Okay this year i grew a few plants at 12/12 from seed so i could sex them so i dont gotta fool around with males. I just put the plant outside about 2 weeks ago after it showed first signs of female. Right now it has hairs growing still but the leaves are twisting and i beleive its trying to reveg. The plants about a foot tall. My question is how long does it take a plant to go back to veg? couple weeks ?
If you put it outdoors only just after it showed it's sex, then yeah a couple weeks and it'll stop budding. If any buds start to form, pick them off (thats what I do) so that the plant doesn't continue to build on them, instead it redirects all of the energy back towards leaf/root growth again, rather than bud growth.
"This female received 18hrs of light daily. A mistake made it receive a 12/12 day/night schedule for three days, which induced flowering. The grower put it back on an 18/6 day/night photoperiod. The plant took 6 weeks to resume normal vegetative growth. The light stress also caused leaves to grow in circles!" photo caption p.106 Cervantes, J. (2006). Marijuana Horticulture: The Indoor/Outdoor Medical Grower's Bible. Van Patten Publishing
Six weeks ? Wow. Mine took about three weeks to show new vegetative growth after I had flowered for a couple weeks to show sex.
Oh it will stress it, what you're doing is topping the plant. So you'll end up getting two colas out of the budsites anyway.