Where is… Bethel hardiness

The Greenhouse Effect: Global warming’s impact on your garden.

By Constance Casey, Posted Wednesday, Feb. 28, 2007

Lilac bushes in New England have pretty steadily been blooming earlier every year for the past 30 years. One way some gardeners have begun to think about shorter winters is to say, “Hey, great, I live in Ohio [or wherever, north of the Mason-Dixon Line] and now I can grow some camellias, maybe a fig tree.” This is, frankly, nuts. Be careful what you wish for. Kudzu is creeping north, poison ivy is growing more toxic on its diet of extra carbon dioxide, and allergy season lasts longer.

….The Arbor Day Foundation map, using the USDA Hardiness Zone Map of 1990 as a starting point, tracked some dramatic changes from then to 2006…. Both maps divide the United States into zones by shared average low temperatures. Bands of different colors run from a very cold Zone 1 (Fairbanks, Alaska) to a tropical Zone 11 (Honolulu).

[more ...]

• http://www.slate.com/id/2160830/fr/rss/

Evidently, the hardiness zone maps are changing too. The map for zip code 99559 is

This is better

• http://www.arborday.org/media/zones_akhi.cfm

Look at their animated map of changes in the past decade

• http://www.arborday.org/media/mapchanges.cfm

Here’s the earlier USDA hardiness zones

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