I was talking to a person with a lot of credibility. He says once a plant gets root bound that flowering starts. That's why some of his OUTDOOR plants were 3 months ahead of others.
Not so sure this not possible. The Sannies strain Madonna when root bound will almost appear like it is autoflowering even before the light cut off. This has been discussed on opengrow. t6
Funny you should say that. I have a bunch of Sannies KillaQueen X Blue Hammer clones hanging out in the tray too long. They are all budding even under 18/6. Once I put them out I have no doubt they will veg, but it's interesting that they appear to be flowering ATM. Maybe being root bound in the cubes/tray is doing it??
My blue dreams bunch up there nodes kinda like flowering but no buds, they do this under any stress not just rootbound.