- Name: Oregon Grape - Other Common Names: Hollyleaved Barberry / Oregon Grape Holly - Scientific Name: Mahonia Aquifolium Syn. Berberis Aquifolium - Color: Yellow Flowers / Dark Blue Fruit - Plant Seeds: Fall Sow Seeds Or Cold Stratify - Bloom Time: Flowers March - May - Harvest: Berries Late Summer - Early Winter - Hardiness Zone: 5 - 9 - Plant Height: 4 - 8' - Plant Spacing: 4 - 6' - Light Requirements: Sun - Part Shade - Shade - Soil & Water Preferences: Average - Quantity: 20 Seeds - Other: Oregon Grape Holly Is An Evergreen Shrub Native To The Western Us & Canada. It Is The State Flower Of Oregon. They Are Very Ornamental & Provide A Huge Benefit To Wildlife. The Plants Are Drought Resistant, Deer & Rabbit Resistant, & Will Tolerate Poor Or Rocky Soil.