Oregon Grape
Image: lokechin (cc-by-nc)
NameOregon Grape
Scientific NameMahonia aquifolium
Common NamesOregon Grape, Holly-leaved Barberry, Mountain Grape
Plant FamilyBerberidaceae
Natural HabitatNative to the understory of coniferous and mixed forests, open woodlands, and clearings, often found on dry, rocky slopes across western North America.
Parts Usedroot,bark,fruit
Medicinal Actionsantimicrobial,anti-inflammatory,antioxidant,astringent
Traditional UsesTraditionally used by Native American tribes for various ailments, including skin conditions like eczema and psoriasis, and to support digestive and liver function. The root and bark are valued for their bitter properties, while the berries are edible and rich in Vitamin C.
Active ConstituentsBerberine, hydrastine, oxyacanthine, palmatine
Preparation Methodsdecoction,tincture,powder,salve
Contraindications & WarningsNot recommended for pregnant or breastfeeding women due to berberine content. May interact with certain medications, including blood thinners and drugs metabolized by the liver. High doses can cause nausea or vomiting.
Cultivation NotesPrefers partial shade to full sun and well-drained soil. Drought-tolerant once established, making it a low-maintenance plant suitable for ornamental use or as a hedge.
Raritycommon
Description
An evergreen shrub native to western North America, characterized by spiny, holly-like leaves that often turn reddish in winter. It produces clusters of bright yellow flowers in spring, followed by dark blue-purple berries.
