m0useanswered grow question 3 years ago When you are cloning cannabis their are a few things to keep in mind.
The tip or top growths of the plant do not close all that well because they have different hormones in them vs the bottom of the plant where clones are normally taken from.
When you do take clones you want to do it before you feed the plant its weekly feeding.
You only want to take clones from established healthy plants that can take the loss of a few branches. With out the plant betting in good health this can leave it open to stress and disease.
Topping refers to taking just the tip or sometimes a small node off the top of plant, normally less then a finger nails length. Clones will need more room to root and become successful.
I have once taken off the entire top 3 nods on a more mature plant and it took them forever to root and establish themselves. This was done because the part of the plant got damaged in some LST training. not because I wanted clones.
Side note, if you plant has had not sun for two weeks it needs some sun and time to recover from that dark period.
Overall its not best to clone the tips, and you want your plant to be bigger before taking clones from the lower growth.
Best Of Luck and Happy Growing!