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Oregon Grape Holly
Tall Oregon Grape
Oregon State Flower; evergreen shrub with conspicuous yellow flowers in the spring and edible blue black berries in late summer.
Min. USDA Hardiness Zone:
Moist, organically rich, acidic, well drained
Med - Lg Shrub (usually >3' and never < 1.5')
The genus Mahonia has now been included in the genus Berberis, hence the accepted name for Oregon Grape is Berberis aquifolium. However, in commercial horticulture these plants are still known as Mahonia. It is native to coniferous forests in Pacific Nor
Western state native:
Leaves alternate, compound pinnate (7-9 leaflets), 15-30 cm long, extremely stiff and leathery, spine-tipped along margin which is wavy having distinct troughs between spines, lustrous dark green above.
Predominant flower color:
Showy, fragrant bright yellow flowers bloom in terminal racemes
Fall Color Description:
Leaves may turn bronze to bright red-purple in winter, especially the latter if in cold areas in full sun.
Winter Interest Description:
Evergreen leaves, showy blue berries
2' to 5'
Deep, conifer forests; open, rocky woods
Used by Wildlife:
Birds eat the berries
Harvest berries in early fall
Long Term Care:
Unless naturalizing remove suckers when they appear
Aphids, scale, whiteflies, loopers
Leaf spots and rusts may occur.
Improperly sited plants may suffer from leaf scorch.
Site in locations protected from exposure to strong winds and full sun
OSU Landscape Profile:
LBJ Native Plant Database:
Missouri Botanical Garden Database:
Alternate Source 1:
Alternate Source 2:
George & Vickie Minor
Whistle Stop Farm & Flowers
High Desert Farms Nursery Sales
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VIsit the countryside of the Emerald Isle & Journey through Scotland and England
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Put your name in the lottery to get a plot at either Hollinshead's or Discovery Park's community garden.
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