Makes sense to me Senor, I've watched growers on here veg indoors and then move them out in the spring for years with great success.
As far as indoor or outdoor being harder I think they both present their own set of challanges. I however have never had the ability to grow out a plant outdoors so I try not to speak as an authority on it. I do feel that over the last 10 years I've developed a pretty good understanding of plant growth.
Sadly I won't be able to do any experiments outside any time soon. I am quite certain if I put a mature well vegged plant and a clone of that same plant outside to flower, that the well vegged plant WILL yield more and become a much larger plant. I am also certain that it WILL NOT take longer to flower then the clone will. That was my point in all this.
My Cindy99 perhaps, the mother plant is a 5 month old clone of the last mother that was about 9 months old from the original seed mother, my point only being that its well matured and has been very stable. If I put that mother plant outside right now, and one of the clones that has only had roots for 2 weeks. You are fooling yourself if you think the mother plant won't become 10x larger then the clone and produce much higher yields.
The only way I see it taking a plant longer to flower (which was the original question I posed simply to see what sort of explanation was given for such a claim) is if the grower were to drastically shock the plant in some way. Taking it from a longer light cycle to a shorter and causing it to begin to flower and then reveg, or a drastic climatic change which just shocked the plant directly.
OTHERWISE I believe that the fact that growers around the world preveg plants indoors, and not just marijuana plants, proves that it IS beneficial to the plants. You just have to be a competent grower and understand how plants work.
