New USDA cold hardiness zone map
I heard that the USDA is supposed to be releasing an updated zone map soon that will utilize temperture data from 1990 to 2009. The more recent official map is the 1990 version of the map which in my opinion is not accurate. There is a 2003 map that the arbor day foundation released but it is not offical and doesnt break down each zone into a and b.
I read that the Bush Administration pulled the 2003 map and did not allow its release because they did not want it to show that the country was warming. The republicans are basically denying that global warming exists.
Does anyone know when the new USDA zone maps are expected to be released?
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Jeremy
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