Yes you can, but be careful when watering them.
Excess dirt can lead to over/under watering problems, and you'll need you watch your nute balance closer in flower.
You could also still have a problem with root binding, unless you're talking about a REALLY big pot, and then I'd be really careful to water just the center at first, gradually more as the plant gets bigger, and not too much or too little.
Re potting also gives you an opportunity to find and fix root problems before they are un-fixable.
psteve Reviewed by psteve on . bad if never repot? Hello folks, in a few weeks i am starting my first serious proyect with aprox 10 afgaan from nirvana, with a 400watts hid :D... what you think guys if after the germinating progress is completed, i put all of them in the definitive pot at first, never to repot, how the plant will be? i am just curious because in the mother nature this never happend, the repot lol... Rating: 5