"Just check for the pistils on the buds(white hairs) until half them turn orange or brown"

Actually to see if a plant is ready to be harvested you look at the trichomes which are the little "golf balls on a tee" that will eventually cover the pistils (white hairs) and the leaves coming out of the flowers. You have to look at them with about a 30X scope and when you see that the little 'golf ball' is cloudy to a little bit amber colored hack it down, dry, cure and enjoy.