Just do what I did in your situation, many times: walk.around and asking random people who appear likely to know. Have some balls, who cares if they dont know Where to find it and tell you so in an offemsive manner. Just move on. You'll find them, it just might take some work.
Don't drop cash to strangers, make them bring the goods to you. It's not like your incapable of finding people to do certain things with. I mean, damn, you're not dumb. I've lived in China, various part of Canada, Kenya, Egypt, and have visited many others. Never has it taken me more than one day of walking around and fstrategically asking the Right people, the likely candidates, where to find some green in town. Done, simple as that, a day quest to find Shiva's plant. And you meet great people to interact with, ideally, people with which to form friendships.
If I could do it in a day in Egypt (well, for amazing hash, admittedly, anyway. Pot was harder to find.), then you can damn well do it in your own country.
I'll post my full strategies later sometime, hopefully others will post some interesting approaches.