Oregon Grape , scientifically known as Mahonia aquifolium , is a member of the Berberidaceae kinsperson , within the genus Mahonia . This genus was once lumped with Berberis ( barberry ) but is now recognized as decided , especially due to its unique leafage structure and growth habit . Mahonia aquifolium is further separate under the section Mahonia , which includes species with pinnate leaves . The species name “ aquifolium ” is come from Latin , meaning “ with leaf like holly , ” referring to the spiny , holly - like leaves of the plant .

Native to westerly North America , Mahonia aquifolium naturally occur from British Columbia in Canada , through Washington , Oregon , and Idaho , extending into California and constituent of Montana . It thrives in a variety of habitat , from lowland forests and shaded timberland edges to higher lift clearings , often growing under the canopy of coniferous trees . This adaptability allows it to be found in both moist and siccative status , though it choose well - drained , acidulous to inert soils . Its range showcases its ability to colonize from sea level up to about 2,000 meters ( 6,560 feet ) in elevation , demonstrating its versatility in different microclimates within its native area .

Historically , Oregon Grape has been significant both culturally and medicinally . autochthonal people of the Pacific Northwest used it for various purposes ; the roots were used for dye , the bark for flagellation leather , and the berry , although sour , were sometimes run through or used to make jelly . The plant ’s medicative properties were recognize for treating skin conditions , infection , and as a tonic due to the presence of berberine , an alkaloid known for its antibacterial and anti - seditious effects . With European settlement , the plant make recognition for its cosmetic qualities , particularly its vibrant yellow blossom and blue - black berry , leading to its widespread culture in gardens . Oregon Grape became the state flower of Oregon in 1899 , highlighting its grandness to the area ’s identity .

In terms of USDA Hardiness Zones , Mahonia aquifolium is stalwart in zones 5 through 9 . This liberal range reflects its tolerance for both cold wintertime and warmer weather condition , make it suitable for a broad raiment of North American climates . It prefers fond shadowiness , mimic its innate growth under woodland canopies , but can adapt to full sun if watered sufficiently . The flora does well in grunge with expert drainage , from sandy to loamy , with a preference for slightly acidic conditions . Its power to turn in wraith , combined with its evergreen nature , makes it an excellent pick for landscaping in areas where other plant might struggle due to down light or poor dirt weather condition .

Oregon Grape (Mahonia aquifolium): Characteristics

Plant Structure

leafage

heyday

yield

Reproductive Features

emergence and Adaptation

Ecological Role

challenge

Commercial and Cultural Use

Oregon Grape (Mahonia aquifolium): Cultivation

Site Selection

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Watering

Fertilization

Pruning

Pest and Disease Management

Propagation

Special Considerations