best harvest time???

hey this is my frist grow and im strating to get some buds.. i have some pictures in my gallery. both of my plant are 73 days old and have been on 12/12 lighting for 37 days.. the taller plant seems to be maturing much faster then my shorter plant the taller one has red hairs on the top bud but the lower buds hairs are still white.. how do i know when to harvest?

oh and would it be okay to cut the top bud off or would that slow down or harm the plant?

thanks&peace

most strains need 2 bud for 9-12 weeks and others only need 6 do u know what kind u have ?

i have no idea

then my best advice would be 2 post some pics and maybe a pro could help if u cant post some pics ull have 2 use ur judgement

here are some pictures

Looks like you have a few more weeks before there ready. Why do you want to cut the top off? I wouldn't cut anything just tie it down if height is the issue.

heights not an issue i just wanna try some.. i think im just going to wait though. i can wait a few more weeks

i would say by those pis there about 3 maybe 4 weeks old i would give atleast 6 more weeks