I agree with DEL. My plant's hairs (pistils) were 70-90% amber after only 3 weeks flowering. Surely the plant was not done growing then.

The most accurate way to tell is by looking at the trichomes under a microscope. When a few of them turn amber from THC degradation, then its time to roll.
smoknjoe Reviewed by smoknjoe on . harvest time? Ok, so started 12/12 cycle two weeks ago today. Preflowers showed 2 days after starting the cycle. There's at least 50 buds, but probably closer to 100, all varying in size. It's under a 400 watt hps. Since this is my first, and my personal stash is virtually gone now, I'm excited to harvest, but I also don't wanna screw myself over in potency and yield. Would it be reasonable to harvest in 1 week (3 weeks flowering total)? I definitely wanna harvest a little early, to achieve a more Rating: 5