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Posted By: Amaranth Rose II Warming shifts gardeners' maps - 04/26/08 03:43 AM
"Every gardener is familiar with the multicolor U.S. map of climate zones on the back of seed packets. It's the Department of Agriculture's indicator of whether a flower, bush or tree will survive the winters in a given region."

http://www.usatoday.com/weather/climate/2008-04-23-gardening-map_N.htm?csp=34

Climate change is affecting the map used to predict plant survival in the US.
Posted By: samwik Re: Warming shifts gardeners' maps - 04/26/08 07:43 PM
Thanks,
What a neat map tool, dragger.

...and the input data ends in 2005!

They do use the cooler, 1970's as a baseline; but whatever the cause, it seems like a rapid change.
Forests can withstand cool fluctuations much better than warm excursions.
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