As the name indicates, Oregon grape is indigenous to the northwestern portion of the United States, particularly Oregon. This low-growing but bushy shrub is easily recognized in its native habitat because of its evergreen, holly-like leaves, an attribute that led to the nickname hollyleaved barberry. It also produces clusters of fruits that look similar to blueberries in shape, size and color. The plant is harvested for its root, however, which contains a plant alkaloid called berberine. Although the herb is too bitter to enjoy as tea, it is suitable for tincturing. Powdered Oregon grape root is usually encapsulated as a supplement.
description Mahonia aquifolium is a species of flowering plant in the family Berberidaceae and it grows to 1–2 m (3 ft 3 in–6 ft 7 in) tall by 1.5 m (5 ft) wide, with pinnate leaves up to 30 cm (12 in) long, each leaf made up of spiny leaflets. The leathery leaves resemble holly and the stems and twigs have a thickened, corky appearance. The flowers, borne in dense clusters in late spring, are yellow, and are followed by spherical dark dusty blue berries.
common names & nomenclature The name aquifolium means "holly-leaved", in reference to the spiny foliage. The plant's berries resemble grapes, but are not true grapes, thus the common name Oregon grape.
Also known as: oregon-grape, oregon grape, oregon grape holly
Mahonia aquifolium is a native plant in the North American West from Southeast Alaska to Northern California, and eastern Alberta to southern Colorado.
climate Mahonia aquifolium often occur in the shady understory of Douglas-fir forests (although other forest types contain the species) and in brush lands in the Cascades, Rockies, and northern Sierras.
soil This plant tolerates poor soils and can adapt to a wide range of soil conditions.
growing Sow the ripe seed in the spring in a cold frame. Plant the seedlings into pots for their first winter, plant into the garden the next spring or summer.
harvesting The roots are harvested in late autumn or early spring and dried for later use as either cut pieces or powder.
preserving Store dried root pieces or powder in an airtight container in a cool, dry place.
This information has not been evaluated by the Food and Drug Administration. This information is not intended to diagnose, treat, cure, or prevent any disease.
