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Family: berberidaceae
Common name(s): tall Oregon-grape
Hardiness ratings: USDA zone 5~6 - 9~10 
General resources
Links for Mahonia aquifolium
- Arthur Lee Jacobson - Seattle plantsman describes botanical and/or horticultural aspects of this species.
 (4 photos)
- BBC Gardening: Mahonia aquifolium 'Apollo' - Plant profile with horticultural details and garden uses. (1 photo)
- Dave's Garden PlantFiles - Profile page with horticultural basics, and member-contributed photos and comments. (zone 5-9) (15 photos)
- Garden.org - Community-assembled plant profile (2 varieties in database) (10 photos)
- Lady Bird Johnson Wildflower Center - Plant description and characteristics with notes on distribution, culture, and propagation. (24 photos)
- Las Pilitas Nursery - Catalog page about this California native, with description and horticultural basics. (additional pages for other varieties in catalog) (zone 5-10) (4 photos)
- Missouri Plants - Description and photographs of botanical features, with notes about habitat and native status. (4 photos)
- Ontario Rock Garden Society - Germination information
- Paghat's Garden - Illustrated articles by a gardener in the Pacific Northwest, with background and personal observations.
- Rainy Side Gardeners - Plant profile compiled by two gardeners in the Pacific Northwest. Includes propagation and pruning methods, and commentary. (zone 6-9) (2 photos)
- Turner Photographics - Profile of wildflower of the US Pacific Northwest, with botanical description, habitat and distribution, and photo gallery.
- Virginia Tech Dendrology - Factsheet with botanical characteristics and photos of various features. (6 photos)
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