HansGoatanswered grow question 9 months ago High bro, she is nice and frosty!
There are only 2 ways to tell if a plant is ready for harvest. The first method is the best method by far and this is looking at the trichomes with a x60 pocket microscope. The pocket microscopes are really cheap. And when you zoom in on the trichomes you want 80% of the trichomes to be a milky white colour. This is the ideal time to harvest your cannabis.
The second method is a good indicator but less precisely as the first method. This is looking at the pistils (hairs). When 90% from the pistils is brown it is time for harvest.
Enjoy your harvest buddy!