(Longleaf Oregon grape)
A 2-foot-high evergreen shrub native to the woods and woodland edges of the Pacific Northwest, mahonia gives a shady area three seasons of interest. Erect racemes covered with clear yellow flowers rise from the plant's leaf axils or from the main stem tip in spring. In contrast to these upright blooms are long, elegant, compound leaves made up of leaflets with spiny edges. In fall, some leaves turn a lovely wine-red. During summer, clusters of berries mature to dark blue with a powdery whitish coating.