Mile high city: Inside Denver’s billion-dollar marijuana industry

The grow room is modest – maybe 600 sq ft – but it’s one of many at this marijuana farming facility on the outskirts of Denver, Colorado. Apart from a narrow path to let the grower get to his crop, every inch of floor-space is filled with plants. I can’t tell my indicas from my sativas, but I know cannabis well enough from the clichés: the thick, earthy scent; the unmistakably-shaped leaves. Peering closer, I can see fat buds encrusted with the potent THC crystals that make pot pot.