2 ms·

Tons! Even mushrooms are mostly grown in one county in the US https://modernfarmer.com/2014/05/welcome-mushroom-country-population-nearly-half-u-s-mushrooms/ ht

• mc32 8y ago
  Interesting, yet I don't think they are hemmed in by geography but rather by happenstance. That's to say, the industry sprouted there and has had a positive feedback loop and bloomed, but it doesn't seem to me that it could not happen in Oregon, or some other place --though of course not every place in the US but several regions anyhow. I mean the GP was talking about crops which appeared to be restricted to small geographies due to special circumstances and could not be easily replicated elsewhere.