Creeping Mahonia

Creeping mahonia (Berberis repens, Berberidaceae) is a broadleaf evergreen subshrub native to western North America, typically just 2 to 20 centimeters tall though occasionally reaching 60 centimeters. Despite its short stature, roots can extend 3 meters deep. Compound leaves have spiny, holly-like leaflets. Lightly fragrant yellow flower clusters appear in early spring, followed by dark, sour-tasting berries attractive to birds. The plant spreads via shallow rhizomes 1.5 to 5 centimeters below the soil surface.

Creeping mahonia grows in full sun to partial shade on moist, well-drained, acidic soil and becomes drought tolerant once established. It tolerates renovation pruning and is fire-adapted, resprouting after disturbance. Documented diseases include leaf spot, rust, leaf scorch, and powdery mildew; lecanium scale is the primary pest of record. Three cultivars are documented in the trade. Its prostrate habit suits groundcover plantings and erosion control.