i've had it since november, and ironically, NO undergrowth. weird aint it. i dont know what i did wrong since longifolia can survive pretty much in any condition it grows in. but yeah, no undergrowth. hahahaha. i just recently bought a new plug, and we'll see how it does.
ironic since the quelchii is a beast....
How are you growing it? I would try changing things up a bit... Maybe try a new soil mix. There are several clones out there with slightly different preferences.