Yes.
You can basically do it even outside if you cover a branch with a garbage bag for example and introduce it to a 12/12 cycle it will eventually flower if it is mature.
Yes sir i'm doing that with my Barneys Farm Blue Cheese. I cover my plant with a garbage can from 700 to 700. these pictures are 60 days from seed one week into flowering.
Is it true that once the flowering cycle has reached a certain stage it is irreversable and therefore you no longer need to cover the plant for 12 hrs? I've heard this applies after about 4 weeks of flowering.
Nope..that may result in a hermi..or a very stressed plant..But yeah artificially chaning the light cycle works..I heard of a guy that did a stealth,garbage can,SCROG...he just covered the garbage can when it was time..and sure enough it started flowering..
read my blog...sgt. kahneohe is 3 wks. from her first harvest....with a heavy duty trash bag(pics).I kept her in flower, to start my daisy chain of harvests, so I spend less time paying $80/quarter.her sister is back in veg' til next week. and no it didn't hermaph!
I know a guy who has automated his depo with battery-powered water timers--first one opens and fills a 5-gal bucket and the weight pulls a black plastic covered frame over his cold frame..the buckets have small holes in them so they will drain out over the 12 hrs...then 12 hrs later another timer fills another bucket which pulls the cover off...works great...he had to mess with it awhile to get it right but it's slick now...