Dude- calm down... No need to yell.



Quote Originally Posted by michaelpeg
I live in Manitoba canada and i plan on growing some plants indoors until summer. The thing is i dont think the longest daylight time in manitoba even reaches 18 hours (i could be wrong) but anyways would the clones immediately start flowering if i put them outside in early summer and then try to reveg causing a big waste of time?
Ya got a couple things going on here-

First, the whole 18-6 thing is strictly for human convenience.

We're gonna define a variable " F" which will represent the point at which florigen metabolites trigger primary sexual expression.

Plants only care if photoperiod is >F or <F.
( With the caveat that longer photoperiod allows plant to absorb more energy, and therefore store/utilize more carbohydrates. But that's a whole differant process)

Most plants will show an F value right around 14-15 hours. In other words, for most plants, a 16 hour photoperiod will keep them in veg, if there are no other factors hastening sexual expression ( ie environmental stress, autoflowering or early flowering genetics, prior sexual expression or existant reproductive structures).

Are your genetics typical? I have no idea.

Some early varieties will respond to an abrupt shortening of photoperiod by flowering- usually see this when stuff goes from 24/0 veg rooms outside in the early spring- the shorter photoperiod will trip them. You can take advantage of this to pull an early spring crop at the right latitude with the right cultivar. It's also possible to trigger a plant in a 12/12 indoor environment and then finish the flower outside, though this is really only pracical in temperate if moist climates ( yer putting them out right at the end of rainy season.)

So the answer to your question- most likely not. YMMV

Ya might want to look up your day length say March 1st, June1st, Aug 1st, Oct1st... this is info yer really gonna want to have.