So this is kinda a dumb question, but what what purpose of hairs? Becides telling you it's time to crop, I don't know why I don't know this, I've been smoking for ever, any ways just thought id ask
They are the tricromes. There will some debate on it and you really need a microscope to tell. But as they go from clear to milky to dark it tells you when to harvest. So as the hairs darken you are getting closer.