I've done 3 grows now, but still haven't found a definitive answer. I am using 4 T5 24" florescent blue spectrum bulbs on 24/0 light. I have heard anywhere from 4 weeks of veg up to 3 months. I know that the longer I wait, more branches will be grown. But if the plant is doing real good, and I have 12 inter-nodes (in just 4 weeks from germination), is that enough time & growth to be fruitful? And will the main colas be as large if I wait or if I start flower after another week or two? Growing Bubba Kush (Bubble Gum & Afghan Kush) and they are absolutely beautiful. HUGE wide leaves and drinking a gallon of nute/water in just 3 days with only two plants in a medium of coco noir (coconut husks) in a self watering wicking system. Give this old Marine some feedback please--ThanksMmmmmmmm Ganja gooooooooood.