advanced lighting

Hey guys, this might be a total noob question (I'm only first-year in Hort), but: If cannabis is a critical night-length plant, would I be able to give my baby a long daylight 13h+ for extra photosynthesis, and still let her flower in twelve hours of darkness per cycle? I tired looking it...

Thank you for clicking onto my thread, I hope that it will prove to be interesting for you. I am growing in a 2 part mixture following the recommendations and recipe provided by SubCool a few years back. My base soil is a 3:1 mixture of a common Hardware Store Organic soil and a very rich...