Usda Zoning Map - Knowledgebase Question

Ontario, OR
Question by tdcasey
January 25, 2001
Looking at the map on I was unable to determine what zone I would be in - is there a better way - possibly by zip code to determine zone? I just moved here from the midwest and am a new gardener. Thanks.

Answer from NGA
January 25, 2001


There are two ways for you to determine your actual hardiness zone. One is through the following website, and the other is by thumbing through a copy of Sunset Western Garden Book. I'd vote for the book! The publishers have gone to a great deal of trouble to divide growing zones into microclimates, based upon elevation and proximity of bodies of water. Check out a copy at your local library or bookstore. Here's the website:

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