afghan and master kush veg time

i have been vegging my plants for quite a while now they r about 60cm tall. i still have quite a bit of height in the grow room so i was just wandering how much height growth i should expect while they r in flower

any help would be greatly appreciated

my afghan landrace stretched less than half of their original height. hope that helps...

Most indica strains seem to double in height during flower. But that's after maybe 5 weeks of flower. More flower time might reduce potential for growth in flower. I would like to see some reliable data on that.