Just because its possible doesnt mean it is wise to do, you can run into problems but it all depends on how long you sex them. Ive sexed one plant before and was going to ditch it but decided to do an experiment and throw it back into veg. It stalled out and didnt grow for 2 weeks which cant be good. I WOULD HIGHLY NOT RECCOMEND THIS WITH SEEDS, STRESS CAUSES HERMIES!