They are not doing what they are supposed to do and they must be punished. Ive got 4 afghani x northern lights clones that I took about 2 months ago and they look the same as when I took them as in zero new growth the funny thing is every other clipping I took is already 3ft tall, even more strange to me is the fact that they have plenty of root mass underneath by all logic they should be doing fine I dont get it they look as if they were plucked off the mother yesterday. Sucks I really liked that high it seemed like a good pain killer when I smoked it. Any thoughts or suggestions on what could cause this?

Thanks
WYT