Im not new to autoflowers but something rather odd is happening to my recent feminized autos.
They are only a few weeks old about three inches tall, second set of true leaves and theyre already flowering.
I had one a few years back do the same thing... It wasnt faminized and it was growing outside along others that grew normally. It turned into a three inch tall version of a mature plant.
These current ones are in a window, southern exposure.
It is a bit cool in the house and the lights been low/overcast lately.