The color of the pistils tells you nothing about when it will be done, or potency. potency is determined by genetics, and you should get a magnifying glass with 20 - 60X zoom so you can look at your trichomes to determine when to chop it.
Also, you said you bought feminized seeds, then proclaimed that the first 2 were female. Of course they were. THey will ALL be female, lol. You have a chance at hermies (something like 80-20 I believe), but feminized seeds will always be females.
I agree, your incorrect with that.
sorry to burst your bubble my friend.. but you are incorrect.
Just because the seeds are feminized.. doesn't necessarily mean that EVERY SINGLE seed will produce a female plant. The probabilities of them being females.. are much higher than if they would have come from a package of "regular seeds".
But you must think ahead.. and in terms of the environment.. and how they were germinated. There's all kinds of factors that play a major part in rather or not the plant will be a male. What I mean by this, is.. for example.. lets say you germinate two seeds from the pack of feminized beans. So you have two feminized seeds germinating.. and the next day they both crack and spit out their tap-roots. They're ready to plant now.. so you plant them. Now, lets just jump ahead here... lets say its been a few weeks and your ready to sex them.
So you start sexing both plants.. and lets say one turned out to be male. Well, this could be from a slight genetic mishap, or it could be from abuse from the grower.
But my point here is.. with "feminized seeds".. 99.9% of the time.. you'll end up with females. But, if your not careful.. you can get a male or two out of the mix.
Just because they're "feminized" doesnt mean that they're all going to be female.. it just means that they've been "feminized" and have a higher chance of being female.. rather than male.
to make this easier on me.. so I don't have to explain every little detail for you.. just go and google the following question.
"Do feminized mj seeds mean that every seed will be female?" <_-- that way you can see what I'm talking about. Surely someone has explained this somewhere.
Also, for some reason my thoughts are scattered and going crazy right now and I don't have any smoke right now.. so excuse me if what I was trying to explain didn't make much sense. But again, that's why I said to use Google to find your answer.
peace.