Oregon Grape (Mahonia aquifolium) is a tough suckering shrub from North America often seen blanketing beds in parks and other municipal plantings. It has the virtue of growing strongly in just about any soil or aspect including shade. 

 For that reason it has been used without much imagination. Its natural habitat is in the understory of the forests of the Pacific Northwest and is best utilised in a mixed woodland planting. Blue berries follow the yellow flowers. Foragers and forest gardeners note the berries can be used to make jams and jellies.