big bang auto

growing big bang auto in coco, 7 litre pot plant is 3 ft tall and not flowering after 5 weeks, how long do they take as not done them before, 18 hours of light, thanks
 
they usually show signs of flowering at about 14 days from sprouting ..... if its 3ft and 5 weeks i'd bump the time down to 12/12 ...... sounds like its not gonna fire on its own

shame if its in with other autos?.... as it will need a new home :-(
 
I got a a big b a year ago it was a auto and took 65 days to start to flower it fliping rocked super sweet I took clones but it did auto out your going to get amazing yeild tasty smoke I got a pack of non autos its a get strain
 
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