More specific Hardiness zone global map.

[GottmitAlex]

Here is the Map with more accurate zone specific zone designations than the 2012 Map. 

http://www.plantsdb.gr/en/general-cultivation/hardiness-zones/274-hardiness-zones-map

 

http://www.plantsdb.gr/en/general-cultivation/hardiness-zones/264-hardiness-zones

[Las Palmas Norte]

Interesting ... of note Victoria, BC Canada is rated as zone 9 but Seattle zone 8. Seattle should be given an equal zone 9 rating.

Cheers, Barrie.

[TexasColdHardyPalms]

New orleans and houaton are zone 8 as well. Thats way off.

[smithgn]

Interesting data and it certainly is conservative in its zone designations, which is fine. But I have to point out some errors as they designated Fayetteville, NC as an 8A and Columbia, SC as a 7B. Don't know how they come up with that since Fayetteville has a lower record low as well as a lower average low. Still an interesting perspective but not all correct.

[DavidLee]

This map is incorrect. Most of tropical areas are warmer than zone 11. Some places like Cuba are mostly zone 11 and 12 but Puerto Rico has warmer zones.  

[cm05]

It has NYC as 7a, but it's actually at the upper end of the 7b range. I'm splitting hairs, but those extra degrees can make a difference.

[PalmTreeDude]

True, this map is off, I see it displays area to be cooler than they are. It would be nice to have a more accurate one with the latter ratings (a/b). 

[Sanips]

I still prefer the ones from http://www.plantmaps.com/

[PalmTreeDude]

I prefer the official USDA zone map. Although it could use a few tweaks! For the U.S.