this aint true at all some plants will show nanners but wont have pollen, in other cases you can pluck the nanners off.
it takes time for seeds to produce and you can cut down on the spead of pollen by shuting fans down and speading
plant out so they dont touch each other, either way you can slow it down if your close to the end of you cycle. IF!!
your a couple weeks in and get them you might want to get a new strain cus thats way to early to have to manage
it and a hidden nanner will have time to seed the hole crop. get a good green light and run it at lights off the nanner
will almost glow and be easy to see. but to answer your Q it all depends on stress and strain