The only time I made seeds on purpose, the males sprang up and began to bud out in the grow tent. The females were just starting to show signs of being female. I kept the dried male and it's pollen a week or two, and it worked.
My question came, when I read a thread about a hermi accident wondering how long and what lengths to go to so no future pollinations.
Most of the replies were sort of, wipe it down with water and don't worry about it, thought maybe it was fairly short lived.
Getting ready to do some regular seeds, so got to wondering.
Bubba