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Global warming is hitting not just home, but garden. The color-coded map of planting zones often seen on the back of seed packets is being updated by the government, illustrating a hotter 21st century.
By Seth Borenstein
AP Science Writer
January 25, 2012
It’s the first time since 1990 that the U.S. Department of Agriculture has revised the official guide for the nation’s 80 million gardeners, and much has changed. Nearly entire states, such as Ohio, Nebraska and Texas, are in warmer zones.
The new guide, unveiled Wednesday at the National Arboretum, arrives just as many home gardeners are receiving their seed catalogs and dreaming of lush flower beds in the spring.
It reflects a new reality: The coldest day of the year isn’t as cold as it used to be, so some plants and trees can now survive farther north.