Oregon Grape
Image: lokechin (cc-by-nc)
NameOregon Grape
Scientific NameMahonia aquifolium
Common NamesOregon Grape, Holly-leaved Barberry, Mountain Grape
Plant FamilyBerberidaceae
Natural HabitatFound in woodlands, forest edges, and clearings, preferring moist, well-drained soils in partial shade to full sun. It is common in the understory of coniferous forests across its native range.
Parts Usedroot,bark
Medicinal Actionsantimicrobial,anti-inflammatory,antioxidant,astringent
Traditional UsesTraditionally used by Native American tribes for various ailments, including liver and gallbladder issues, skin conditions like psoriasis and eczema, and as a general tonic. It is valued for its bitter properties to stimulate digestion and liver function, and for its antiseptic qualities.
Active ConstituentsBerberine, Oxyacanthine, Hydrastine
Preparation Methodsdecoction,tincture,powder
Contraindications & WarningsShould not be used during pregnancy due to potential uterine stimulant effects. May interact with certain medications, particularly those metabolized by the liver (e.g., cyclosporine, warfarin) due to berberine's enzyme inhibition. Consult a healthcare professional before use.
Cultivation NotesPrefers well-drained, acidic to neutral soil and partial shade, though it can tolerate full sun in cooler climates. Drought-tolerant once established, it is a relatively low-maintenance plant. Propagated by seed, cuttings, or division.
Raritycommon
Description
An evergreen shrub native to western North America, characterized by spiny, holly-like leaves and clusters of bright yellow flowers that mature into dark blue-purple berries. It typically grows 3-10 feet tall, providing year-round foliage.
