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 Appearance:
Small, compact, spiny shrub, 3-6' tall with slightly curving branches.
Leaves:
Small, rounded, untoothed; arranged in clusters above single spines
that appear early in the spring. Flower:
Yellow, single or in clusters of 2-4 blossoms. Blooms in May. Fruit:
Bright red, egg-shaped small berries,
in clusters or single; mature in August and stay on the shrub through
winter. |
Japanese barberry invades oak woodlands and oak
savannas and prefers well-drained soils.Once established, its prolific
spreading shades out native plants. It regenerates from seed dispersed
primarily by birds and vegetatively through horizontal lower branches
that root freely, sending up new sprouts. Japanese barberry was introduced
to North America as an ornamental and for wildlife and erosion control. |
 Wisconsin
Manual of Control Recommendations for Ecologically Invasive Species,
1997. |
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