Which cannabis plants are ready for harvest quickly?

Which cannabis plants are quickly ready for harvest, where most cannabis plants still have between 10-12 weeks to reach full development, you can already harvest cannabis seeds that are quickly ready for harvest with approximately 6-8 weeks. Handy if you don't want to wait too long before smoking or if the time you have is limited.

 4,80
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,20
 5,40
 5,40
 6,20
 90,00
 90,00