Quote Originally Posted by Delta9Haze420
You can, however, veg them for a very long time, switch to flower 12/12, then switch back to veg after a harvest or halfway through a harvest (leaving the lower branches alone). .
If you do this, read up on 're-vegging'. You really should only do it once; it takes 3 weeks to a month to fully re-veg a finished female. Then the best thing to do with her is to take cuts. The more you switch photoperiods the more likely you are to produce herms.