How to tell when to harvest??? I think I have a few more weeks on two.

Just wondering what you thought, as this is my first Grow.

What strain is it and how many days has it been in flower? Most growers will look at the trichomes to determine when to harvest. Here is an article I wrote on it: https://www.mrgrowit.com/single-post/2017/05/28/When-To-Harvest-Your-Cannabis-Plant