a month!? i was guessing more like a week, but ive 0 experience unlike mcloadie over here
Yes. It takes about a month until the plant is fully back into veg mode. The upside to the long delay is the plant turns into a beast of a bush. I've revegged a couple plants in the past, and the grow, once it reverts, is pretty awesome.
When I'm running regular seeds I take a cut from the original as soon as I can get one, then I sex the cuts to find out if the originals are male or female....then I pull the males and the plants don't stress and I only feed female plants.
That's the way to sex an unknown strain.