AS the other grower said I would wait for visable roots too before planting them as this will make the veg process a hell of alot quicker also it take anywhere from 7-21 days to root a cutting if your using somekind of root hormone then you can get that down to around a week but that is only very rarely and you must have your nutrients locked in also rooting can be slowed by either too much or too little water so make sure your watering just enough to be moist but not enough to be drowning and then water them when dry this should speed up the process :)