The state flower of Oregon, many will know Oregon grape by its former genus name, Mahonia. It provides yellow blooms, a holly-like evergreen cover, and fall color. It's pretty blue fruit is valuable for wildlife and a variety of human uses including jellies, wine, and dye. This evergreen shrub has adaptable light and drought tolerance but prefers partial shade and acidic, low-nutrient, well-drained soil.
Source: Wildflowers of the Pacific Northwest
Additional Resource: Oregon Flora Project