Multiflora rose is a Restricted Noxious Weed in Minnesota. Importation, transportation and sale of multiflora rose propagating parts is prohibited.
- Multiflora rose can develop into dense thickets if left unmanaged.
- It crowds out grasses, forbs and trees.
- It can become so thick that it hinders movement of cattle in pastures.
Multiflora roses should be reported. The Minnesota Department of Natural Resources provides detailed recommendations for reporting invasive species.
How to identify multiflora roses
- Multiflora rose (Rosa multiflora) is a multi-stem arching shrub with recurved thorns, grows 4 to 15 feet tall.
- Stems are green or reddish.
- Stem tips can take root when in contact with the ground.
- 6- to 13-foot arching canes.
- Alternate, toothed, pinnately compound leaves with 5 to 11 small leaflets on each leaf.
- The plant is characterized by a small fringed structure at the base of the leaf.
- Leaves can be 1 to 2 inches long.
- Flowering stalks produce clusters of white to pinkish 5-petaled flowers that are fragrant and 1 to 2 inches in diameter.
- Flowers bloom May to June.
Fruit and seeds
- Leathery rose hips appear in the summer and last throughout winter.
- They are small, balloon shaped and bright red.
- Each rose hip contains several seeds that may remain viable in the soil for up to 20 years.
Reviewed in 2019