Sometimes just a rainfall will trun the hairs brown. The hairs tell you nothing about it's maturity. Look at the link given above. It's all about the trichomes.

TGT
Tom Green Thumb Reviewed by Tom Green Thumb on . are these ready to harvest yet? It seems the little hairs on the buds are turning brown, I've heard this is when you want to harvest. Most of the hairs are brown there are a few that are still clear. let me know what you think Rating: 5