every strain has a flower time - example 8 week harvest time - OK does that mean harvest the plant the 1st day of week 8 or the middle of or the end of week 8 / I know one useing a loupe or use trichomes (80% amber) or pistals (80% amber) end of week 8 works for me, Yea theere are a lot of variblaes the grower, enviroment, water, ect many years ago I did harvest on the 1st day of harvest week (many years ago)