Mahonia nervosa
Mahonia nervosa, commonly known as Cascade Oregon-grape, Longleaf Oregon-grape, or Dwarf Oregon-grape, is a species of flowering plant in the family Berberidaceae. It is native to the western regions of North America, from British Columbia to California.
Description[edit | edit source]
Mahonia nervosa is an evergreen shrub with pinnate leaves that are dark green on top and lighter underneath. The leaves are made up of 9-19 leaflets, each of which is spiny and holly-like. The plant typically grows to a height of 0.2-1 meter, with a dense, clumping habit.
The flowers of Mahonia nervosa are yellow, and bloom in early spring. They are arranged in racemes that are 3-8 cm long. The fruit is a small, dark blue berry with a bloom, and is edible but tart.
Distribution and habitat[edit | edit source]
Mahonia nervosa is found in the understory of coniferous forests, often forming a dominant ground cover in areas with well-drained, acidic soils. It is tolerant of shade and is often found in the understory of Douglas-fir forests in the Pacific Northwest.
Uses[edit | edit source]
The berries of Mahonia nervosa can be used to make jelly, and the roots have been used in traditional medicine by indigenous peoples of the Pacific Northwest. The plant is also used in landscaping for its attractive foliage and resistance to deer browsing.
Cultivation[edit | edit source]
Mahonia nervosa is a hardy plant that can tolerate a range of soil conditions, but prefers well-drained, acidic soil. It is drought-tolerant once established, and can be propagated by seed or by division in the fall.
See also[edit | edit source]
References[edit | edit source]
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Contributors: Prab R. Tumpati, MD