climate zones

**L* M* <l*@earthlink.net>**

The USDA climate zone grid is useless unless you want to know how  
cold it has gotten somewhere. For plants, it's irrelevant. For  
example, I used to live in the Siskiyou mountains of suthwestern  
Oregon. It's in USDA zone 8. So is most of the Gulf coast. The  
vegetation in those places is very different.

Jeff mentions the Sunset Western Garden book, which breaks the west  
into 24 different zones. The Sunset National Garden Book divides the  
country into 45 different zones, and is both very useful and highly  
accurate. Every US garden writer should have one and use it.

Larry
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