12 hours of darkness

[cosmiccowboy]

will that hurt a plant in veg?

 

[Mr. Greengenes]

No.

 

[gaiusmarius]

1 period of 12 hours of darkness will do no harm, but if you keep that up you will trigger flowering.

 

[cosmiccowboy]

thanks a lot fellers

 

[FreezerBoy]

The hormones that produce flowers are allergic to light. They build at night and are killed during the day UNTIL days start to shorten and nights get longer. Now, hormones survive at the end of the day. Each day more and more survive until, after 2-3 weeks, they hit critical mass and... voìla, flowers.