I have 6 K2 that have all shown female at around 3 weeks.
I have trained 2 to let the shoots and side branches catch up with the main grow shoot. 1 I fim'd and 1 I left completely alone.
I have mega shoots. The one I left alone its tall massive girth on the stems even the shoot stems. They are probably 1/4-5/16 in diameter. The main stalk is atleast and inch in diameter. They are approx. 51 days old now and I will be giving them to a friend this weekend so he can finish them. I need to make room for my Bogglegum, Nl#5, Nl pure from nirvana. I have take 2 clones from each and all of them have rooted with no problem.