I have about 10 Blue Venom in flower about 7 weeks. They look great but 2 did nothing.. They look great but didnt flower. Any ideas ?? Will they eventually flower or should I trash them. They are definately not males or herms ????
try leaving some ripe banana peels laying on the top of the pots, the ethylene gas they give off might be enough to triger blooming.
maybe giving them a longer dark period would also help.