Common Name: Morrow’s Honeysuckle
Scientific Name: Lonicera morrowii A. Gray
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.
Morrow’s honeysuckle is native to Japan, Korea, and Northeast China. It was introduced to the U.S. in the 1800s as an ornamental, for wildlife food and cover, and for erosion control. It has since spread and naturalized in the Eastern and Midwest United States. It is established in many of the counties of Minnesota.
Morrow’s honeysuckle invades and thrives in woodlands, roadsides, mature and disturbed forests, savannas, fence rows, meadows, old fields, and pastures. It can grow in full sun to shade, and moist to dry, gravelly, or sandy soils.
Morrow’s honeysuckle reproduces asexually by root suckering and layering. The main method of spread to new sites is through seed dispersal by birds. Morrow’s honeysuckle produces abundant seeds which are vectored by birds and mammals.
It has been found in many counties in Minnesota, especially in the southeast and central parts of the state. View Morrow’s honeysuckle distribution in Minnesota.
High densities of honeysuckles can suppress native plant and timber regeneration and form monocultures. Ecosystem richness and density of tree seedlings are substantially reduced in honeysuckle infestations. This species can alter a habitat’s microclimate, by creating dense shade, depleting soil moisture and nutrients, and possibly releasing allelopathic chemicals that inhibit growth of other plants. It can be especially harmful to spring ephemerals, due to its early leafing.