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neonrider

USDA Hardiness map outdated?

neonrider
13 years ago

This winter (2010/2011) (I live in Zone 8A) so far we did not have anything below 17F (couple of nights only) and the rest was 20F or above (nights only), which I consider mostly zone 9A weather with two nights into z8b, so basically where I live is about 20 miles south of the z7b "border" yet we are having mainly z8b weather most of the time, while temps below 15F are rare here. Wonder if the USDA zone maps are outdated by now. I know it is not global warming, because I looked up historical data and temperatures here 20-30 years ago used to be even warmer than now.

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