A plant stays in vegetative state if your provide it with more than 14 hours of light a day. Aproximately. I think.

When you decrease the light cycle, the plant starts to flower, because this is how it happens in nature. As winter approaches, days get shorter (more darktime), and plants bloom.

There's debate as to wether it's the "less than 14 hours of light" that causes flowering, or is it "increasing dark-periods" that cause the flowering. I'm a newb, so I don't know. But, 12/12 = flowering.

Best,

-turtle420
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turtle420 Reviewed by turtle420 on . My First Post! Question about flowering... OK, I've done a fair amount of reading over the last few years, but here's something I just started wondering: Most growers will veg anywhere from 18 to 24 hours a day, right? So if a plant has been getting 24 hours of light everyday, will it still flower at 12/12? As I understand it, MJ flowers since it "knows" that it will be dying soon with the coming winter, right? So does the full 24 hours of sun early in its life somehow trick the plant into flowering earlier.......with, say, 14 hours Rating: 5