Purple Kush in Saskatchewan Late harvest?

Hey guys first time growing outdoors. got some purple kush seeds from a buddy and i got em growing nice outdoors in pots, about 2 foot tall. they are two months old ish.
Any ways i am kind of worried that my plants will not be done flowering before winter hits.
The sun changes to 13 / 11 in early sept. will this be enough dark time to induce flowering. would the plants start to flower at 14/12?
it will start to freeze mid october at night at the latest so there is not much time for flowering.
I am not sure on the flowering lengths for the plant either. the seeeds were out of a bag of some chronic purple kush tho.
Any help would be really appreciated.

you should be good. When outside becomes 12/12 they will start to flower. Just check the weather often, if you want them to get that nice purple color you gotta leave em' till right before the first frost. good luck fellow canadian.

Saskatchewan here too. Im also worried mine wont finish on time. This is my first time growing. Got some white widow and it just showed preflowers about a couple days ago.