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After over 10 years of no statistically significant temperature increase that could possibly be attributed to man-made warming, after the thousands of emails from Climategate I and Climategate II showing collusion and corruption at the very top of the man-made warming collaborations, after the conclusion of the UN IPCC that natural influences on climate will dominate for the next 20 to 30 years and the complete and absolute failure of any model or calculation to be correct over 25 is insane to continue to suggest that man-made carbon dioxide is warming the earth by anything but a miniscule unthreatening amount.

I seem to be one of the few who has not changed zones. I'm still in 5b.

Wow, long time in the making. So glad this has come out. Yup, still in 9b. Thanks for sharing.


We changed from 6a to 6b - so nothing really changes, I'm still delusional about what will survive here.

My area was previously in a tiny little finger of 7a stuck in the middle of 7b, so I'm not surprised to get reassigned to 7b. Quite frankly, unless you're trying to grow really tropical plants here, the limiting factor is August, not the occasional cold night.

I'm still a very unreliable 8b. Travis county is a very iffy spot that 3 different zones can seriously affect...I'll continue to wing it and stick mainly with Texas-trialed cultivars and natives.

Hmmm..being that I am in a suburb of Buffalo...I guess mine changed...

In Spokane WA, I went from a 5b to a 6a. Because of lost plants I've been buying plants rated 4 and below the past few years, and I think I'll stick to that!! Averages are averages and it seems my garden has a colder micro-climate.

I wonder if this is any better than Sunset zone maps for western gardeners?? We have always relied on Sunset in the nursery industry here in California.

I think most in the west prefer Sunset. But growers use USDA--or at least the labels do--so Sunset users need to know USDA.

Could never get a definitive answer before - 9A or 9B ? Seemed like I was right on the borderline. Now I know I'm in 9A, but it doesn't seem right since avocados are supposed to grow in 9A, but I know better (my experience & that of friends). Meh. I'll keep doing what I've been doing. It's survival of the fittest in my garden anyway.

This is pointless for California. The Sunset zone map is much better for us but my fathers garden in northern NJ switched from 6b to 7a.

Went for 7a to 7b ... but couldn't be more on the border without the color changing on our property!

Here in Chicago we are still 5b. I kind of expected to move to 6a, there are so many signs of the winters getting milder (though also snowier, if that's a word). For instance, my snowdrops are about to bloom, something that has never happened before late February. And animals that used to hibernate no longer do so (I know because I'm trying to catch a raccoon that has moved in under my porch landing.)

Under the old map, I lived in zone 6 and worked in zone 7. The new map painted all of Long Island as 7a -- but based on my observations, the 6 and 7 designation seemed more accurate. I'll keep planting the way I always have. Cheers!

I went from 5B to 6A. But for the past few years, based on the behavior/survival of my plants, I have been gardening as if I lived in zone 6. My recent success with borderline plants suggests that the shift "south" has been underway for some time.

Since we havent seen any significant warming for a decade, wouldn't going from a 2 decade average to a 3 decade average actually magnify the effects of global warming instead of reduce them? Instead of a warm decade and a cool decade you would be averaging 2 warm decades and 1 cool decade.

I always wonder, how do nurseries use the USDA zones?

What I mean to say is, do nurseries label plants zone 6 that can THRIVE in zone 6 (down to -10F)? Or do they label plants z. 6 that can survive one night -10?

That is the information that would be more helpful to me as a gardener.

As it is, I will continue to only plant perennials that are hardy to z. 4-5 as you never know when we'll get a winter that drops to -12. I don't want to lose all my plants due to one winter of freakishly cold temps.

I'm back in 4b, where I've been regardless of what the USDA thought. I do have warmer winters overall than 10-20 years ago but those periods of extreme cold, which is what the map covers, are enough to kill plants meant for zones 5 and up.

Totally ignores micro climates while suggesting all any non-gardener can just enter their zip code, buy something, it dies they blame the garden shop............"I am in zone 6A after all"..........not telling the store the following........low spot facing a blustery north west breeze at bottom of slop where cold air drains to.


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