I'm quite aware of harvesting by trich color, thanks for the info, tho. By new growth, I meant new pistils. The last few weeks would be for the swelling you speak of, and yes, you can tell by the hairs as a general referance. You don't need to be Bill Nye the science guy to know when to harvest cannabis. By the time the hairs are 50/50 white/brown and the swelling stops your trichomes will be milky with a few ambers anyway. I'll skip the loupe and go with experience. Peace.