Early flowering

I live in the Midwest. Purchased seeds online from overseas. Two strains, Gorilla Glue and Bruce Banger. Long story short - my plant labels were removed (not by me) so I don't know which of the strains I'm posting about. Ok...so it's now mid August and I planted 2nd week in June in my greenhouse. This one (see attached) is showing signs of flowering and it's not even 6 inches tall. Yes, newbie here to this particular plant growing. Wondering if this is normal? My 6 other plants are taller and they're getting tall (one just hit 12") but these 6 are not showing signs of flowering. Odd to me because they're all growing in the same greenhouse/conditions. I started with 10, lost 3 early when my misting system glitched one really hot day - but 7 survived and are looking good now. Just not sure what to think about this one nor do I know anything (well, kinda sorta) about when I should actually harvest. Any helpful thoughts and advice is greatly appreciated

It looks like it started on a 12/12 light schedule from seed.

or its an autoflower! They flower with any light schedule.

If it is an auto I never seen one flower that fast and that small

Please don't judge but I don't recall if the Gorilla or Bruce that I purchased we're auto or not. Can't say I know the plus or minus of autos. Still have sooooo much to learn about this plant but it seems odd that this one is so small and flowering. I am not using any fertilizer, the soil is Happy Frog, pH at 6.5ish area...all 10 seeds I started with were tap soaked for 18 hours and went straight to soil, tap root placed 1/4" down with tweezers. Of my 7 remaining, this one is the shortest and has the smallest leaves...and already has a very strong aroma.

No judging here. It’s true that autos will flower regardless of light schedule, but the plant looks really small. And happy frog has an NPK ratio of 5-7-3, so there is nutrients being fed. I don’t think there’s anything wrong with what you’re doing though. But the plants are outside, and if there isn’t at least 18 hours of direct sunlike, it could stunt the growth a bit.

Dontjudgeme said:

No judging here. It’s true that autos will flower regardless of light schedule, but the plant looks really small. And happy frog has an NPK ratio of 5-7-3, so there is nutrients being fed. I don’t think there’s anything wrong with what you’re doing though. But the plants are outside, and if there isn’t at least 18 hours of direct sunlike, it could stunt the growth a bit.

Click to expand...

If that plant is 30+ days old it’s tiny even if it’s a photo.

I think this is just a goofry auto... pics of the others, OP?

I really appreciate the feedback and everyone breaking off the time!

So I have like 6 strains so different all sprouted and grown identically and my GDP pheno is showing signs of flower development well into the two week mark I’m just now noticing it for the first time and it has me all tripped out.
They are photo period seeds how could this be any leads would be appreciated,18/6vegging under SF 2000, conditions are ideally stable.