Most of the time it is bad growers. If growing with feminized seeds, this means seeds come from a herm plant. Coming from a guy who has spent weeks pulling nanners and nuts of a haze plant to make it to harvest one time. Just throw everything associated with that one plant away. Check for light leaks or any other heavy stresses in flower. And try again.

Doesvthis mean, if you get a banner, that plant and all clones will have it too?

I’ve gotten new seeds that every plant from the batch nannered. I guess that’s a bad breeder?