Durban Poison? Grandaddy Purple? Meat Breath? We go deep into the cannabis industry to find out how weed names are created—and how you know if this bud’s for you.

I grew up smoking cannabisor pot, as I called it until about 20 minutes agocrouching in a fetid little nook between a dumpster and a stack of tires at the neighborhood Texaco station, a place that al…