Like Rusty said, its not a good indicator by hair
but if you absolutely don't want to get a microscope you can do it when 80-95% of the hairs are red/orange/brown
Revanche21 Reviewed by Revanche21 on . when is the right time too harvest? most of the plants have 1/3 of red hairs. some more developed than others. when is the best time too harvest? Rating: 5