Hello, i hope we can find the reason or collect some more ideas. Thank you for helping :)

Shit genetics.......nothing more, nothing less. Buy seeds from a better breeder next time.

Was athe pant healthy? then, it was genetics.

bad genitics. nothing else to it. Other basic stressers can make this worse but if the plant is going hermi over basic stress and not crazy stress its just bad genitics. Don't grow it out again or do grow that brand if its mutipule ones from them.

Hey there it’s pretty common to have small pollen sacs grow on lower parts of the plant when you grow feminized seeds. To make fem seeds that have to take a female plant and spray it with sts and get fem pollen to pollinate another female when they do this some of the progeny will have pollen sacs. Especially if who ever made the seeds did t test them to make sure there isn’t a lot of this happening in the progeny. Also I know when your soil ph is off it can cause pollen sacs aswell Also cutting off branch’s and fan leaves to early durring flower can cause stress and pollen sacs aswell Also stress in general like to much light and extreme over watering causing root problems can cause pollen sacs

Having 50% hermie in preflowers twice sounds a lot like a genetic instability in that plant.

Hey growmie,hard to say without any photos or a diary, but if you’re seeing a few nanners show up around week 3 of flower, and this isn’t the first time, then it’s probably genetic. Sure, stress like light leaks or temp swings can cause herms too, but that mostly shows up randomly or later in flower. If it’s happening at the same time again, that sounds like something to do with the plant. You can still ride it out if they’re not going wild ,just pluck what you see and keep a close eye. But yeah, I wouldn’t run clones from that one again. Hope that helps🤞🍀❤️