Seed zone or placement maps are intended to be a guide to help landowners get seedlings that are suited for their land. This is accomplished by collecting seed from specific areas or from seed orchards that represent that area. Various maps have been developed by government agencies and companies to accomplish this. Keep in mind that these boundaries are not absolute and people do use stock from outside their area. The main thing to keep in mind is the climate such as temperature and rain fall similar to the areas being transferred.
To illustrate this: Northern Douglas County has similar rain and temperature on its northern slopes to the Willamette Valley. Valley stock may be an option for these sites. We will not list all the possible interchanges for seed zones. Just use common sense when considering your options. Hopefully the information provided is helpful in making your selection.
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