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  Re: What are the criteria for "Zones"?
From: "George R Stilwell, Jr." grsjr at juno.com> on 2002.05.22 at 03:50:47(8843)
Ron,

Zones have only to do with the mean low temperature. There is a new index
to do with heat
being dffered by the USDA. To answer your question, go to

http://www.aroid.org/horticulture/zonemap/europe.html

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