moonlight, or does the moon not count as light?

[Rwise]

That light has be at an intensity and frequency, to wake them up, moon light is not enuf even though I have seen nights lite up like day, and days so dark you cant see (storms).

[click]

I was wondering the same thing. There are lots of anecdotal statements in the various forums that the grow room must be absolutely light tight - even a LED on a wall wart can prevent triggering flowering. However, moonlight is much brighter than a single led. Furthermore, I looked at the spectrum of moonlight (see image) since, from what I've read 666nm (Ph) red and 705-740nm (Pfr) far red are the primary frequency the plant triggers off. Moonlight is actually skewed toward the red so a large portion of that light we see in moonlight is in the right range that the cannabis Phytochromes trigger from. There must be more going on...

[Jebidiah]

I think sunrise/sunset duration factor in there somewhere too. It takes a while to get light and dark outside where it’s just a matter of seconds in the tent.