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botanical name:
Mahonia trifolia
Mahonia trifolia © Deeproot Plant Base
synonyms:  Mahonia eutriphylla
family:  Berberidaceae
characteristics: shrub, evergreen, scented/aromatic
height: 3.00m
width: 3.00m
growth rate: slow
growth habit: bushy
leaf colour: dark green
flower colour: yellow
fruit colour: black
stem/bark: brown
main season: Autumn
aspect: full sun, part shade
conditions: dry soil, moist soil, clay soil, sandy soil
preferred soil pH: any
minimum temp: -10°C
USDA zone: 8 to 10
description:
Dense, slow growing small to medium evergreen shrub. Pinnate leaves with 3 to 5 small, rigidly spiny, dark green leaflets which turn dark plum-purple in cold winters. Dense clusters of yellow flowers in spring followed by bloomy black berries.

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

other notes:
From Mexico, collected by E.K. Balls. Rare in cultivation.
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