From which Oregon locale did the Marionberry cultivar derive its name?

Answer

Marion County, Oregon

The Marionberry received its designation based on the primary growing region identified at the time of its official release. This specific region in Oregon, Marion County, was chosen because the berries thrived there under the particular growing conditions suited to this hybrid. This naming convention tied the cultivar directly to a distinct geographical area known for its agricultural output, even as cultivation spread later.

From which Oregon locale did the Marionberry cultivar derive its name?
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