barberry, mahonia, Oregon-grape
4 species
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Berberis darwiniidarwin's barberry
Distribution: Occasional near the coast in Oregon and California.
Habitat: Prefers high humidity; rarely escapes cultivation
Origin: Introduced
Growth Duration: Perennial
Berberis julianaewintergreen barberry
Distribution: Occurring in lowlands west of Cascades crest in Washington; also in Mississippi and New York.
Habitat: Disturbed, shrubby areas at low elevations, often where wet or marshy.
Origin: Introduced
Flowers: May-June
Growth Duration: Perennial
Berberis thunbergiiJapanese barberry
Distribution: Sparingly introduced in Washington; escaped throughout central and eastern United States and Canada.
Habitat: Disturbed areas
Origin: Introduced
Flowers: April-May
Growth Duration: Perennial
Berberis vulgariscommon barberry, European barberry
Distribution: Occurring east of the Cascades crest in Washington; British Columbia to Washington, east to Idaho and Montana; also occurring in central and northeastern North America.
Habitat: Dry waste ground, forest understory, and other disturbed sites.
Origin: Introduced from Europe
Flowers: April-June
Growth Duration: Perennial