Common Name: Multiflora Rose
Alternate Names: Japanese rose, seven-sisters rose, rambler rose, multiflowered rose
Scientific Name: Rosa multiflora Thunb.
Efforts must be made to prevent seed maturation and dispersal of plants into new areas. Additionally, no illegal transportation, propagation, or sale of these plants is allowed. Failure to comply may result in enforcement action by the county or local municipality. Minnesota Noxious Weed Law.
Multiflora rose, native to eastern Asia, is a highly invasive perennial shrub that can reach heights of 4- 15 feet. This species was introduced to North America as a rootstock for ornamental roses and also used for erosion control, living fence rows and wildlife habitat. Since its introduction, it has spread aggressively across most of the eastern half of the United States and has become a serious threat to the degradation of a variety of riparian, upland and forest habitats where it outcompetes native plant species.
Multiflora rose is typically found in forest understories and clearings, hedgerows, savannas, stream banks, wetland and bog edges, pastures, abandoned fields, urban woodlots, roadsides, and other disturbed habitats. This species is commonly found throughout the southeastern counties of the state and has continued to slowly spread northward into the Twin Cities metro area and beyond. Landowners and managers should be aware of this species and eradicate newly discovered populations to avoid spread into valuable forest lands and other sensitive habitats.
The primary means of spread are by seed dispersal and the rooting of arching stems. Rose hips will fall near the parent plant. Birds and small mammals will also consume them and spread seeds to new areas. Due to the spread of seeds via birds, multiflora rose is difficult to control and eradicate. Plant stems can also arch back to the ground and root, causing existing populations to spread outward in this manner, creating dense impenetrable thickets. View multiflora rose distribution in Minnesota.
Multiflora rose grows and spreads aggressively by producing high numbers of viable seeds that are consumed by birds or small mammals and distributed to new areas. It also has the ability to spread when arching stems (canes) touch the ground and root. The thorny, ridged stems tangle around one another and vine around smaller trees and shrubs to create impenetrable thickets that are extremely hard for humans and livestock to navigate through. Its vigorous growth and rapid spread outcompetes native vegetation and inhibits the development of native trees, shrubs, grasses, and forbs in forests, uplands, pastures, savannas, and forest clearings.
MDA Noxious Weed Program
County Ag Inspectors
Minnesota Department of Agriculture (MDA), 625 Robert Street N, St. Paul, MN 55155-2538, firstname.lastname@example.org