Re: Hardiness and heat zones

**"Daryl" p*@mindspring.com**

> Regarding refinement of the USDA map, I heard last summer that the list
was
> being revised significantly -- has anyone heard of a new USDA map? It was
to
> include more tropical zones and other changes.

Larry,

It's up on the AHS website and, in my opinion, it's a disaster. Not only
does it throw out all but the recent years (1987-2001) of data, but they did
away with the a and b designations. To quote: "The "a" and "b" intra-zone
divisions used on the 1990 map have been dropped, so each zone is broader
and easier to follow as your eye moves westward and the mountains make
climatic gradients more complex. West of the Rocky Mountains, more discrete,
rounded divisions have replaced the crazy tangle of zones that marked the
1990 map"

That's laughable. If adopted, it will be totally useless in my part of the
world.

http://www.ahs.org/publications/usda_hardiness_zone_map.htm

Daryl (Formerly "officially" zone 7a, microclimatically 6b, and now in Zone
8! )

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