It does not have a well defined shape and often forms scraggly clumps. Most commonly the plant is simply referred to as Oregon grape. Mahonia nervosa (Pursh) Nutt. var. Mahonia Nervosa Dull Oregon Grape. The berries are a great food source for birds and mammals during the summer and fall. is native to Oregon (hence the name) and other western states. Roof [102,103] NRCS PLANT CODE : MANE2 COMMON NAMES : Cascade barberry Cascades Oregon-grape Cascades mahonia dwarf Oregon-grape dull Oregon-grape longleaf mahonia TAXONOMY : The scientific name of Cascade barberry is GPP Award. Dull Oregon-grape is a small shrub that like its close relative - tall Oregon-grape - produces yellow flowers and blue berries. Oregon grape is an evergreen shrub/ground cover that is slow growing and only reaches about 2 feet (60 cm.) Cascade Oregon grape plant (Mahonia nervosa) goes by several names: longleaf mahonia, cascade mahonia, dwarf Oregon grape, cascade barberry, and dull Oregon grape. 2’-3’. The flowers are highly aromatic, and, like all Mahonias, the autumn display is spectacular, with burgundy, red, gold and bronze. Most effective planted enmass. Evergreen shrub. Morphology: Oregon Grape is an evergreen shrub which can grow to a height of 7’-10’ and up to 5’ wide. Birds (6) eat fruit, Butterfly adult, Butterfly larvae, Mason bees. Leaves, long (30-45 cm) clustered at stem tips, pinnately compound, 11-21 leaflets, each 2.5-9.5 cm long, bristle-toothed, glossy green, may show purple in winter. Both Oregon-grapes can also be found in different habitats, Dull Oregon-grape is more commonly found in more moist open or closed forests at lower and mid-level elevations. A guide to eco-friendly lawns and gardens in Metro Vancouver Dull Oregon Grape, Mahonia nervosa. Description Oregon Grape is the state flower of Oregon, best known for its production of blue-black berries which somewhat resemble clusters of grapes. This species has the same beautiful flowers and fruit as does Tall Oregon Grape but has longer leaves and reaches heights of only 2.' Foraging and Identifying Oregon Grape. Part sun/full shade. Dull Oregon-grape tends to spread lower, rarely over two feet, and can also be used as a ground cover in filtered shade. 2′ x 4′ Evergreen shrub/ground cover, slow growing, to 2 ft (60 cm), stoloniferous. It is sometimes called Oregon grape-holly, although it’s not a grape or a holly! The flowers are yellow and quite fragrant which attracts pollinators during the spring. The dull Oregon-grape is shorter and grows in a variety of forest conditions ranging from dry to fairly moist and at low to middle elevations in the southern coast region. It is in the barberry family and has spiny leaves similar to hollies. Oregon Grape (Mahonia spp.) dull Oregon-grape (Cascade barberry) Berberidaceae (Barberry family) Introduction to Vascular Plants mendocinesis J. 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