King's Ransom Oregon Grape

Mahonia 'King's Ransom'

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King's Ransom Oregon Grape (Mahonia 'King's Ransom') at Westwood Gardens

King's Ransom Oregon Grape foliage

King's Ransom Oregon Grape foliage

(Photo courtesy of NetPS Plant Finder)

King's Ransom Oregon Grape (Mahonia 'King's Ransom') at Westwood Gardens

King's Ransom Oregon Grape flowers

King's Ransom Oregon Grape flowers

(Photo courtesy of NetPS Plant Finder)

Height:  5 feet

Spread:  3 feet

Sunlight:  full sun  partial shade  full shade 

Hardiness Zone:  5b

Other Names:  Oregon Grape Holly


A showy upright-mounded shrub with holly-shaped leaves turning bronze in winter; showy yellow flowers in spring and very attractive purple grape-like fruit in late summer; somewhat fussy, needs moist acid soils, some shade and protection from winter winds

Ornamental Features

King's Ransom Oregon Grape is primarily grown for its highly ornamental fruit. It features an abundance of magnificent blue berries from mid summer to early fall. It has attractive bluish-green evergreen foliage which emerges burgundy in spring. The spiny pinnately compound leaves are highly ornamental and turn an outstanding burgundy in the fall, which persists throughout the winter. It features showy racemes of fragrant yellow flowers hanging below the branches in early spring.

Landscape Attributes

King's Ransom Oregon Grape is a dense multi-stemmed evergreen shrub with a ground-hugging habit of growth. Its relatively fine texture sets it apart from other landscape plants with less refined foliage.

This shrub will require occasional maintenance and upkeep, and can be pruned at anytime. Deer don't particularly care for this plant and will usually leave it alone in favor of tastier treats. Gardeners should be aware of the following characteristic(s) that may warrant special consideration;

  • Suckering

King's Ransom Oregon Grape is recommended for the following landscape applications;

  • General Garden Use

Planting & Growing

King's Ransom Oregon Grape will grow to be about 5 feet tall at maturity, with a spread of 3 feet. It tends to fill out right to the ground and therefore doesn't necessarily require facer plants in front, and is suitable for planting under power lines. It grows at a slow rate, and under ideal conditions can be expected to live for approximately 30 years.

This shrub performs well in both full sun and full shade. It prefers to grow in average to moist conditions, and shouldn't be allowed to dry out. It may require supplemental watering during periods of drought or extended heat. It is not particular as to soil type, but has a definite preference for acidic soils, and is subject to chlorosis (yellowing) of the foliage in alkaline soils. It is somewhat tolerant of urban pollution, and will benefit from being planted in a relatively sheltered location. Consider applying a thick mulch around the root zone in winter to protect it in exposed locations or colder microclimates. This particular variety is an interspecific hybrid.

Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Flowers  Fruit  Foliage Color  Fall Color  Winter Value 
Ornamental Features