Things happen to a plant if it's stressed. When you go from veg to flower... You have induced a stress that will trigger flower production. 18/6 won't do it. 16/8 and 14/10 have ill affects on Jack Herer. It'll flower when you ain't wantin' it to. Thats not an auto flower either.. The higher ratio of sativa versus indica is the reason behind that. It's used to the longer days before flowering. Most sativas are that way..

Ga.