I think bc makes it easier to find good quality shit...since you can walk into a shop and choose from 30+ strains, but yeah of course good weed is grown everywhere.
You can utilize good growing techniques anywhere!
even i didn't have that good of connections in bc until i found out about this shop...even in the netherlands it can be hard to get real organic shit, but because this place is owned by a hippie lady, and she knows all the growers theres a good amount of organic stuff.
but yeah anything you can grow here, you can grow in mexico too.
Infact I would venture to say that the MAJORITY of weed GROWN in BC is worse or equal than most places, because here a lot of the stuff (especially export) is just hydroponic force grown beaster shit, which im not all too fond of.