New federal gardening map reflects warmer low temperatures

Wednesday, January 25, 2012 | 1:29 p.m. CST; updated 3:57 p.m. CST, Wednesday, January 25, 2012

WASHINGTON — Warmer temperatures are affecting gardens across the nation. The government's colorful map of planting zones, most often seen on the back of seed packets, is changing, illustrating a hotter 21st century.

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