Scientific Name: Berberis aquifolium ( syn. Mahonia aquifolium )
Common Name: Oregon grape
Family Name: Berberidaceae
Origin: B.C. west of Cascades, U.S. - northwest
Hardiness Zone: Zone 5: (-29 to -23 °C)
Plant Type: Broadleaf evergreen
Mature Size: 1.3 - 2.0m x 1.0 - 1.5m (height x width)
Habit: Stiffly upright
Form: Oval - vertical
Texture: Medium
Landscape Uses: Attract beneficial insects, Attract birds, Mixed shrub border, Security/barrier, Wildlife food, Winter interest, Woodland margin
Exposure: Full sun only if soil kept moist, Part sun/part shade
Soil or Media: Acidic
Leaves: Compound, Alternate, Leathery, Prickly, Glabrous, Lustrous, Odd-pinnate, Ovate, Dentate, Spinose, Undulate (wavy)
Flowers: Raceme, Yellow, Apr-May
Fruit: Berry (true), Edible, Blue, Violet, Black, Sep-Oct
Key ID Features:
Native evergreen shrub; leaves alternate, most 15-25cm long x 10-15cm wide, pinnately compound with (5-)7(-9) sessile leaflets (reminiscent of holly leaves), most 6-9cm long x 3-4cm wide, margin spinose, dark green, glossy; racemes of showy yellow florets 8-12mm wide; berries in grape-like clusters, blue-violet, , glaucous, ovoid-round, 6-9mm wide.