i live next to a hemp farm and they usually cut it down well b4 it flowers ive taklen the odd plant and tried to feed it in different ways to get a lil bit of thc increase but to no avail it is one long stem with few big leaves, i belive they use it for fibers, its tall with a fat old stem like celery, my mates once built a hover and got a blowtourch made a resin collector by burning the hemp, then after a couple of kilo they smoked the resin lol lots a rare headaches that day.