Manning–Kamna Farm

Washington County, United States

Not open to the public

On private land.

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The Manning–Kamna Farm is a private agricultural property adjacent to Hillsboro in Washington County, Oregon, settled in the 1850s and developed over several decades into a working seed farm. Ten structures built between 1883 and 1930 survive on the site, anchored by a cross-wing western farmhouse in Victorian style completed in 1887. The ensemble—which includes a barn, smokehouse, pumphouse, woodshed, and privy—was added to the National Register of Historic Places in 2007 as a significant example of regional farm development at the turn of the twentieth century. Until the 1950s, the farm specialized in seed production, growing rye grass and vetch for commercial distribution.