yan402answered grow question 11d ago Hey growmie, seeing pistils at 21 days in autos isn’t that unusual, they can start showing early under strong sun and tight genetics. But yeah, I’d say there’s more going on here.
From the pics, that soil looks heavy, zero perlite or visible aeration, which can stunt root growth early on. That can cause the plant to stay small and trigger flowering even faster, since autos are on a timer and stress can make 'em flip quicker.
So it’s not just genetics, probably a mix of heat, compact soil, and early root stress. She still looks healthy enough, so just keep her well-aerated and don’t let the soil stay soggy. You might get a smaller yield, but she’ll finish.
Next run, try adding 30-40% perlite or coco for better airflow. Makes a huge difference for autos.