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Scientific Name:

Common Name:

Rosa multiflora Thunb. ex Murr.
Multiflora rose
Family: Rosaceae

USDA Plant Code: ROMU

Habitat: Terrestrial; fields, rights-of-way, open forest

Growth Habit: Perennial Vine, Subshrub

Native Environment: Japan, Korea

AKA: Japanese rose

Introduction



Multiflora Rose Plant Showing Odd-Pinnate Leaves
Problems Caused
Multiflora rose or Japanese rose (Rosa multiflora Thunb. ex Murr.)[Syn. Rosa cathayensis (Rehd. & Wilson) Bailey] is a shrub native to Japan and Korea. It was introduced into cultivation in 1868 and escaped. It has been used for ‘living fences’ and wildlife habitat. It can be problematic in all Midsouth states, especially in pastures. The presence of prickles on stems and leaves are most likely a deterrent for grazing livestock. It is still used as a rootstock for certain cultivated roses and apparently resistant to certain diseases such as black spot. However, it is a host to some viral diseases which can be vectored to cultivated roses.

Regulations
It is Noxious in Alabama, Iowa, Kentucky, Missouri, Pennsylvania, and West Virginia. It is Banned in Connecticut and Prohibited in Massachusetts and New Hampshire. A permit is required in Indiana and it is Regulated as a non-native plant species in South Dakota and a Nuisance weed in Wisconsin.

Description


Vegetative Growth
Multiflora rose is an erect, arching, deciduous shrub. Stems and leaves have short, recurved prickles, except in the cultivar ‘Inermis’. Shrubs may reach 15 feet high by 15 feet wide, but are generally much smaller. Leaves are alternate and odd-pinnate with 7 to 9 leaflets. The stem (rachis) is Leaflets tend to be glabrous above and pubescent beneath. Each leaflet is obovate to elliptic and 0.5 to 2 inches long by 0.5 to just over 1 inch wide. Margins are generally serrate. Stipules pectinate; fused to petiole for about 0.1 to 0.6 inches then free about 0.1 to 0.3 inches.


Multiflora Rose in Bloom on a Roadside in Mississippi with Other Non-Native and Native Vegetation
Flowering
Flowers are clustered in a bracteate raceme-like corymb or panicle with bracts (leaflike structures) promptly deciduous. Flowering occurs in spring from May to June and then sparingly from September to October. There are five sepals which are glabrous to pubescent and lanceolate, 1.5 to 2.5 inches long. The five petals are typically white (pink in Rosa multiflora var. cathayensis and R. multiflora ‘Platyphylla’); 0.4 to 0.6 inches long. The hypanthium, sometimes called the ‘fruit’ or ‘hip’, at first green then maturing red; ellipsoid to ovoid in shape, 0.2 to 0.3 inches long. The hips occur in clusters. Inside the hips are approximately 7 achenes (true fruit which contain a seed) which are about 0.1 inches long and densely pubescent.

Dispersal
Individual plants may produce up to 500,000 seeds (or achenes) per year. Most seedlings will emerge near the parent plant. However, many species of birds and mammals feed on the hips, widely dispersing the seeds. Despite this dispersal mechanism, wildlife food value is considered low to minor. Stems that come into contact with the soil can root. The impact of its use as a rootstock for cultivated roses upon its spread in the United States is not clear. Its use for ornament, wildlife, and hedges has most likely lead to invasions in certain areas of the United States.

Spread By
Multiflora rose is spread primarily by birds, mammals, and humans.

Habitat


Multiflora rose is a problem in pastures, fence rows, prairies, forest and roadside margins, and open woodlands. It can form dense thickets, replacing the surrounding native vegetation. Although these thickets may provide habitat for certain wildlife, they are a difficult barrier for human activity.

Distribution


United States
Multiflora rose is widespread in the United States, but apparently not escaped in some western plains and Rocky Mountain states. Since it has been used as a rootstock for cultivated roses, it is possible that it has been planted in most, if not all, western states as rootstock. It occurs in states along the west coast and states from Minnesota to New Mexico east. In the right habitat it can be quite common in certain eastern states.

MidSouth
Multiflora rose has escaped in all MidSouth states.

IPAMS Surveys:

Control Methods


Chemical Methods of Control for Multiflora Rose
Herbicide Method Rate
Arsenal (imazapyr) Low volume/soil 2 to 6 pt/A
Low volume 1% solution
Banvel (dicamba) Soil treatment (dormant plants) 2.25 oz (6 to 8 in. of crown)
Foliar spray 4 pt/A
CimarronMax
(metsulfuron+dicamba+
2,4-D)
Low volume
(plants 3 ft tall)
0.5 oz part A + 1 qt part B/A
Escort/Cimarron
(metsulfuron)
Low volume 1 to 3 oz/A
Low volume 1 oz per 100 gal spray
Garlon/Remedy
(triclopyr)
Low volume 4 pints/A
Basal spray/cut stem 30% solution in oil
Grazon P+D/Tordon 101 (picloram+2,4-D) Foliar spray
(plants at least 3 ft tall)
1 gal/A
Low volume 2% solution
OneStep
(imazapyr+glyphosate)
Low volume 5 to 16 pints/A
Low volume 5 to 10% solution
Pasturegard
(triclopyr+fluroxypyr)
Low volume 2% solution
Basal spray/cut stem 50% solution with oil carrier
Surmount
(picloram +fluroxypyr)
Low volume 3 qt/A
Spot treatment 1.5% solution
Tordon (picloram) Low volume 2 qt/A
Velpar (hexazinone) Low volume broadcast 2 to 4 gal/A
Spot treatment 2-4 ml per 3 ft of canopy width
Weedmaster
(dicamba+2,4-D)
Low volume, foliar spray 2.5%+10% diesel fuel
Basal spray 2.5% + 15% diesel fuel
Biological
Although multiflora rose is susceptible to certain diseases, no widespread use of biological controls is practiced for its control.

Chemical
There are several chemical control options for multiflora rose. Most are low volume foliar applications, but basal spray, soil, or cut stem applications options are also available. All herbicide treatments should be applied when conditions are favorable for plant growth. For best results, roses should not be treated within 12 months before or after mowing or burning. Foliar treatments should be applied after leaves have fully expanded, but before new growth has completely hardened.

Mechanical
Roses are generally shallow rooted and can be mechanically uprooted. Precaution should be taken to avoid prickles during handling and mechanized equipment may be safer when working with large plants.

Physical
Multiflora rose tolerates a wide range of conditions, thus physical controls are generally not practiced.

References


Dirr, Michael A. 1998. Manual of woody landscape plants: Their identification, ornamental characteristics, culture, propagation, and uses, 5th ed. Stipes Publishing LLC., Champaign, IL.

Miller, James H. 2003. Nonnative invasive plants of southern forests: A field guide for identification and control. Southern Research Station, Asheville, NC.

USDA, NRCS. 2007. The PLANTS Database (http://plants.usda.gov, 6 August 2007). National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

More Information


The genus Rosa belongs to the Rose (Rosaceae) Family. A few rose species are native to the MidSouth, but some are introduced. Native rose species, like Rosa carolina L., are pink flowering. Most non-native, escaped roses are white flowering. Four of the more common non-native, escaped roses include Cherokee rose (Rosa laevigata Michx.), Macartney Rose (Rosa bracteata Wendland), memorial rose (Rosa wichuraiana Crepin), and multiflora rose. In flower or fruit, these roses are not difficult to distinguish. Cherokee and Macartney roses are white with flowers solitary (not clustered) and five petaled. Memorial and multiflora roses are both in clusters, but the memorial rose is pinkish and typically double petaled (many petals) while the typical multiflora rose is white and single petaled (five petals). However, some cultivated multiflora rose variants are similar to the memorial rose in flower. Rosa multiflora var. cathayensis Reyd. & Wils. is pink and cultivar ‘Platyphylla’ is double pink. Despite these floral similarities, they can be distinquished by form since multiflora rose is an upright, arching shrub and the memorial rose is trailing. Rosa multiflora ‘Inermis’ is thornless. These variants of multiflora rose are far less common than the typical escaped form. Forma watsoniana [Rosa multiflora Thunb. ex Murr. f. watsoniana (Crep.) Matsum] probably does not occur in the southeastern United States.

Contributing Authors


Dr. John D. Byrd, Jr., Plant and Soil Sciences, Mississippi State University
Dr. Randy Westbrooks, USGS, Biological Resources Discipline, Whiteville, NC.


Contact Info


Dr. Victor Maddox
Mississippi State University
Geosystems Research Institute
Box 9555
Mississippi State, MS 39762-9555
Ph. (662)325-2313
vmaddox@gri.msstate.edu

Geosystems Research Institute
Contact: John D. Madsen, Ph.D.  •  WebMaster