AppearanceRosa multiflora is a multistemmed, thorny, perennial shrub that grows up to 15 ft. (4.6 m) tall. The stems are green to red arching canes which are round in cross section and have stiff, curved thorns. Foliage Leaves are pinnately compound with 7-9 leaflets. Leaflets are oblong, 1-1.5 in. (2.5-3.8 cm) long and have serrated edges. The fringed petioles of Rosa multiflora usually distinguish it from most other rose species. Flowers Small, white to pinkish, 5-petaled flowers occur abundantly in clusters on the plant in the spring. Fruit Fruit are small, red rose hips that remain on the plant throughout the winter. Birds and other wildlife eat the fruit and disperse the seeds. Ecological ThreatRosa multiflora forms impenetrable thickets in pastures, fields, and forest edges. It restricts human, livestock, and wildlife movement and displaces native vegetation. It tolerates a wide range of conditions allowing it to invade habitats across the United States. Rosa multiflora is native to Asia and was first introduced to North America in 1866 as rootstock for ornamental roses. During the mid 1900s it was widely planted as a “living fence” for livestock control.

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James H. Miller, USDA Forest Service, Bugwood.org

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

James H. Miller, USDA Forest Service, Bugwood.org

James H. Miller, USDA Forest Service, Bugwood.org

James H. Miller & Ted Bodner, Southern Weed Science Society, Bugwood.org

Chris Evans, University of Illinois, Bugwood.org

Chris Evans, University of Illinois, Bugwood.org

James H. Miller, USDA Forest Service, Bugwood.org

Chris Evans, University of Illinois, Bugwood.org

James H. Miller, USDA Forest Service, Bugwood.org

James H. Miller, USDA Forest Service, Bugwood.org

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

Leslie J. Mehrhoff, University of Connecticut, Bugwood.org

Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org

Randy Westbrooks, Invasive Plant Control, Inc., Bugwood.org

Nancy Dagley, USDI National Park Service, Bugwood.org

Nancy Dagley, USDI National Park Service, Bugwood.org

Nancy Dagley, USDI National Park Service, Bugwood.org

Nancy Dagley, USDI National Park Service, Bugwood.org

Nancy Dagley, USDI National Park Service, Bugwood.org

Nancy Dagley, USDI National Park Service, Bugwood.org

Nancy Dagley, USDI National Park Service, Bugwood.org

Nancy Dagley, USDI National Park Service, Bugwood.org