Hi , Im growing top 44 skunk, and now its 3 weeks old. When could i know what sex they are? I need to get it done till the end of september. The flowering is 8 weeks, so, what will hepen if i change the light to 12:12? Second grow, first time with regular seeds. [ame]http://www.youtube.com/watch?v=dodsrgxkP0M[/ame] In video they are just sprayed.
You can switch to 12/12 whenever. Your yield is just affected by a limited veg period. It takes a little longer for the sex to show if the plant hasn't had a full veg. But you should be able to determine sex within 14 days.