How many weeks does it take for a male to produce pollen?

I am trying to collect some male pollen for later use, it already has a sack on it, How many weeks into flowering can i expect to get some polin, and what will it be visible when i shake it off into a container? They just got their first sacks and no signs of flower formation.
I want to cross it with my buddies amazing kush genes...

i dont wanna make a new thread to a question that has been asked so BUMP^^^ when can i expect the sacks to burst?

i think you can get pollen at like 3 or 4 weeks

pollen for my strain was rapid 3wks open pod and visable yellow dust be careful its strong shit i got hay fever when handle

ok thanks should i cut em down as soon as i see them let em dry and then burst them if not how long should i wait before i cut em down and burst em?(balls)

uncle ben is who you need he has tech. posted somewere im new so i dont know how to get u to him

3-4 weeks on average depends on the strain