While urban rooftop farm­ing is a grow­ing trend around the world, Montreal’s own Lufa Farms are push­ing the bar high­er. Their flag­ship hydro­pon­ic farm, built on top of an old indus­tri­al build­ing in the north of Mon­tre­al, shows that urban farm­ing is pos­si­ble on a large scale, that it is both sus­tain­able and com­mer­cial, that it can use pre-exist­ing urban struc­tures and that healthy fresh food may soon be com­ing to a rooftop near you.