you need a 30x or better pocket microscope ,
if your in the u.s =10.00 from most radio shacks . need to look at the tricomes = frost , and when you see them starting to turn amber . they start out clear turn milky white and eventually amber . ppl. chose to harvest at different times to obtain a certain type of buzz also . 50/50 clear/milky = mellower buzz , 50/50 milky/amber = couch lok buzz-imobilized lol .
peace
crispi