A scientific look on when you should harvest your cannabis plants by looking at the flowering cycle week by week for plant size, trichome development, and lab results.
This Plant Grow Log: https://www.youtube.com/watch?v=lIa3eGqFNXA
Testing the CBD Content of a Hemp Grow Week by Week: https://www.youtube.com/watch?v=yEaM8lP9Ihk