hey how goes it.this is my first solo grow as well but with the research ive been doing it seems every source says the same thing.they will start to flower once you decide to switch them to a 12/12.technically and someone may correct me if im wrong,without the 12/12 to simulate the later days of the year they will stay in veg as long as u keep them on a long light cycle.Currently im on day 24 of my veg cycle 4 strains jilly bean,jack herer,and jack the ripper then i have a mystery plant thats about 3 feet tall running one 600w hps through the whole cycle 18/4 until about day 30-40.they will triple in size so keep that in mind when flowering. good luck! p.s. u might wanna pick up marijuana horticulture the indoor/outdoor medical growers bible by jorge cervantes, great book with a lotta knowledge some is a little out-dated but for a strong base of what you are doing it is a great building block .Now go forth and grow high-grade.lmao