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botanical name:
Mahonia aquifolium
Mahonia aquifolium © Deeproot Plant Base
common name:  Oregon Grape, Blue Barberry
synonyms:  Berberis aquifolium
family:  Berberidaceae
characteristics: shrub, evergreen, ground-cover
height: 1.20m
width: 1.50m
growth rate: medium
growth habit: bushy
leaf colour: dark green
flower colour: yellow
fruit colour: blue
main season: All Year
medicinal symbol medicinal
aspect: full sun, part shade, shade
conditions: moist soil, clay soil, sandy soil
preferred soil pH: any
minimum temp: -25°C
USDA zone: 5 to 9
description:
Glossy green leaves turn purple in cold winter weather. Yellow flower clusters followed by the blue-black berries which give its common name. Very tough and good in shade.

cultivation:
Tolerant of a wide range of conditions but best in moist, well drained, moderately fertile, humus-rich soil in full or part shade.
If required, trim or cut back after flowering. Can be pruned hard to rejuvenate.

usage:
The roots have been used mediccinally to treat liver, gall-bladder and skin problems

other notes:
Native to western North America, from Alaska to California.
Official state flower of Oregon, USA.

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