Autos not flowering in 15 weeks

They sprouted Feb 20. There was a day it two where it got cold but that was really early in the grow and it didn’t seem to affect itn except for maybe pushing harvest later? My concern is that the pistils are already turning… I really am flying blind. Someone told me to harvest that they are done.

@ChittyChittyBangin Any ideas? I have more pictures as I kept a journal of the grow.

Show me a close up of your top cola. Can you get a good zoom on trichomes? @MMWhite

I see very few if any white pistils. You are in the window to harvest. What you are looking for as far as trichomes will be on the buds themselves, you cant judge by the ones.on yhe leaves.