When the trichomes start turning mostly amber, THC begins to degrade, and the plant begins to die, eventually the flowers will fall off...

If you can't get a microscope then you'll just have to guess. If you bought the seeds from a seed bank, they usually provide an estimate for finishing times, but this also depends on your growing conditions. For example, growing with CFL's will require a couple more weeks of flowering time compared to HID lights.
bigtopsfinn Reviewed by bigtopsfinn on . Harvest Time!!!!!Help from experts!!?? Hi growers all over the worls.... I think my ladys are ready for Harvest....but how i will be sure of it??? i see red pistils everywhere after flashing some pistils turn dark brown.... i see clearly with my eyes the olitttle white diamond thinks on it and its alot but on of the tops is not ready!!! Should i harvest the lower ones or they will get a little bigger in yeld if i let the ladys one month more ?? or i wll destroy it if i leave one month more??? thx ((Sorry for my englifh i Rating: 5