Have grow it before (but DP version so stop reading now if you want), hydro....I agree with owd...6 weeks is a pipe dream.
I let mine go 63 days.
Expect a big stretch at 12/12! Also needs alot of lateral space, I found it branches alot.
Yield- well it's all relative, but small I guess. I got ~5/6 oz with a 400w
Light feeder.
I know in the cannabible the flo pic is
really purple...I had one purple tinged plant out of the four. It was the lowest yielder and least potent

I seem to remember on another (oft demonized) site other peeps found the more green pheno (juicy fruit thai?) more potent. I also read (on another defunct site) that DJ shorts version was far removed from his original flo vintage and that DP's was nearer to the 'original'. I may have dreamt this though
Whatever, it's a mighty fine smoke for sure imo