[yinyang]

I have 3 plants, 2 of em have been growing nicely but 1 of them has stopped growing completely. I know northern lights stay small and stocky but still...not this small and stocky. Growing conditions have been good too, the only thing i could think that could cause this is lack of N...which is not the issue as its growing in soil with worm castings and ive been properly feeding it.

so what else could cause this lack of growth?