Quote Originally Posted by mazman1989
when the days get shorter then you will start to see preflowering. maybe at the end of august the day will get shorter. to force it, put a black trash bag over it to give it 12 hours of light this will help to see if its a female.
I read that you can force it to start flowering by giving it a 36 hour dark period. However you cover it up to achieve this is up to you.