Mahonia: Winter-Blooming Evergreen Shrubs for Shade

Mahonia (family Berberidaceae) is a genus of ~70 evergreen shrubs native to Asia (Himalayas, China) and the Americas. Prized for fragrant yellow winter/early-spring flowers followed by blue-purple berries, they bring life to shaded gardens when little else blooms. Named for botanist Bernard McMahon (Lewis & Clark Expedition).

Top Cultivated Species

Mahonia aquifolium (Oregon Grape Holly)

• Widely grown in N. America. Holly-like leathery leaves; reddish-purple winter color.
• Antibiotic properties; root used for gallbladder, stomach, liver/kidney issues.
• Shade-loving; avoids hot, dry sites (anthocyanin protects from photoinhibition).

Mahonia fortunei (Chinese Mahonia)

• Introduced by Robert Fortune (1800s). 6–8 ft. Fern-like fronds (7–12 leaflets).
• Partial to full shade (north/east sides of buildings). Sandy-clay soil.
• Regular water first year; weekly after. Modern/Zen landscapes.

Mahonia japonica / M. bealei (Leatherleaf Mahonia)

• 8–10 ft tall, 6 ft wide. Stiff, spiny, pinnate leaves. Blue-green → gold → red-burgundy.
• Fragrant yellow flowers late winter; grape-like berry clusters.
• Drought-tolerant; pest/disease resistant. Don't overwater.

General Culture

• Light: Shade to part sun. Avoid scorching sun/wind.
• Soil: Moist, fertile, well-drained, slightly acidic.
• Fertilizer: Organic, once yearly.
• Pruning: Early spring before new growth. For shape only.
• Threats: Weeds (sedges, grasses), gray mold (keep dry), armored scale, fungal infections.
• Mulch: Highly beneficial.

Architectural foliage, winter flowers, bird-friendly berries—mahonia is a shade-garden star.