its hard to get the answers you want in just a couple of hours,give it patience,friend (the first rule of growing)
can you take a picture of the plant at ground level and not just of the top??
what is the length of time the sun is up?? that will dictate the crossover(unless an auto)
do you know the strain??(so i can research a little for you)
I will say ,its still in veg state(from what i see) and its a great looking plant
Excellent plant! It looks as if you have a standard photoperiod plant. It will not start to flower until it gets 12 hours of dark. The plant thinks the season is ending and goes to flower.
I would read the section on how to grow marijuana. It will have all this info in there.
They are about to go, but not yet. The best indicator, or I should say "way to put it" is that things will get very busy in and around the node area. These guys are still in veg. You will have to get to 12/12 lighting or close to fall if they are outdoors.
Those things are gonna be monsters by the time they do go into flower. They might have hinted at flowering because of longer nights at the beginning of the year. They will get 10-15 feet by the time they do flower in the Fall or the longer nights.