The biggest factor in determining when to flip to 12/12 is grow space available. Expect your plants to double and sometimes triple in size during the first weeks of 12/12.

Taking that into account, then you can size up your grow area and determine when the right time to switch is for your current situation.
GetThisOrDie Reviewed by GetThisOrDie on . When should i flower? I started it a little over a month ago, shes about 8 inches tall. Its either bubba kush or deep purp. I am wondering when i should triger it to flower? (12/12) this is my first grow and just want to get roughly an oz/oz and a half Rating: 5