We went on an exploratory adventure to a new-to-us nursery in Oregon City, Echo Valley Natives. It was hidden in the forest at the edge of Oregon City (18883 S. Ferguson Road Oregon City, OR 97045). It was a really beautiful setting and their prices are excellent for being so close to Portland. (Most one gallon pots are $7; we were paying more than that for 4-inch pots at the other nurseries we've been to this spring.)
If it's a native, they probably carry it; they have an extensive selection. They were out of a stock of a couple of larger shrubs we were looking for, but the helpful employee, Renee, said they'd have them back in stock later this summer, which works fine for us because we'll be buying the bulk of the natives in time to do a fall planting.
They had the plants arranged in among the trees in their natural setting. We really enjoyed walking around this nursery.