Growing Zones in Mexico?

Is there any equivalent to the USDA climate zones for Mexico? If not, 
any other source that would help define what grows where?  I have 
some isolated knowledge from travel and from knowing about the "cloud 
forest" area, also some plant specific information, mostly about 
where certain salvia come from. But it would sure be nice to have a 
more comprehensive guide.

Thanks,
Carol Moholt
-- 

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